CN202255269U - Digital readout displacement demarcation device for soil test - Google Patents
Digital readout displacement demarcation device for soil test Download PDFInfo
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- CN202255269U CN202255269U CN201120355876XU CN201120355876U CN202255269U CN 202255269 U CN202255269 U CN 202255269U CN 201120355876X U CN201120355876X U CN 201120355876XU CN 201120355876 U CN201120355876 U CN 201120355876U CN 202255269 U CN202255269 U CN 202255269U
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- displacement
- displacement transducer
- mount pad
- digital display
- calibration device
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Abstract
The utility model relates to a digital readout displacement demarcation device for a soil test, which comprises an electrical digital readout micrometer head and a connecting plate. The end of the connecting plate is joined with a lower support plate of an installation base of a displacement sensor, front clamping plates and back clamping plates which enable the lower support plate and the connecting plate to be fixedly connected are arranged on front faces and back faces of the lower support plates and the connecting plates, a displacement sensor shaft sleeve installation hole homocentric with a micrometric screw and a manual fastening bolt connected with a displacement sensor shaft sleeve are arranged on the installation base, and a support frame is fixed on the back clamping plate. By comparing read number of the digital readout displacement demarcation device with those displayed in a data acquisition processing system cathode ray tube (CRT) in the displacement sensor of an online application, users can visually see measurement errors of the displacement sensor, and the digital readout displacement demarcation device has the protruding advantages of small volume, light weight, easiness in installation, convenience in operation and visual display. Compared with a method of adopting standard blocks to detect demarcation, operation process is simplified, consumed time is greatly reduced and harmful effects caused by structural errors and anthropic factors are avoided.
Description
Technical field
The utility model relates to earthwork test Instrument, and the digital display displacement calibration device is used in particularly a kind of soil test that displacement transducer is detected demarcation.
Background technology
What use was maximum in soil test is the displacement measurement device; In the Earthwork Experiment Data acquisition processing system of especially current popularization and application; Almost each mechanical test passage all is furnished with a displacement transducer; So the displacement transducer that each testing laboratory has is all more than hundreds of; How to guarantee normal operation, the test result true and accurate of numerous displacement measurement passages, not only need to be grasped the correct method of application of soil test system, but also should grasp to the differentiation of displacement measurement passage running status with to the test calibration of displacement transducer.
Therefore, it is practical to develop a kind of science, is easy to grasp, and the displacement measurement calibration facility of simple operation is an important content guaranteeing that the true(-)running of numerous displacement measurement passage is indispensable.
It is current that to use maximum displacement transducers in soil test circle be to be carrier with mechanical scale formula dial gauge; Under the situation of not destroying original structure; Portion's increase specialized electronic components and original dial gauge test guide rod interrelate within it; The mechanical shift variation is converted into electric signal output, and the special collector of warp carries out passage control and signal modulation, can be divided into following two kinds according to the different modes of exporting signal:
(1) the frequency type displacement transducer of transforming with dial gauge is at traditional mechanical scale formula dial gauge mounted inside dedicated frequency generator.When dial gauge is measured guide rod generation mechanical shift; Its output frequency will change with the mechanical shift of measuring guide rod; The particular curve relation that both are proportionate; It is counted and microcomputer is imported in signal modulation back through special collector, carry out acquisition process according to the soil test disparity items.
(2) the resistive film chip displacement transducer of transforming with dial gauge; At the inner special resistors diaphragm of installing of traditional mechanical scale formula dial gauge; Fixed voltage is supplied with at two ends; Measure resistance diaphragm sliding end on the guide rod and with the change in displacement of measuring guide rod the resistance that (descend) end on its sliding end and the resistance diaphragm is changed to make (to descend) on sliding end and the resistance diaphragm the anti-living thereupon change of voltage between holding when being positioned at dial gauge; And with this as the detection signal output voltage, carry out passage control through special collector and import microcomputer with A/D conversion back, carry out data processing according to the soil test project.
Though above-mentioned percentage tabular form sensor has also kept all characteristics of dial gauge; But, inserting of electronic component become the displacement transducer of dial gauge formula because being arranged; When detecting change in displacement with dial gauge, will be converted into electric quantity change because of the displacement physical quantity changes, its output will be electric signal as displacement transducer output; The electric property of each displacement transducer all has difference; And must link with special collector, insert the Earthwork Experiment Data acquisition processing system stationary conduit corresponding with each displacement transducer, after specific software is handled, could carry out correspondence with displacement to be detected and demarcate; And write down its calibration coefficient, could confirm the correlation parameter of each passage.This shows that as the special-purpose displacement transducer of soil test having only matches with the collector of special use and pilot system software and hardware carries out online online demarcation and just be of practical significance.
Some unit is furnished with standard gauge block at present; And use standard gauge block that numerous displacement measurement passages is detected demarcation; Owing to have the gauge block of a plurality of different sizes to make up the detection demarcation needs that stack could be satisfied the different displaced segments of each passage to be detected in displacement transducer range ability domestic demand; Therefore; Each sensor will be divided into ten equal portions at least and demarcates step by step in range ability generally speaking, and carries out ascendingly, and the accuracy that descending again at least one survey time could be accomplished a displacement transducer detects with repeatability.Gauge block quantity is many in addition, and volume is little, and complex operation repeats and influenced by operating personnel's human factor bigger, time-consuming taking a lot of work, and the detection that is applied to hundreds and thousands of displacement passages of Earthwork Experiment Data automated system is demarcated and is had practical difficulty.
There is minority unit that soil test is taken off to concentrate from the grid line of soil test automated system with displacement transducer and delivers local metrological service; Measure evaluation by the dial gauge technical requirement; Owing to be that off-line carries out that mechanical scale accuracy detects and the influence of not considering its electrical parameter, thus off-line to carry out the electrical measurement displacement transducer that mechanical scale accuracy detects for the soil test system be nonsensical.Can find out; Only being fixed in corresponding pilot passageway at each displacement transducer matches with special-purpose collector and microcomputer software and hardware and carries out online online its electrical equipment electrical measurement performance parameter of detection demarcation and just be stored as special-purpose coefficient; Later each collection electromotive signal is carried out computing; Could guarantee that respective channel detects the true and accurate of data, and each trickle electrical parameter variation of each passage measured displacements all will concern this passage test findings accurately and reliably.
Summary of the invention
The utility model is to demarcate and the displacement transducer off-line is carried out mechanical scale accuracy detect the above-mentioned technical matters that exists in order to solve current with standard gauge block numerous displacement measurement passages the detection in soil test circle, and provides a kind of soil test to use the digital display displacement calibration device.
The utility model is taked following technical scheme for realizing above-mentioned purpose: this geotechnique test comprises the electronic digital display micrometer head with the digital display displacement calibration device and is arranged at display screen and with respect to the web joint of micrometric screw one side; Characteristic is; The end of web joint is connected with the mount pad lower carrier plate of displacement transducer mutually; Lower carrier plate is provided with the forward and backward clamping plate that make it to be fixedly connected with the two sides, front and back of web joint; Said mount pad is provided with and concentric displacement transducer axle sleeve mounting hole of micrometric screw and the manual tightening double-screw bolt that is engaged in the displacement transducer axle sleeve, and said rear plate is fixed with bracing frame.
The utility model can also be taked following technical measures:
Its manual tightening double-screw bolt of the mount pad of said displacement transducer is arranged at the mount pad top, and the mount pad top is interval with two screws that screw in manual tightening double-screw bolt along the axis direction of displacement transducer axle sleeve mounting hole.
Its axial length of the mount pad of said displacement transducer is less than the displacement transducer sleeve length, the displacement transducer axle sleeve mounting hole of mount pad and displacement transducer axle sleeve sliding fit.
Support frame as described above is matrix with the angle block of right angle, is provided with bending section backward in its vertical edges, this backward bending section be fixed in the rear plate surface.
Said is the base that its horizontal sides of bracing frame of matrix is fixed in the band leg with the angle block of right angle, and base support has guard shield, and base is connected with the guard shield seam.
The beneficial effect and the advantage of the utility model are: the micrometric screw axial internal clearance that this digital display displacement calibrating device has made full use of the electronic digital display micrometer head can intuitively show reading and the characteristics that have the installation position; Displacement transducer in the online application is installed on the mount pad of this calibration device; The displacement transducer gauge head is contacted with the micrometric screw of this calibration device; The micrometric screw cover that rotates this calibration device makes the CRT of Earthwork Experiment Data acquisition processing system show that reading approaches after 0; With data acquisition processing system CRT and this calibration device reading clear 0; This calibration device is put in order the figure place detection one by one according to the Along ent Bit Shift value in the displacement transducer range ability to be detected subsequently, and contrasts the difference of this calibration device displayed value and data acquisition processing system CRT actual measurement reading, and both differ and answer≤permissible error; Each point potential difference value is all within allowed band; It is qualified to confirm that this passage detects, and satisfies testing requirements, if both differ＞should overhaul or the change bit displacement sensor during permissible error.This calibration device is mainly used in the on-line testing of Earthwork Experiment Data acquisition system displacement transducer and demarcates, and also can be used for other displacement measurement device and carry out off line detection demarcation.The utlity model has volume little, in light weight, be easy to install, be convenient to operation, intuitive display; Compare with the method that adopts standard gauge block to detect demarcation; Operating process is greatly simplified, and expends time in greatly to reduce and avoid structural failure and human factor to produce dysgenic outstanding advantage.
Description of drawings
Accompanying drawing 2 is that Figure 1A is to view.
Accompanying drawing 3 is Fig. 1 embodiment user mode synoptic diagram.
Mark among the figure: 1 electronic digital display micrometer head, 1-1 micrometric screw, 1-2 web joint, 1-3 display screen, 2 displacement transducer mount pads; The 2-1 lower carrier plate, 2-2 mounting hole, the manual tightening double-screw bolt of 2-3,2-4 screw; 3 front plates, 4 rear plates, 5 bracing frames, 5-1 is bending section backward; 6 bases, 7 guard shields, 8 displacement transducers, 8-1 axle sleeve.
Embodiment
Further specify the utility model below in conjunction with embodiment and accompanying drawing thereof.
Test with digital display displacement calibration device embodiment like Fig. 1,2, this geotechnique shown in 3, comprise electronic digital display micrometer head 1 and be arranged at display screen 1-3 and with respect to the web joint 1-2 of micrometric screw 1-1 one side.
The end of web joint 1-2 is connected with the mount pad of displacement transducer 2 lower carrier plate 2-1 mutually, and lower carrier plate 2-1 is provided with the front plate 3 and rear plate 4 that makes it to be fixedly connected with the two sides, front and back of web joint 1-2, and rear plate is fixed with bracing frame 5.
The mount pad 2 of embodiment is provided with and the mounting hole 2-2 of the concentric displacement transducer 8 axle sleeve 8-1 of micrometric screw 1-1 and the manual tightening double-screw bolt 2-3 that is arranged at the mount pad top that is engaged in the displacement transducer axle sleeve.The mount pad top is interval with two screw 2-4 that screw in manual tightening double-screw bolt along the axis direction of displacement transducer axle sleeve mounting hole 2-2, so that adapt to the different length of displacement transducer axle sleeve.In addition, mount pad 2 its axial lengths of displacement sensor should be less than the displacement transducer sleeve length, the axle sleeve 8-1 sliding fit of the mounting hole 2-2 of mount pad 2 and displacement transducer 8.
Rear plate as shown in Figure 24 fixes with the bracing frame 5 that this geotechnique tests with the digital display displacement calibration device, and bracing frame 5 is a matrix with the angle block of right angle, is provided with bending section 5-1 backward in its vertical edges, this backward bending section be fixed in rear plate 4 surfaces.Bracing frame 5 is the setting of bending section 5-1 backward, is convenient to observe the reading of electronic digital display micrometer head 1 display screen 1-3.
Like Fig. 1, shown in 2, with the angle block of right angle base 6 that bracing frame 5 its horizontal sides of matrix are fixed in the band leg, base 6 is supported with this geotechnique and tests the guard shield 7 with the digital display displacement calibration device, and base is connected by seam with guard shield.
Claims (5)
1. the digital display displacement calibration device is used in a soil test; Comprise the electronic digital display micrometer head and be arranged at display screen and with respect to the web joint of micrometric screw one side; It is characterized in that: the end of web joint is connected with the mount pad lower carrier plate of displacement transducer mutually; Lower carrier plate is provided with the forward and backward clamping plate that make it to be fixedly connected with the two sides, front and back of web joint; Said mount pad is provided with and concentric displacement transducer axle sleeve mounting hole of micrometric screw and the manual tightening double-screw bolt that is engaged in the displacement transducer axle sleeve, and said rear plate is fixed with bracing frame.
2. digital display displacement calibration device according to claim 1; It is characterized in that: its manual tightening double-screw bolt of the mount pad of said displacement transducer is arranged at the mount pad top, and the mount pad top is interval with two screws that screw in manual tightening double-screw bolt along the axis direction of displacement transducer axle sleeve mounting hole.
3. digital display displacement calibration device according to claim 1 is characterized in that: its axial length of the mount pad of said displacement transducer is less than the displacement transducer sleeve length, the displacement transducer axle sleeve mounting hole of mount pad and displacement transducer axle sleeve sliding fit.
4. digital display displacement calibration device according to claim 1 is characterized in that: support frame as described above is matrix with the angle block of right angle, is provided with bending section backward in its vertical edges, this backward bending section be fixed in the rear plate surface.
5. digital display displacement calibration device according to claim 1 is characterized in that: said is the base that its horizontal sides of bracing frame of matrix is fixed in the band leg with the angle block of right angle, and base support has guard shield, and base is connected with the guard shield seam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120355876XU CN202255269U (en) | 2011-09-22 | 2011-09-22 | Digital readout displacement demarcation device for soil test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120355876XU CN202255269U (en) | 2011-09-22 | 2011-09-22 | Digital readout displacement demarcation device for soil test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202255269U true CN202255269U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120355876XU Expired - Lifetime CN202255269U (en) | 2011-09-22 | 2011-09-22 | Digital readout displacement demarcation device for soil test |
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| Country | Link |
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| CN (1) | CN202255269U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314889A (en) * | 2017-08-07 | 2017-11-03 | 中山依瓦塔光学有限公司 | Become the display precise parallel light tube as simulated range |
| CN110132206A (en) * | 2018-02-09 | 2019-08-16 | 厦门精量校准检测技术有限公司 | Radian table prover |
-
2011
- 2011-09-22 CN CN201120355876XU patent/CN202255269U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314889A (en) * | 2017-08-07 | 2017-11-03 | 中山依瓦塔光学有限公司 | Become the display precise parallel light tube as simulated range |
| CN110132206A (en) * | 2018-02-09 | 2019-08-16 | 厦门精量校准检测技术有限公司 | Radian table prover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 300251 No. 10 Minjiang Road, Minquan gate, Tianjin, Hebei District Patentee after: China Railway Design Group Limited Address before: 300251 No. 10 Minjiang Road, Minquan gate, Tianjin, Hebei District Patentee before: China Railway Third Survey and Design Institute Group Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |