CN108151610A - A kind of relative displacement measuring method in the confined space - Google Patents
A kind of relative displacement measuring method in the confined space Download PDFInfo
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- CN108151610A CN108151610A CN201711263723.0A CN201711263723A CN108151610A CN 108151610 A CN108151610 A CN 108151610A CN 201711263723 A CN201711263723 A CN 201711263723A CN 108151610 A CN108151610 A CN 108151610A
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- displacement
- free travel
- matrix
- displacement measurement
- jackscrew
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention proposes a kind of relative displacement measuring method in the confined space, and there are three basic stations for tool：Initial station measures station and reading station, and initial station jackscrew is locking state, and free travel bar is non-free state, and bonding agent is uncured state；It is non-locking state to measure station jackscrew, and free travel bar is band damping free state, and is state is fully cured in bonding agent；Reading station is that matrix is free state, and jackscrew is locking state, and free travel bar is non-free state.The present invention is different from traditional displacement measurement means, it has given up the electrical measurement process of traditional displacement measurement so that displacement measuring device miniaturization, independent, customizability are extremely strong, can complete displacement measurement task in the enclosed space.
Description
Technical field
The present invention relates to test of static strength technical field, specially a kind of relative displacement measurement sides in the confined space
Method can realize that the relative displacement in the confined space measures in test of static strength, belong to the compensation process of displacement measurement.
Background technology
Displacement measurement is one of mostly important measure the item of test of static strength, be analysis tested part structural strength,
The significant data of rigidity.Recently as the continuous development of test of static strength technology, the test of static strength of single testpieces single-point load
Gradually to composite test part combined load developing test, the complexity of pilot project proposes newly the displacement measurement of experiment
Higher requirement.The experiment of composite test part combined load generally requires each component part of verification testpieces under combined load and connects
The matching and reliability connect, therefore the relative displacement between component parts is often displacement measurement target, to verify each component parts both
Determine the matching and reliability under test load.It is one of common combination that intracavitary, which is carried, and mating surface is in intracavitary, testpieces
After combination, cavity space limitation, traditional displacement measurement method is difficult to realize the measurement of relative displacement, needs to carry out in advance for similar
The situation of fit-up gap quantitative research is stayed, has expedited the emergence of the relative displacement measurement demand in the confined space.
Traditional displacement measurement mainly passes through contact or contactless measurement.Contact displacement measurement method is to pass through position
Displacement sensor contact tested part surface obtains displacement of the testpieces under the experimental conditions such as power loading；Contactless position
Shift measurement method is based on light propagation or interventionist nature, and tested part displacement is obtained by optical computing.This two classes displacement
Measuring method has certain limitation in experiment is implemented, i.e., both be required to enough test spaces meet sensor installation,
Sensor reserves stroke or the needs of light propagation.Generally, traditional displacement measurement means are higher to space requirement, for measuring
Air line distance of the station at measurement direction is less than the situation of 150mm, and all traditional displacement measurement means are limited, simultaneously
The structural requirement measurement point of Traditional movement sensors cannot be less than 10mm with sensor mounting surface distance.
Certain displacement measurement stations of composite test part combined load experiment are often in enclosure space or hemi-closure space,
Since space limits, tradition machinery formula displacement measurement method and optical non-contact displacement measurement method are all difficult to realize displacement survey
Amount.
The purpose of invention
Certain displacement measurement stations of test of static strength are often in enclosure space or hemi-closure space, since space limits
System, tradition machinery formula displacement measurement method and optical non-contact displacement measurement method are all difficult to realize displacement measurement, the present invention
Purpose be the displacement measurement solved the problems, such as supplement displacement measurement means in the case of limited space.
Invention content
The present invention proposes a kind of relative displacement measurement side for (enclosure space or hemi-closure space) in the confined space
Method, the supplement displacement measurement means as test of static strength field.This method have it is simple in structure, be widely used, be easy to use,
The characteristics of use cost is low, customizability is strong can break through the limitation of traditional displacement measurement method, have stronger using valency
Value.
Technical problems to be solved
The technical issues of present invention need to solve be：In increasingly sophisticated test of static strength field, phase in the confined space is measured
The test requirements document of displacement is gradually increased, existing traditional displacement measurement means are since measuring device size is big, installation space
It is required that high and there is measurement circuit access requirement to cause traditional displacement measurement means that can not meet actual needs.Studying one kind can be with
The confined space work displacement measurement method be not only current research and production activity there is an urgent need to have current blank field
Effect supplement.
Technical solution
A kind of completely new mechanical contact displacement measurement method proposed by the present invention, can realize and measure in a limited space
The relative displacement of composite test part.This method is different from traditional displacement measurement means, it has given up the electricity of traditional displacement measurement
Survey process so that displacement measuring device miniaturization, independent, customizability are extremely strong, can complete displacement measurement in the enclosed space
Task.
The technical scheme is that：
A kind of relative displacement measuring method in the confined space, it is characterised in that：Include the following steps：
Step 1：The free travel bar for smearing lubricating grease is nested in the free travel channel of matrix, makes free travel bar
Slip in matrix free travel channel is with damping, and one end of free travel bar is concordant with matrix side, and the other end protrudes
Matrix side, L=0.00 at this time, and connect free walker on matrix in the jackscrew mounting hole of free travel channel through jackscrew
Journey bar fastens；
Step 2：Matrix is bonded in a limited space by bonding agent with needing to carry out that displacement measurement position is vertical to put down
Platform surface, free travel bar protrude matrix end and fit closely displacement measurement target and free travel rod axis and displacement measurement direction
Unanimously, displacement measuring device is in initial station；
Step 3：Unclamp jackscrew after bonding agent is fully cured, proceed by slow test, with slow test process into
Row, L become larger, and L, which is maintained at, after slow test end cycle measures target at the maximum displacement within the slow test period, lock
Silk is pressed closer, and matrix is removed from displacement layout points；
Step 4：The use of vernier caliper measurement L numerical value is maximum displacement of the displacement measurement target within the slow test period
Value.
Further preferred embodiment, a kind of relative displacement measuring method in the confined space, it is characterised in that：
For in the internal pressure slow test of internal pressure vessel；Matrix is bonded in the support in experiment supporting member support internal pressure vessel testpieces skirt section
On platform, measurement target is testpieces skirt section.
Advantageous effect
The present invention proposes a kind of novel touch displacement measurement method, has the beneficial effect that compared with prior art：
It can be as the supplement displacement measurement means in test of static strength.It is opposite the method achieve in a limited space
Displacement measurement, can complete conventional displacement sensor can not complete the measurement task of displacement measurement.This method measuring device structure
Simply, use cost is low, customizability is strong, can carry out respective design change according to different test environments and the requirement of testing experiment part
Shape breaks through the limitation of traditional displacement measurement method, has stronger application and promotional value.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
It obtains significantly or is recognized by the practice of the present invention.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Significantly and it is readily appreciated that, wherein：
Fig. 1 is displacement measuring device basic structure schematic diagram (front view)；
Fig. 2 is displacement measuring device basic structure schematic diagram (side view)；
Fig. 3 is displacement measuring device basic structure schematic diagram (vertical view)；
Wherein：1st, jackscrew is locked；2nd, matrix；3rd, free travel bar；
Fig. 4 is the basic station schematic diagram of displacement measuring device (initial station)；
Fig. 5 is the basic station schematic diagram of displacement measuring device (measuring station)；
Fig. 6 is the basic station schematic diagram of displacement measuring device (reading station)；
Wherein：4th, target is measured；5th, bonding agent；L, displacement measurement reading；
Fig. 7 is certain internal pressure vessel internal pressure certification test partial schematic diagram.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Compensation process of the present invention as tradition displacement measurement, it is simple in structure, without electric measuring system and control system, only by
Matrix, free travel bar and jackscrew composition, are aided with the materials such as bonding agent, resisting medium and slide calliper rule, clearance gauge, tool in actual use
.The displacement measuring device can obtain the maximum displacement reference data measured in target duty cycle, and basic structure is shown in
Fig. 1~Fig. 3.Matrix is a small size regular cube, is the basic part of measuring device；Matrix side through-hole is to be limited with guiding
The free travel channel of position effect；Threaded hole is jackscrew mounting hole on the upside of matrix, downside is matrix fixed bonding face.
There are three basic stations for this displacement measuring device tool：Initial station measures station and reading station, sees Fig. 4~figure
6.Initial station is the inoperative station before displacement measuring device starts in the work period, and basic characteristics are：Jackscrew is locking
State；Free travel bar is non-free state；Bonding agent is uncured state.Measurement station is displacement measuring device in work week
Work station in phase, basic characteristics are：Jackscrew is non-locking state；Free travel bar is band damping free state；Bonding
Is state is fully cured in agent.Reading station is data reading station of the displacement measuring device after the work period, basic
Feature is：Matrix is free state；Jackscrew is locking state；Free travel bar is non-free state.
It is first that the free travel bar for smearing lubricating grease is embedding when carrying out contact displacement measurement using the displacement measuring device
It is sleeved in free travel channel, makes slip of the free travel bar on matrix with certain damping, one end and the matrix side of bar
Face is concordant (L=0.00), is fastened using jackscrew, ensures that free travel bar position in the case of no ambient pressure is fixed and without cunning
It is dynamic to occur；Secondly displacement measuring device is bonded in the platform table vertical with needing progress displacement measurement position by bonding agent
Face, free travel bar protrusion matrix end fits closely the displacement measurement target and bar operative orientation is consistent with displacement measurement direction,
Displacement measuring device is in initial station.Jackscrew is unclamped after bonding agent is fully cured, free travel bar is made to be in free state,
Displacement measuring device is ready, can start to work, and displacement measuring device enters measurement station.L becomes larger in working condition,
L, which is maintained at, after work period measures target at the maximum displacement within the work period, locks jackscrew, makes at free travel bar
Displacement measuring device is removed in non-free state, and from displacement layout points, displacement measuring device enters reading station.Using high-precision
It is maximum displacement value of the displacement measurement target within this work period to spend vernier caliper measurement L numerical value.
Certain product carries out internal pressure Combined Trials, sees Fig. 7.The product bears inner pressuring load and axial external applied load, is tried to measure
Part is tested under inner pressuring load, whether slotted hole design meets the requirements, and needs to measure radial direction of the testpieces skirt section under inner pressuring load
Deflection measures radial displacement in testpieces skirt section outer rim, measuring basis is supporting member.Displacement measurement narrow space, radially
Measurement space is less than 100mm and depth is up to 800mm, and all indexs are unsatisfactory for the basic demand of traditional displacement measurement means, pass
System displacement measurement method is difficult to realize displacement measurement.The present invention obtains good effect for this experiment.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art are not departing from the principle of the present invention and objective
In the case of can make changes, modifications, substitutions and variations to the above described embodiments within the scope of the invention.
Claims (2)
1. a kind of relative displacement measuring method in the confined space, it is characterised in that：Include the following steps：
Step 1：The free travel bar for smearing lubricating grease is nested in the free travel channel of matrix, makes free travel bar in base
Slip in block free travel channel is with damping, and one end of free travel bar is concordant with matrix side, and the other end protrudes matrix
Side, L=0.00 at this time, and connect free travel bar on matrix in the jackscrew mounting hole of free travel channel through jackscrew
Fastening；
Step 2：Matrix is bonded platform table vertical with needing progress displacement measurement position in a limited space by bonding agent
Face, free travel bar protrude matrix end and fit closely displacement measurement target and free travel rod axis and displacement measurement direction one
It causes, displacement measuring device is in initial station；
Step 3：Jackscrew is unclamped after bonding agent is fully cured, proceeds by slow test, as slow test process carries out, L
It becomes larger, L, which is maintained at, after slow test end cycle measures target at the maximum displacement within the slow test period, locking top
Silk, and remove matrix from displacement layout points；
Step 4：The use of vernier caliper measurement L numerical value is maximum displacement value of the displacement measurement target within the slow test period.
2. a kind of relative displacement measuring method in the confined space according to claim 1, it is characterised in that：For interior
In the internal pressure slow test of pressure vessel；Matrix is bonded in the support platform in experiment supporting member support internal pressure vessel testpieces skirt section
On, measurement target is testpieces skirt section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711263723.0A CN108151610B (en) | 2017-12-05 | 2017-12-05 | Relative displacement measuring method used in limited space |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711263723.0A CN108151610B (en) | 2017-12-05 | 2017-12-05 | Relative displacement measuring method used in limited space |
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| CN108151610A true CN108151610A (en) | 2018-06-12 |
| CN108151610B CN108151610B (en) | 2020-06-16 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2638229A1 (en) * | 1988-10-21 | 1990-04-27 | Tessa Eddy | Device with comparative measurement for checking a shaft |
| CN201237492Y (en) * | 2008-07-24 | 2009-05-13 | 武汉钢铁(集团)公司 | Portable measurer for plate profile of hot rolled steel plate |
| CN202109853U (en) * | 2011-05-16 | 2012-01-11 | 济南吉利汽车有限公司 | Detecting pin of detecting tool |
| CN104006714A (en) * | 2014-05-07 | 2014-08-27 | 南京惠德机械有限公司 | Device and method for measuring closed mold height |
| CN204314131U (en) * | 2014-12-09 | 2015-05-06 | 上海航天精密机械研究所 | Pressure and displacement combination loading test unit in conduit |
| CN205049076U (en) * | 2015-10-29 | 2016-02-24 | 浙江永誉机械制造有限公司 | Frock of position three -dimensional coordinate size is concealed in scalable measurement |
| CN205388450U (en) * | 2016-03-17 | 2016-07-20 | 攀钢集团西昌钢钒有限公司 | High temperature casting blank size measurement instrument |
| CN205482769U (en) * | 2016-01-08 | 2016-08-17 | 中国飞机强度研究所 | Fixing device for displacement sensor |
| CN205825863U (en) * | 2016-06-02 | 2016-12-21 | 中国商用飞机有限责任公司 | Counter boring gauge |
-
2017
- 2017-12-05 CN CN201711263723.0A patent/CN108151610B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2638229A1 (en) * | 1988-10-21 | 1990-04-27 | Tessa Eddy | Device with comparative measurement for checking a shaft |
| CN201237492Y (en) * | 2008-07-24 | 2009-05-13 | 武汉钢铁(集团)公司 | Portable measurer for plate profile of hot rolled steel plate |
| CN202109853U (en) * | 2011-05-16 | 2012-01-11 | 济南吉利汽车有限公司 | Detecting pin of detecting tool |
| CN104006714A (en) * | 2014-05-07 | 2014-08-27 | 南京惠德机械有限公司 | Device and method for measuring closed mold height |
| CN204314131U (en) * | 2014-12-09 | 2015-05-06 | 上海航天精密机械研究所 | Pressure and displacement combination loading test unit in conduit |
| CN205049076U (en) * | 2015-10-29 | 2016-02-24 | 浙江永誉机械制造有限公司 | Frock of position three -dimensional coordinate size is concealed in scalable measurement |
| CN205482769U (en) * | 2016-01-08 | 2016-08-17 | 中国飞机强度研究所 | Fixing device for displacement sensor |
| CN205388450U (en) * | 2016-03-17 | 2016-07-20 | 攀钢集团西昌钢钒有限公司 | High temperature casting blank size measurement instrument |
| CN205825863U (en) * | 2016-06-02 | 2016-12-21 | 中国商用飞机有限责任公司 | Counter boring gauge |
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| CN108151610B (en) | 2020-06-16 |
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