CN206974575U - Radial transfer pressure detection means - Google Patents
Radial transfer pressure detection means Download PDFInfo
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- CN206974575U CN206974575U CN201720699560.XU CN201720699560U CN206974575U CN 206974575 U CN206974575 U CN 206974575U CN 201720699560 U CN201720699560 U CN 201720699560U CN 206974575 U CN206974575 U CN 206974575U
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- sensing unit
- stress
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- pressure detection
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Abstract
The utility model provides a kind of radial transfer pressure detection means, it includes the apparatus main body that one end is provided with fixed part, relative to fixed part, it is arranged at the induction mechanism of the other end of apparatus main body, and the testing agency on induction mechanism, the induction mechanism includes multiple sensing units with stress probe being nested in together, the stress probe of any sensing unit in the inner part, which slides, to be leant out outside the stress probe of sensing unit in the outer part adjacent thereto, 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 it can be pressed on the stress probe of sensing unit in the outer part adjacent thereto, the testing agency includes being separately positioned on each sensing unit, to form the detection unit sensed to the yield deformation of each sensing unit.Radial transfer pressure detection means of the present utility model can ensure the measurement accuracy to small pressure, can meet the measurement demand to big pressure again, and have good practicality.
Description
Technical field
Pressure sensor technique field is the utility model is related to, 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, it is large-scale to there is increasing civil engineering, water conservancy, traffic etc.
Construction project, and it is to test accurate acquisition rock by large geotechnical to ensure one of key content of each construction project safe operation
The mechanics parameter of soil material.In soil test, three-axis tester has turned 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, measurement essence can be ensured
Degree, but can not meet to test the requirement to load measurement device range, it is impossible to obtain the payload data of experiment overall process；2nd, use
The larger load measurement device of range, requirement of the experiment overall process to load measurement device range is disclosure satisfy that, but its is initial
Stage small load measurement accuracy is poor, and the pressure of starting stage often have it is extremely important.
Therefore, it is necessary to be improved to existing load measurement device, surveyed with solving conventional load in large geotechnical experiment
The problem of amount device can not meet precision and range requirement simultaneously.
Utility model content
In view of this, the utility model is directed to a kind of radial transfer pressure detection means, with existing big to solve
Conventional load measurement apparatus can not meet the problem of precision and range requirement simultaneously in type soil test.
To reach above-mentioned purpose, what the technical solution of the utility model was realized in：
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, the other end of described device main body is arranged at, the induction mechanism includes
Multiple sensing units with stress probe being nested in together, the stress probe of any sensing unit in the inner part slide
It is outer to lean out the stress probe of the sensing unit in the outer part adjacent thereto, 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
Detection unit in member, being sensed with composition 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 more annularly arranged are equal
The induction rod of even arrangement is formed, 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 two stress probes of arbitrary neighborhood, stress probe in the inner part, which has, to be worn
The first block being located in stress probe in the outer part, and be connected with first block and be located at institute in the outer part
State the second block outside stress probe.
Further, the height that direction of displacement is pressed into 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 utility model has the advantage that：
Radial transfer pressure detection means setting by the induction mechanism with multiple sensing units of the present utility model
Put, can by multiple sensing units progressively, cooperate, the common measurement work for completing load numerical value；It is less just in load
In stage beginning, only it can be worked by the less sensing unit of single rigidity, to effectively improve measurement accuracy, and with the increase of load,
It can progressively participate in cooperating by the sensing unit of different-stiffness, to cope with wide range dynamometry, and can effectively avoid small
The problem of rigidity proving ring range deficiency.
Brief description of the drawings
Form a part of accompanying drawing of the present utility model to be used for providing further understanding to of the present utility model, this practicality is new
The schematic description and description of type is used to explain the utility model, does not form to improper restriction of the present utility model.
In accompanying drawing：
Fig. 1 is the structural representation of the radial transfer pressure detection means described in the utility model embodiment；
Fig. 2 is the arrangement schematic diagram of the induction rod described in the utility model embodiment；
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 are 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 feature in embodiment and embodiment in the utility model can
To be mutually combined.
Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
A kind of radial transfer pressure detection means is the utility model is related to, it includes the device master that one end is provided with fixed part
Body, in addition to the induction mechanism relative to fixed part located at the apparatus main body other end, and the inspection being arranged on the induction mechanism
Survey mechanism.Wherein, induction mechanism includes multiple sensing units with stress probe being nested in together, and any in the inner part
The stress probe of sensing unit, which slides, to be leant out outside the stress probe of sensing unit in the outer part adjacent thereto, and in external pressure
Under, 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
On the stress probe of sensing unit in the outer part.Testing agency then specifically include be separately positioned on it is on each sensing unit, with structure
The detection unit that the yield deformation of paired each sensing unit is sensed.
Radial transfer pressure detection means setting by the induction mechanism with multiple sensing units of the present utility model
Put, can by multiple sensing units progressively, cooperate, the common measurement work for completing load numerical value；It is less just in load
In stage beginning, only it can be worked by the less sensing unit of single rigidity, to effectively improve measurement accuracy, and with the increase of load,
It can progressively participate in cooperating by the sensing unit of different-stiffness, to tackle wide range dynamometry, and can effectively avoid small rigidity
The problem of proving ring range deficiency.
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 illustrates by be nested in together two of the sensing unit of induction mechanism, and senses single
Using apparatus structure during other quantity and its working mechanism with described below identical, the present embodiment will no longer be gone to live in the household of one's in-laws on getting married member
State.In the present embodiment, for foregoing apparatus main body for block top plate 1, 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 formed, 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 is arranged in the outer part, and the second induction rod 4 is arranged in the inner part, meanwhile, the first induction rod 3
Also there is bigger diameter compared to the second induction rod 4, it is with this so that outside by inner side, each sensing unit of nested arrangement it is firm
Spend and set for increase, so as to which 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.It is and in place
Put in arrangement, also as shown in Figure 2 so that multiple first induction rod, 3 and second induction rod, 4 interlaced arrangements, 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 describing, is referred to as the first stress probe 5 corresponding to the first induction rod 3,
Then it is referred to as the second stress probe 6 with what the second induction rod 4 was connected.
Wherein, the second stress probe 6, which slides, 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 the through holes through the arrangement of the second stress probe 6 are may also set up on the second block 62 so that the second stress probe 6 is also 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 erects
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 that range less sensing unit in inner side is caused to damage.
Correspond to the size of the foregoing induction rod 4 of first induction rod 3 and second, preferable first stress probe 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, vertical height 5cm, and the vertical height of the second block 62 is 3cm, the external diameter then external diameter with the first stress probe 5
Consistent is all 22cm.Certainly, except using above-mentioned each size, the first stress probe 5, the first block 61 and the second block 62 are formed
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 can also use other tools
The metal for having preferable coefficient of elasticity is made, and the first stress probe 5 pops one's head in 6 except the plate-like for annular with the second stress, and 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
, 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 is arranged on instead by the radial transfer pressure detection means of the present embodiment when in use, by stud 2
On power frame, and each foil gauge 7 is connected on external signal collecting device, then can start the detection to pressure, in detection,
In the case of small-range, only as the work of 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 formed 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.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (10)
- A kind of 1. 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, the other end of described device main body is arranged at, the induction mechanism includes multiple The sensing unit with stress probe 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 form 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：By the sensing unit of 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 more annularly arranged uniformly arrange is formed, 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 be connected with first block 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 Unit is answered as nested two set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720699560.XU CN206974575U (en) | 2017-06-15 | 2017-06-15 | Radial transfer pressure detection means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720699560.XU CN206974575U (en) | 2017-06-15 | 2017-06-15 | Radial transfer pressure detection means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206974575U true CN206974575U (en) | 2018-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720699560.XU Expired - Fee Related CN206974575U (en) | 2017-06-15 | 2017-06-15 | Radial transfer pressure detection means |
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| CN (1) | CN206974575U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131985A (en) * | 2017-06-15 | 2017-09-05 | 中国水利水电科学研究院 | Radial transfer pressure detection means |
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2017
- 2017-06-15 CN CN201720699560.XU patent/CN206974575U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131985A (en) * | 2017-06-15 | 2017-09-05 | 中国水利水电科学研究院 | Radial transfer pressure detection means |
| CN107131985B (en) * | 2017-06-15 | 2023-10-31 | 中国水利水电科学研究院 | Spoke type grading pressure detection device |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180206 Termination date: 20210615 |
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| CF01 | Termination of patent right due to non-payment of annual fee |