CN107131985A - Spoke type grading pressure detection device - Google Patents
Spoke type grading pressure detection device Download PDFInfo
- Publication number
- CN107131985A CN107131985A CN201710451437.0A CN201710451437A CN107131985A CN 107131985 A CN107131985 A CN 107131985A CN 201710451437 A CN201710451437 A CN 201710451437A CN 107131985 A CN107131985 A CN 107131985A
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- stress
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- induction
- pressure detection
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- 238000001514 detection method Methods 0.000 title claims abstract description 42
- 230000006698 induction Effects 0.000 claims abstract description 66
- 239000000523 sample Substances 0.000 claims abstract description 59
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 238000006073 displacement reaction Methods 0.000 claims abstract description 7
- 238000012546 transfer Methods 0.000 claims description 20
- 238000012360 testing method Methods 0.000 claims description 7
- 239000011888 foil Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 19
- 238000002474 experimental method Methods 0.000 description 6
- 239000002689 soil Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000686 essence Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention provides a spoke type graded pressure detection device, which comprises a device main body, an induction mechanism and a detection mechanism, wherein one end of the device main body is provided with a fixed part, the induction mechanism is arranged at the other end of the device main body relative to the fixed part, the detection mechanism is arranged on the induction mechanism, the induction mechanism comprises a plurality of induction units which are nested together and are provided with stress probes, the stress probe of any induction unit close to the inner side is extended out of the stress probe of the induction unit close to the outer side adjacent to the stress probe in a sliding manner, under the external pressure, the stress probe of the induction unit close to the inner side can be pressed on the stress probe of the induction unit close to the outer side adjacent to the stress probe due to the pressing displacement towards one side of the device main body, and the detection mechanism comprises detection units which are respectively arranged on the induction units so as to form a detection unit for sensing. The spoke type grading pressure detection device can ensure the measurement precision of small pressure, can meet the measurement requirement of large pressure, and has good practicability.
Description
Technical field
The present invention relates to pressure sensor technique field, more particularly to a kind of radial transfer pressure detection means.
Background technology
With the fast development of national economy and scientific and technological level, occur in that increasing civil engineering, water conservancy, traffic etc. are large-scale
Construction project, and it is to obtain rock by the way that large geotechnical experiment is accurate to ensure one of key content of each construction project safe operation
The mechanics parameter of soil material.In soil test, three-axis tester turns into the key instrument of measurement rock-soil material mechanics parameter,
The starting stage load of triaxial test is smaller, but peak load is much larger than initial load, when arranging mechanics parameter, the starting stage
The measurement accuracy of load and peak load directly affects the accuracy of mechanics parameter.
At present, the measurement apparatus of large geotechnical finder charge numerical value is mainly measured one's own ability two kinds of ring and electronic pressure transmitter,
But there is problems with it：1st, 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；2nd, use
The larger load measurement device of range, disclosure satisfy that requirement of the experiment overall process to load measurement device range, but its is initial
Stage small load measurement accuracy is poor, and the pressure of starting stage often has extremely important.
Therefore, it is necessary to be improved to existing load measurement device, surveyed with solving conventional load in large geotechnical experiment
Amount device 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 radial transfer pressure detection means, with to solve existing large-scale soil
Conventional load measurement apparatus can not meet the problem of precision and range requirement simultaneously in work experiment.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of radial transfer pressure detection means, it includes：
Apparatus main body, fixed part is provided with one end of described device main body；
Induction mechanism, relative to the fixed part, is arranged at the other end of described device main body, the induction mechanism includes
Multiple sensing units that there is stress to pop one's head in being nested in together, the stress probe of any sensing unit in the inner part is slided
The stress probe for leaning out the sensing unit in the outer part adjacent thereto is outer, and under external pressure, the sense in the inner part
Answer the stress of unit to pop one's head in because of the press-in displacement to described device body side, and institute in the outer part adjacent thereto can be pressed on
State on the stress probe of sensing unit；
Testing agency, on the induction mechanism, and the testing agency includes being separately positioned on each sensing list
It is in member, to constitute the detection unit sensed to the yield deformation of each sensing unit.
Further, the sensing unit by most inner side is outside, and the rigidity of each sensing unit becomes big.
Further, the sensing unit is fixed in described device main body by one end, and many annularly arranged are
The induction rod of even arrangement is constituted, and the stress probe is relative to described device main body, is connected in each induction rod other end
Between the block for plate-like, and in stress probe described in the two of arbitrary neighborhood, the stress in the inner part probe, which has, to be worn
The first block in stress probe in the outer part is located at, and is connected with first block and is located at institute in the outer part
State the second block outside stress probe.
Further, the height for being pressed into direction of displacement along the sensing unit of first block is：With this described
The surrender for the sensing unit that height+first block of the adjacent probe of the stress in the outer part of one block is connected becomes
The yield deformation amount for the sensing unit that shape amount-stress in the outer part probe adjacent with the first block this described is connected.
Further, the induction rod is round bar, and the section of the stress probe is annular.
Further, the induction rod is steel.
Further, the external diameter of second block and the stress in the outer part adjacent with the second block this described are visited
The external diameter of head is equal.
Further, the fixed part is the screw rod being fixed in described device main body.
Further, the detection unit is the foil gauge being attached in each detection unit.
Further, the sensing unit is nested two set.
Relative to prior art, the present invention has the advantage that：
The radial transfer pressure detection means of the present invention, can by the setting of the induction mechanism with multiple sensing units
By multiple sensing units progressively, cooperate, the common measurement work for completing load numerical value；In the less initial rank of load
Section, only can be worked by the less sensing unit of single rigidity, to effectively improve measurement accuracy, and with the increase of load, can be by
The sensing unit of different-stiffness progressively participates in cooperating, and to cope with wide range dynamometry, and can be prevented effectively from small rigidity
The problem of proving ring range 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 radial transfer pressure detection means described in the embodiment of the present invention；
Fig. 2 is the arrangement schematic diagram of the induction rod described in the embodiment of the present invention；
Description of reference numerals：
1- top plates, 2- screw rods, the induction rods of 3- first, the induction rods of 4- second, the stress of 5- first probe, the stress of 6- second is visited
Head, the blocks of 61- first, the blocks of 62- second, 7- foil gauges.
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 radial transfer pressure detection means, it includes the apparatus main body that one end is provided with fixed part,
Also include the induction mechanism that the apparatus main body other end is located at relative to fixed part, and the detection machine being arranged on the induction mechanism
Structure.Wherein, induction mechanism includes multiple sensing units that there is stress to pop one's head in being nested in together, and any sensing in the inner part
The stress probe of unit slide leans out sensing unit in the outer part adjacent thereto stress probe it is outer, and under external pressure,
The stress of sensing unit in the inner part is popped one's head in because of the press-in displacement to apparatus main body side, and can be pressed on adjacent thereto outer
On the stress probe of the sensing unit of side.Testing agency then specifically include be separately positioned on it is on each sensing unit, with constitute pair
The detection unit that the yield deformation of each sensing unit is sensed.
The radial transfer pressure detection means of the present invention, can by the setting of the induction mechanism with multiple sensing units
By multiple sensing units progressively, cooperate, the common measurement work for completing load numerical value；In the less initial rank of load
Section, only can be worked by the less sensing unit of single rigidity, to effectively improve measurement accuracy, and with the increase of load, can be by
The sensing unit of different-stiffness progressively participates in cooperating, and to tackle wide range dynamometry, and can be prevented effectively from small rigidity dynamometry
The problem of circular rector journey is not enough.
Based on design as above thought, a kind of example arrangement of the radial transfer pressure detection means of the present embodiment is such as
Shown in Fig. 1, wherein, the present embodiment is illustrated by be nested in together two of the sensing unit of induction mechanism, and is sensed single
Member using other quantity when apparatus structure and its working mechanism with it is described below identical, the present embodiment will no longer be gone to live in the household of one's in-laws on getting married
State.In the present embodiment, foregoing apparatus main body is block top plate 1, and the fixed part being arranged on apparatus main body is then to be connected in
The stud 2 of the side of top plate 1, and two sensing units in the induction mechanism of the opposite side of fixed plate 1 are by wheel in a ring
Multiple induction rods that spoke shape is evenly arranged are constituted, and the stress in each sensing unit is popped one's head in namely is connected in accordingly relative to top plate 1
Each induction rod the other end between.
For ease of description, the induction rod in the present embodiment in two sensing units be referred to as the first induction rod 3 and
Second induction rod 4, and the first induction rod 3 arranges in the outer part, and the second induction rod 4 is arranged in the inner part, meanwhile, the first induction rod 3
Also compared to the second induction rod 4 have bigger diameter, with this so that by inner side outwards, each sensing unit of nested arrangement it is firm
Spend and set for increase, so that from inside to outside, the range of sensing unit becomes big.
As a preferred embodiment, the first induction rod 3 and the second induction rod 4 are both designed as round bar, and both in the present embodiment
Also it is steel structure, wherein the diameter of the first induction rod 3 can be 2cm, the diameter of the second induction rod 3 is then 1.5cm.And it is in place
Put in arrangement, also as shown in Figure 2 so that the interlaced arrangement of multiple first induction rod, 3 and second induction rods 4, can be with this
More preferable measurement effect is obtained during pressure detecting.Stress probe in the present embodiment in each sensing unit is then to be fixed on corresponding sense
The block for plate-like between boom end is answered, and for ease of description, the first stress probe 5 is referred to as corresponding to the first induction rod 3,
Then referred to as the second stress probe 6 being connected with the second induction rod 4.
Wherein, the second stress probe 6, which is slided, leans out outside the first stress probe 5, and is pressed being directed to the outside of the side of top plate 1
Under power, the second stress probe 6 lean out end can be pressed on the first stress probe 5 on.On concrete structure, in the present embodiment first by
Power probe 5 is loop configuration, and the second stress probe 6 then has the first block 61 for being arranged in 5 centers of the first stress probe, and
It is connected with the first block 61, and the second block 62 outside the first stress probe 5.In addition, relative to the second block 62,
The other end of one block 61 is also formed with being overlapped on the overhanging flange of radial direction on the first stress probe 5, and in the first block 61
With may also set up on the second block 62 through the second stress pop one's head in 6 arrangement through holes so that the second stress probe 6 also be ring junction
Structure, so as to set up other sensing units in the inner side of each second induction rod 4.
In the present embodiment in structure design, the first block 61 in the second stress probe 6 is pressed into displacement along sensing unit
The height in direction, namely on the basis of orientation shown in Fig. 1, the vertical height of the first block 61 is：First stress probe 5 it is perpendicular
To height+the yield deformation amount for the sensing unit being made up of each second induction rod 4-sense being made up of each first induction rod 3
Answer the yield deformation amount of unit.Being so designed that can ensure in pressure detecting, and each sensing unit can be with tested measuring pressure
Increase and be connected well, to avoid causing the less sensing unit of inner side range damaging.
Correspond to the size of the foregoing induction rod 4 of first induction rod 3 and second, the first stress probe preferably in the present embodiment
5 vertical height is 3cm, and its external diameter is 22cm, and internal diameter is then 10cm, and the and the first block 61 in stress probe 6 it is outer
Footpath is 9.5cm, and vertical height is 5cm, and the vertical height of the second block 62 is 3cm, the external diameter of external diameter then with the first stress probe 5
Consistent is all 22cm.Certainly, except the above-mentioned each size of use, the first stress probe 5, the first block 61 and the second block 62 are constituted
The second stress probe 6, and the first induction rod 3 and the second induction rod 4 be also designed to other sizes.In addition, each induction rod
Except for round bar, its section is alternatively square or triangle etc., and induction rod is except for steel material, it also can be using other tools
The metal for having preferable coefficient of elasticity is made, and the first stress probe 5 and the second stress probe 6 are except the plate-like for annular, two
Person also may be configured as square or triangle plate-like block.
It is foregoing in the present embodiment to be arranged on each sensing unit, sensed with the yield deformation to each sensing unit
Detection unit is respectively the foil gauge 7 being sticked on the first induction rod 3 and the second induction rod 4, and each foil gauge 7 uses existing structure
Just can, it is connected with external signal collecting device, so that the yield deformation amount of each induction rod can be changed into electric signal, and with each sense
The stiffness coefficient of bar is answered to combine, conversion draws detected pressure value.
Detection means when in use, is arranged on anti-by the radial transfer pressure detection means of the present embodiment by stud 2
On power frame, and each foil gauge 7 is connected on external signal collecting device, then just can start the detection to pressure, in detection,
In the case of small-range, only worked as the second stress probe 6 corresponding to the second induction rod of small-range, its precision and the precision
The sensing unit that is made up of the second induction rod 4 of small-range of measurement range determine.In the case of wide range, the second stress probe
6 are pressed on the first stress probe 5, and the sensing unit that now the first induction rod 3 of wide range is constituted also assists in detection, and with it is small
The sensing unit co-ordination of range, shares detection pressure jointly, and its precision and range then sense list by small-range and wide range
First common determination.
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 radial transfer pressure detection means, it is characterised in that including：
Apparatus main body, fixed part is provided with one end of described device main body；
Induction mechanism, relative to the fixed part, is arranged at the other end of described device main body, the induction mechanism includes multiple
The sensing unit that there is stress to pop one's head in together is nested in, the stress probe slip of any sensing unit in the inner part is leant out
The stress probe of the sensing unit in the outer part adjacent thereto is outer, and under external pressure, the sensing list in the inner part
The stress of member is popped one's head in because of the press-in displacement to described device body side, and can be pressed on the sense in the outer part adjacent thereto
Answer on the stress probe of unit；
Testing agency, on the induction mechanism, and the testing agency includes being separately positioned on each sensing unit
, to constitute the detection unit sensed to the yield deformation of each sensing unit.
2. radial transfer pressure detection means according to claim 1, it is characterised in that：Sensing unit by most inner side
Outwards, the rigidity of each sensing unit becomes big.
3. radial transfer pressure detection means according to claim 2, it is characterised in that：The sensing unit is by one end
It is fixed in described device main body, and the induction rod that many annularly arranged uniformly arrange is constituted, the stress probe is phase
For described device main body, the block for plate-like being connected between each induction rod other end, and in the two of arbitrary neighborhood
In the stress probe, stress probe in the inner part is with first piece in the stress probe being located in the outer part
Body, and with first block be connected and be located in the outer part the stress probe outside the second block.
4. radial transfer pressure detection means according to claim 3, it is characterised in that：First block along institute
State sensing unit press-in direction of displacement height be：The height of the stress in the outer part probe adjacent with the first block this described
The yield deformation amount for the sensing unit that degree+first block is connected-adjacent with the first block this described in the outer part
The yield deformation amount for the sensing unit that stress probe is connected.
5. radial transfer pressure detection means according to claim 3, it is characterised in that：The induction rod is round bar,
The section of the stress probe is annular.
6. radial transfer pressure detection means according to claim 5, it is characterised in that：The induction rod is steel
's.
7. radial transfer pressure detection means according to claim 5, it is characterised in that：The external diameter of second block
The external diameter of the stress in the outer part probe adjacent with the second block this described is equal.
8. radial transfer pressure detection means according to claim 1, it is characterised in that：The fixed part is to be fixed on
Screw rod in described device main body.
9. radial transfer pressure detection means according to claim 1, it is characterised in that：The detection unit is to be sticked
Foil gauge in each detection unit.
10. radial transfer pressure detection means according to any one of claim 1 to 9, it is characterised in that：The sense
It is nested two set to answer unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710451437.0A CN107131985B (en) | 2017-06-15 | 2017-06-15 | Spoke type grading pressure detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710451437.0A CN107131985B (en) | 2017-06-15 | 2017-06-15 | Spoke type grading pressure detection device |
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| Publication Number | Publication Date |
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| CN107131985A true CN107131985A (en) | 2017-09-05 |
| CN107131985B CN107131985B (en) | 2023-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710451437.0A Active CN107131985B (en) | 2017-06-15 | 2017-06-15 | Spoke type grading pressure detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916419A (en) * | 2021-11-05 | 2022-01-11 | 中国航发沈阳发动机研究所 | Composite load sensor |
| CN113932956A (en) * | 2021-11-05 | 2022-01-14 | 中国航发沈阳发动机研究所 | Wide-range detection load sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104807A (en) * | 1985-06-02 | 1986-08-06 | 哈尔滨工业大学 | Multi-range load cell |
| US20090043534A1 (en) * | 2005-05-10 | 2009-02-12 | Tim Prestidge | Dimensional measurement probe |
| CN203929494U (en) * | 2014-06-17 | 2014-11-05 | 沈阳天星试验仪器有限公司 | A kind of for scleroscopic power sensor limiter mechanism |
| CN104280158A (en) * | 2014-09-10 | 2015-01-14 | 舟山市质量技术监督检测研究院 | Multi-layer force value sensor for tension tester and measuring method of multi-layer force value sensor |
| US20160146284A1 (en) * | 2013-12-30 | 2016-05-26 | Csr Yangtyze Co., Ltd. | Two-Stage Stiffness Type Elastomer Combined Device |
| CN105675097A (en) * | 2016-03-23 | 2016-06-15 | 无锡研测技术有限公司 | Redundancy weighing sensor |
| CN206974575U (en) * | 2017-06-15 | 2018-02-06 | 中国水利水电科学研究院 | Spoke type grading pressure detection device |
-
2017
- 2017-06-15 CN CN201710451437.0A patent/CN107131985B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104807A (en) * | 1985-06-02 | 1986-08-06 | 哈尔滨工业大学 | Multi-range load cell |
| US20090043534A1 (en) * | 2005-05-10 | 2009-02-12 | Tim Prestidge | Dimensional measurement probe |
| US20160146284A1 (en) * | 2013-12-30 | 2016-05-26 | Csr Yangtyze Co., Ltd. | Two-Stage Stiffness Type Elastomer Combined Device |
| CN203929494U (en) * | 2014-06-17 | 2014-11-05 | 沈阳天星试验仪器有限公司 | A kind of for scleroscopic power sensor limiter mechanism |
| CN104280158A (en) * | 2014-09-10 | 2015-01-14 | 舟山市质量技术监督检测研究院 | Multi-layer force value sensor for tension tester and measuring method of multi-layer force value sensor |
| CN105675097A (en) * | 2016-03-23 | 2016-06-15 | 无锡研测技术有限公司 | Redundancy weighing sensor |
| CN206974575U (en) * | 2017-06-15 | 2018-02-06 | 中国水利水电科学研究院 | Spoke type grading pressure detection device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916419A (en) * | 2021-11-05 | 2022-01-11 | 中国航发沈阳发动机研究所 | Composite load sensor |
| CN113932956A (en) * | 2021-11-05 | 2022-01-14 | 中国航发沈阳发动机研究所 | Wide-range detection load sensor |
| CN113932956B (en) * | 2021-11-05 | 2023-08-22 | 中国航发沈阳发动机研究所 | Wide-range detection load sensor |
| CN113916419B (en) * | 2021-11-05 | 2023-08-22 | 中国航发沈阳发动机研究所 | Composite load sensor |
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| Publication number | Publication date |
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