CN107131979A - Stagewise high precision and large measuring range pressure-detecting device - Google Patents
Stagewise high precision and large measuring range pressure-detecting device Download PDFInfo
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- CN107131979A CN107131979A CN201710451217.8A CN201710451217A CN107131979A CN 107131979 A CN107131979 A CN 107131979A CN 201710451217 A CN201710451217 A CN 201710451217A CN 107131979 A CN107131979 A CN 107131979A
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- dynamometry
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- high precision
- ring
- measuring range
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000005259 measurement Methods 0.000 abstract description 23
- 241000276425 Xiphophorus maculatus Species 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000686 essence Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention provides a kind of stagewise high precision and large measuring range pressure-detecting device, it includes the apparatus main body that one end is provided with fixed part, relative to fixed part, it is arranged at the force measuring machine of the other end of apparatus main body, and in the most proving ring of inner side, and the displacement detecting mechanism being fixed on apparatus main body, there is force measuring machine side to be fixed on apparatus main body, and it is nested in multiple proving rings together, relative to the side being connected with apparatus main body, dynamometry head is respectively fixed with the opposite side of each proving ring, and arranged for interval between adjacent each dynamometry head, the dynamometry head that the test side of displacement detecting mechanism is run through on each proving ring of inner side, and abut and be connected with the dynamometry head on outermost proving ring, so that the detection of the press-in displacement to each dynamometry ring apparatus main body side can be formed.The stagewise high precision and large measuring range pressure-detecting device of the present invention can ensure the measurement accuracy to small pressure, and the measurement demand to big pressure can be met again, and have good practicality.
Description
Technical field
The present invention relates to pressure sensor technique field, more particularly to a kind of stagewise high precision and large measuring range pressure detecting dress
Put.
Background technology
With China's expanding economy, current domestic Large Scale Construction Engineering is more and more, it is ensured that the pass of its safe operation
One of key content is to test the accurate mechanics parameter for obtaining rock-soil material by large geotechnical.In soil test, triaxial test
Machine turns into the key instrument of measurement rock-soil material mechanics parameter, and the starting stage load of triaxial test is smaller, but peak load
Much larger than initial load, when arranging mechanics parameter, the measurement accuracy of starting stage load and peak load directly affects mechanics
The accuracy of parameter.
At present, the measurement apparatus of large geotechnical finder charge numerical value mainly has two kinds of proving ring and electronics force cell,
But there is problems with it：1. using the higher load measurement device of precision, when load is smaller, it ensure that measurement essence
Degree, but requirement of the experiment to load measurement device range can not be met, it is impossible to obtain the payload data of experiment overall process；2. use
The larger load measurement device of range, disclosure satisfy that requirement of the experiment overall process to load measurement device range, but starting stage
Small load measurement accuracy is poor.
In consideration of it, being necessary to be improved load measurement device of the prior art, to solve in large geotechnical experiment
Conventional load measurement apparatus can not meet the problem of precision and range requirement simultaneously.
The content of the invention
In view of this, the present invention is directed to propose a kind of stagewise high precision and large measuring range pressure-detecting device, existing to solve
Conventional load measurement apparatus can not meet the problem of precision and range requirement simultaneously in large geotechnical experiment.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of stagewise high precision and large measuring range pressure-detecting device, it includes：
Apparatus main body, fixed part is provided with one end of described device main body；
Force measuring machine, relative to the fixed part, is arranged at the other end of described device main body, the force measuring machine has
Side is fixed in described device main body and is nested in multiple proving rings together, relative to what is be connected with described device main body
Side, dynamometry head is respectively fixed with the opposite side of each proving ring, and arranged for interval between adjacent each dynamometry head；
Displacement detecting mechanism, in the most proving ring of inner side, and is fixed in described device main body, and institute's rheme
The test side of testing agency is moved through the dynamometry head on each proving ring of inner side, and with outermost institute
State the dynamometry head on proving ring and abut and be connected, so that the press-in to each dynamometry ring described device body side can be formed
The detection of displacement.
Further, the fixed part is the stud being fixed in described device main body.
Further, the rigidity of each proving ring is different.
Further, the proving ring by most inner side is outside, and the rigidity of each proving ring is reduced successively.
Further, in projection and groove of the dynamometry head described in the two of arbitrary neighborhood provided with correspondence arrangement, the projection
With groove can be because arranging in the outer part the dynamometry ring described device body side press-in displacement be embedded at together.
Further, described raised on the dynamometry arranged in the inner part head, the groove is located to be arranged in the outer part
The dynamometry head on.
Further, the projection is in spherical, and the section of the groove is arc-shaped.
Further, the spacing between adjacent dynamometry head is adjustable.
Further, the side being connected in the proving ring and described device main body, between the adjacent proving ring
It is folded with backing plate.
Further, the displacement detecting mechanism is dial gauge.
Relative to prior art, the present invention has the advantage that：
The stagewise high precision and large measuring range pressure-detecting device of the present invention passes through the force measuring machine with multiple proving rings
Set, can by multiple proving rings progressively, cooperate, the common measurement work for completing load numerical value；It is less initial in load
In the stage, only it can be worked by the less proving ring of single rigidity, can be by effectively improve measurement accuracy, and with the increase of load
The proving ring of different-stiffness progressively participates in cooperating, and to cope with wide range dynamometry, and can be prevented effectively from small rigidity and survey
The problem of power circular rector journey is not enough.
Brief description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of the stagewise high precision and large measuring range pressure-detecting device described in the embodiment of the present invention；
Description of reference numerals：
Rigidity proving ring in 1- fixed plates, 2- studs, the small rigidity proving rings of 3-, 4-, the big rigidity proving rings of 5-, 6- backing plates,
7- dynamometry heads, 8- is raised, 9- grooves, 10- dial gauges, 11- measurement bars.
Embodiment
It should be noted that in the case where not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Mutually combination.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The present invention relates to a kind of stagewise high precision and large measuring range pressure-detecting device, it includes the dress that one end is provided with fixed part
Main body is put, and is arranged at relative to fixed part the force measuring machine of the other end of apparatus main body, there is the force measuring machine side to consolidate
It is connected on apparatus main body and is nested in multiple proving rings together, and relative to the side being connected with apparatus main body, in each dynamometry
The opposite side of ring is also respectively fixed with dynamometry head, and arranged for interval between adjacent each dynamometry head.The stagewise of the present invention is high-precision
Spending wide range pressure-detecting device also includes being located in the most proving ring of inner side, and the displacement detecting machine being fixed on apparatus main body
Structure, the dynamometry head that the test side of the displacement detecting mechanism is run through on each proving ring of inner side, and with outermost proving ring
On dynamometry head abut be connected, with can be formed to each dynamometry ring apparatus main body side press-in displacement detection.
The stagewise high precision and large measuring range pressure-detecting device of the present invention passes through the force measuring machine with multiple proving rings
Set, can by multiple proving rings progressively, cooperate, the common measurement work for completing load numerical value is less initial in load
In the stage, only it can be worked by the less proving ring of single rigidity, can be by effectively improve measurement accuracy, and with the increase of load
The proving ring of different-stiffness progressively participates in cooperating, and to cope with wide range dynamometry, and can be prevented effectively from small rigidity and survey
The problem of power circular rector journey is not enough.
Based on design as above thought, a kind of example of the stagewise high precision and large measuring range pressure-detecting device of the present embodiment
Property structure as shown in fig. 1, wherein the present embodiment is set to be nested in together three progress with the proving ring in force measuring machine
Illustrate, and proving ring use other quantity when apparatus structure and its working mechanism with it is described below identical, the present embodiment will
No longer repeated.In the present embodiment, foregoing apparatus main body is block fixed plate 1, is arranged at the fixation on apparatus main body
Portion is then the stud 2 for being connected in the side of fixed plate 1, and the proving ring in the force measuring machine of the opposite side of fixed plate 1 includes position
In outermost small rigidity proving ring 3, middle middle rigidity proving ring 4, and the big rigidity proving ring 5 positioned at most inner side, three
Individual proving ring ecto-entad internal diameter diminishes, and thickness becomes big, with this so that the rigidity increase of proving ring.
As a kind of applicating example in the present embodiment, particularly the internal diameter of small rigidity proving ring 3 can be that 28.5cm, thickness are
0.8cm, the internal diameter of middle rigidity proving ring 4 is 21cm, and thickness is 1.2cm, and the internal diameter of big rigidity proving ring 5 is then 12cm, thickness
For 2cm, the width of three proving rings can be 5cm.In addition, the side of three proving rings passes through the spiral shell that is bolted in fixed plate 1
Bolt is fixed in fixed plate 1, and for controlling beneficial to three proving rings, backing plate 6 is also folded between adjacent proving ring,
The thickness of backing plate 6 can be 0.5cm, be arranged in each backing plate 6 for fixing the bolt of each proving ring, and will by each backing plate 6
Three proving rings are fixedly clamped in fixed plate 1.
In the present embodiment, the dynamometry first 7 located at each proving ring side is specific next also to be bolted on proving ring
Say, dynamometry first 7 is made up of the platy structure for being interposed in proving ring both sides, wherein positioned at outside platy structure and proving ring it is outer
Side face is tangent to be set, and is then connected on the medial surface of proving ring positioned at the two ends of platy structure of inner side, and in order to beneficial to
Clamping to proving ring, is also equipped with a chondritic between the platy structure and proving ring of inner side, passes through the chondritic
Realize the abutting to proving ring.Just worn between the platy structure for being connected to both sides for fixing the bolt of dynamometry first 7, and this reality
The gap for being also reserved with 0.5cm in example between each adjacent dynamometry first 7 is applied, the gap is that corresponding proving ring is provided
Deformation gap, and the prearrangement of deformation amount gap is to realize the arranged for interval between foregoing each dynamometry first 7.
It is to be needed suitable for different measurements in the present embodiment, the deformation gap reserved between each adjacent dynamometry first 7 is also set
Be calculated as it is adjustable, concrete structure arrangement on, can be carried out by replacing the platy structure of different-thickness.In addition, in reality
Border measurement in cause each dynamometry first 7 between contact well, and the external force accepted can be carried out between each proving ring compared with
Good conduction, is also equipped with being embedded at projection 8 and groove 9 together between the dynamometry first 7 of arbitrary neighborhood, wherein, projection 8
It can use spherical, and groove 9 is then arc-shaped accordingly.
Certainly, except separately designing as spherical and arc-shaped, projection 8 and groove 9 or be adapted such as square, triangle
The result such as shape or ellipse.And in location arrangements of the projection 8 with groove 9, can be as shown in Figure 1 in the present embodiment, make convex
Rise in 8 dynamometry first 7 being located in the inner part, and make it that groove 9 is located in dynamometry first 7 in the outer part, but, shown in Fig. 1
Position set, also projection 8 and the position of groove 9 can certainly be interchangeable, its can't first to dynamometry 7 work bring reality
The influence of matter.
Foregoing displacement detecting mechanism is to be arranged at the dial gauge inside the most big rigidity proving ring 5 of inner side in the present embodiment
10, dial gauge 10 is equally fixed in fixed plate 1 via backing plate 6, and dial gauge 10 be used for the measurement bar 11 that measures then to
Extend at outermost dynamometry first 7.Now, on the middle rigidity proving ring 4 of inner side and big rigidity proving ring 5, with
And it is provided with the through hole through arrangement in the dynamometry first 7 that is fixed on two proving rings of connection, the measurement bar of dial gauge 10 and wear
In the through hole, and it is connected in outermost dynamometry first 7.
The stagewise high precision and large measuring range pressure-detecting device of the present embodiment assembling when, by big rigidity proving ring 5, in just
Spend proving ring 4 and small rigidity proving ring 3 is by backing plate 6 and is bolted in fixed plate 1, then dynamometry is installed on each proving ring
First 7, then detection means is arranged on reaction frame by stud 2, the center of each proving ring of inspection and each dynamometry first 7 is at one
After on straight line, then dial gauge 10 is installed, and the reading of dial gauge 10 is returned to zero, just can carry out pressure detecting.
In specific detection, only it is operated for less load by small rigidity proving ring 3, to improve accuracy of detection,
With the increase of pressure loading, small rigidity proving ring 3 and middle rigidity proving ring 4 can be made to cooperate jointly, load continues to increase
When, then three proving rings can be made to cooperate together, so as to carry out the detection of range load, it is to avoid small rigidity proving ring range is not
Sufficient the problem of.After the completion of detection, detected load can be calculated according to the stiffness coefficient of the reading of dial gauge 10 and each proving ring
Pressure value, its specific calculating process is identical with existing dynamometry ring mechanism.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (10)
1. a kind of stagewise high precision and large measuring range pressure-detecting device, it is characterised in that including：
Apparatus main body, fixed part is provided with one end of described device main body；
Force measuring machine, relative to the fixed part, is arranged at the other end of described device main body, the force measuring machine has side
It is fixed in described device main body and is nested in multiple proving rings together, relative to the side being connected with described device main body,
Dynamometry head is respectively fixed with the opposite side of each proving ring, and arranged for interval between adjacent each dynamometry head；
Displacement detecting mechanism, in the most proving ring of inner side, and is fixed in described device main body, and the displacement is examined
The test side of mechanism is surveyed through the dynamometry head on each proving ring of inner side, and described is surveyed with outermost
Dynamometry head on power ring, which is abutted, to be connected, can form the press-in displacement to each dynamometry ring described device body side
Detection.
2. stagewise high precision and large measuring range pressure-detecting device according to claim 1, it is characterised in that：The fixed part
For the stud being fixed in described device main body.
3. stagewise high precision and large measuring range pressure-detecting device according to claim 1, it is characterised in that：Each dynamometry
The rigidity of ring is different.
4. stagewise high precision and large measuring range pressure-detecting device according to claim 3, it is characterised in that：By most inner side
Outwards, the rigidity of each proving ring is reduced the proving ring successively.
5. stagewise high precision and large measuring range pressure-detecting device according to claim 1, it is characterised in that：In arbitrary neighborhood
Two described in projection and groove of the dynamometry head provided with correspondence arrangement, described raised and groove can be because of the survey arranged in the outer part
The press-in displacement of power ring described device body side and be embedded at together.
6. stagewise high precision and large measuring range pressure-detecting device according to claim 5, it is characterised in that：The raised position
In on the dynamometry head arranged in the inner part, the groove is located on the dynamometry head arranged in the outer part.
7. stagewise high precision and large measuring range pressure-detecting device according to claim 5, it is characterised in that：The projection is in
Spherical, the section of the groove is arc-shaped.
8. stagewise high precision and large measuring range pressure-detecting device according to claim 1, it is characterised in that：Adjacent is described
Spacing between dynamometry head is adjustable.
9. stagewise high precision and large measuring range pressure-detecting device according to claim 1, it is characterised in that：In the dynamometry
The side that ring is connected with described device main body, backing plate is folded between the adjacent proving ring.
10. stagewise high precision and large measuring range pressure-detecting device according to any one of claim 1 to 9, its feature exists
In：The displacement detecting mechanism is dial gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710451217.8A CN107131979B (en) | 2017-06-15 | 2017-06-15 | Graded high-precision wide-range pressure detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710451217.8A CN107131979B (en) | 2017-06-15 | 2017-06-15 | Graded high-precision wide-range pressure detection device |
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| Publication Number | Publication Date |
|---|---|
| CN107131979A true CN107131979A (en) | 2017-09-05 |
| CN107131979B CN107131979B (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710451217.8A Active CN107131979B (en) | 2017-06-15 | 2017-06-15 | Graded high-precision wide-range pressure detection device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4375243A (en) * | 1981-03-30 | 1983-03-01 | Doll W Gary | Wide range high accuracy weighing and counting scale |
| CN85104807A (en) * | 1985-06-02 | 1986-08-06 | 哈尔滨工业大学 | Multi-range load cell |
| CN203163914U (en) * | 2013-03-29 | 2013-08-28 | 武汉理工光科股份有限公司 | Fiber grating differential type dynamometer capable of achieving self temperature compensation |
| CN106840472A (en) * | 2017-01-12 | 2017-06-13 | 东南大学 | A kind of high-precision three-dimensional soil pressure testing device and its range adjustment system |
-
2017
- 2017-06-15 CN CN201710451217.8A patent/CN107131979B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4375243A (en) * | 1981-03-30 | 1983-03-01 | Doll W Gary | Wide range high accuracy weighing and counting scale |
| CN85104807A (en) * | 1985-06-02 | 1986-08-06 | 哈尔滨工业大学 | Multi-range load cell |
| CN203163914U (en) * | 2013-03-29 | 2013-08-28 | 武汉理工光科股份有限公司 | Fiber grating differential type dynamometer capable of achieving self temperature compensation |
| CN106840472A (en) * | 2017-01-12 | 2017-06-13 | 东南大学 | A kind of high-precision three-dimensional soil pressure testing device and its range adjustment system |
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| Publication number | Publication date |
|---|---|
| CN107131979B (en) | 2023-11-24 |
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