CN205981504U - Split type two -dimentional force transducer - Google Patents
Split type two -dimentional force transducer Download PDFInfo
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- CN205981504U CN205981504U CN201620751132.2U CN201620751132U CN205981504U CN 205981504 U CN205981504 U CN 205981504U CN 201620751132 U CN201620751132 U CN 201620751132U CN 205981504 U CN205981504 U CN 205981504U
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- rectangular cross
- screw rod
- screw
- split type
- foil gauge
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- 239000011888 foil Substances 0.000 claims abstract description 32
- 238000012360 testing method Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 238000012790 confirmation Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000013142 basic testing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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Abstract
The utility model discloses a split type two -dimentional force transducer belongs to the sensor technology field. Including the connector, rectangular cross section roof beam, cavity cylindric component. The top of rectangular cross section roof beam has a first screw, and the bottom has a second screw, pastes a pair of first foil gage at least on relative first side and the second side, the connector bottom is provided with the first screw matched with connecting screw rod with the rectangular cross section roof beam, the top of cavity cylindric component has the outwardly directed screw rod of going up, and the bottom has outwardly directed screw rod down, and open the side has the wire guide, and at least a pair of second foil gage is pasted to the bottom internal surface, and the wire of second foil gage is drawn forth from the wire guide, the second screw of going up screw rod and rectangular cross section roof beam cooperatees to fixed cavity cylindric component and rectangular cross section roof beam, the screw rod is fixed is down surveyed the structure thing. This split type two -dimentional force transducer simple structure, volume are light and handy, can be used to the multidimension atress test of structure thing under the centrifugal model testing condition.
Description
Technical field
This utility model is related to a kind of force cell and in particular to a kind of split type 2 D force sensor, can be used for from
The multidimensional forces testing of works under the conditions of heart model test.
Background technology
Multi-dimension force sensor is a kind of force transducer that can simultaneously measure the above power of both direction and moment components, extensively
Be applied to robot, automatically control, industry manufactures, civil engineering etc. field.In geotechnical centrifugal model test, it usually needs
The stress of works in the soil body is measured, thus directly obtaining response under various operating modes for the works.Due to soil body bar
Part is complicated and deformation pattern is varied, and works are often subject to the load action of multiple directions it is necessary to adopt various dimensions
Force transducer is tested.Different from general sensor for the sensor on centrifugal machine model trial, suffered CENTRIFUGAL ACCELERATING
Degree very high, measurement sensor must on the premise of meeting basic test precision index, to the use environment of itself, structure,
Volume, measuring accuracy etc. propose requirements at the higher level.About the research of multi-dimension force sensor, multiple patented technologies are formed, such as CN
2066134U discloses cylindrical shape up-down structure six-dimensional force/torque sensor in, has the advantages that high precision, easy processing, but
This structure radial-axial size is larger.CN 101329207A patent discloses a kind of multidigit force transducer of bilayer up-down structure,
This sensor adopt Stewart formula parallel-connection structure, improve precision, but structure be not compact, volume larger it is difficult to install.CN
202281665U patent discloses a kind of cantilever beam type two-dimensional force transducer, can measure size and the side of two dimensional surface internal force
To, but complex structure, range is not greatly it is impossible to bear high torque.This kind of sensor common configuration is complicated, not easy to install；Body
Long-pending and quality is larger, can directly affect Centrifugal Model Test Result；And larger moment of torsion can not be born.Even technology is more ripe
German ME multi-dimension force sensor, there is also same shortcoming, when its range be 500N～5kN, volume up to 120mm ×
120mm × 30mmm or bigger, weight all 2kg and above it is difficult to meet centrifugal model test requirement.
Content of the invention
The purpose of this utility model is for the deficiencies in the prior art, provides a kind of split type 2 D force sensor, knot
Structure is simple, can resist high torque, and can change range according to demand it is ensured that certainty of measurement.
The purpose of this utility model is achieved through the following technical solutions：A kind of split type 2 D force sensor, bag
Include union joint, rectangular cross section beam and hollow barrel-type component；The top of described rectangular cross section beam has the first screw, and bottom has
Two screws, relative first side and second side are pasted at least one pair of first foil gauge；Described union joint bottom is provided with
The connecting screw rod matching with the first screw of rectangular cross section beam；The top of described hollow barrel-type component has on outwardly directed
Screw rod, bottom has outwardly directed lower screw rod, and side has wire guide, and bottom interior surface pastes at least one pair of second strain
Piece, the wire of the second foil gauge is drawn from wire guide；Described upper screw rod is matched with the second screw of rectangular cross section beam, thus
Fixing hollow barrel-type component and rectangular cross section beam；Lower screw rod fixes tested works.
Further, described union joint, rectangular cross section beam and hollow barrel-type component are made using aluminum alloy materials.
Further, described rectangular cross section beam and hollow barrel-type component do not allow to occur plasticity to become in process of the test
Shape.
Further, described first screw and the second screw are on same axis.
Further, each pair first foil gauge is symmetrically placed in first side and second side, and its quantity can be cut according to rectangle
The length of face beam is adjusted, and position need to meet Saint Venant's principle.
Further, described union joint can be replaced according to test demand screw rod.
Further, adopt favour stone full-bridge circuit between described first foil gauge and each pair foil gauge of the second foil gauge
Connect.
Further, described rectangular cross section beam top can arrange scale, conveniently confirms tested works and the first foil gauge
Between distance.
Compared with prior art, the beneficial effects of the utility model are：
(1) structure of the present utility model is simple, can resist high torque, and can change range according to demand.
(2) this sensor data acquisition and signal processing are simple, and certainty of measurement is higher.
(3) this sensor mass is relatively light, small volume, easily install, and can meet centrifugal machine model trial to sensor
Require.
(4) this equipment principle is simple, and cost of implementation is low, and using effect is good, is easy to promote the use of.
Brief description
Fig. 1 is the structural representation of 2 D force sensor of the present utility model, and (a) is axonometric chart, and (b) is side view；
In figure：Union joint 1；Rectangular cross section beam 2；First screw 2-1；Second screw 2-2；Hollow barrel-type component 3；Upper screw rod
3-1；Lower screw rod 3-2；Wire guide 3-3；First foil gauge 4-1；Second foil gauge 4-2.
Specific embodiment
With reference to the accompanying drawings and examples this utility model is described in further detail.
As shown in figure 1, a kind of split type 2 D force sensor that this utility model provides, including union joint 1, square-section
Beam 2 and hollow barrel-type component 3.This union joint 1, rectangular cross section beam 2 and hollow barrel-type component 3 can adopt aluminum alloy materials system
Become.
The top of described rectangular cross section beam 2 has the first screw 2-1, and bottom has the second screw 2-2, described first screw
2-1 and the second screw 2-2 is on same axis；Paste in relative first side 2-3 and second side 2-4 at least one pair of
One foil gauge 4-1, each pair the first foil gauge 4-1 is symmetrically placed in first side 2-3 and second side 2-4, and its quantity can be according to square
The length of tee section beam 2 is adjusted, and foil gauge 4-1 arrangement need to meet Saint Venant's principle.Can set on described rectangular cross section beam 2
Put scale, distance between the tested works of convenient confirmation and the first foil gauge 4-1.
Described union joint 1 is a hollow cylinder, and for connecting reaction beam, this structure can be replaced according to test demand screw rod
Change；Described union joint 1 bottom is provided with the connecting screw rod matching with the first screw 2-1 of rectangular cross section beam 2.
The top of described hollow barrel-type component 3 has outwardly directed upper screw rod 3-1, and bottom has outwardly directed lower spiral shell
Bar 3-2, side has wire guide 3-3, and bottom interior surface pastes at least one pair of second foil gauge 4-2, and the second foil gauge 4-2 leads
Line is drawn from wire guide 3-3；Described upper screw rod 3-1 is matched with the second screw 2-2 of rectangular cross section beam 2, thus in fixing
Empty Cylinder shape constructional element 3 and rectangular cross section beam 2；Lower screw rod fixes the tested works of 3-2.
Favour stone full-bridge circuit is adopted even between described first foil gauge 4-1 and each pair foil gauge of the second foil gauge 4-2
Connect.
Described rectangular cross section beam 2 and hollow barrel-type component 3 do not allow plastic deformation in process of the test.
This split type 2 D force sensor action principle is as follows：
Rectangular cross section beam 2 according to the test requirements document suitable range of selection and size and hollow barrel-type component 3.To post should
Become the rectangular cross section beam 2 of piece, this three part of hollow barrel-type component 3 and union joint 1 is assembled, and is connected with external member；Its
Middle union joint 1 is fixed with reaction frame, and hollow barrel-type component 3 is connected with tested works.
In process of the test, this split type 2 D force sensor can be used for measuring the Z-direction of tested works and being subject to of Y-direction
Power.When rectangular cross section beam 2 and hollow barrel-type component 3 deform, top strain sheet resistance also can occur to change accordingly, this resistance
Changing value can characterize the stress size of tested works.
Due to rectangular cross section beam 2 Z-direction thickness be much larger than Y-direction thickness, the therefore effect to Y-direction for this component
Power is sensitive, insensitive to the active force of Z-direction, can measure the stress of Y-direction.And hollow barrel-type component 3 is in the deformation of Z-direction
Much larger than the deformation of Y-direction, the therefore force-sensitive of its Z-direction, insensitive to the active force of Y-direction, Y-direction can be measured
Stress.
This split type 2 D force sensor using before need to be demarcated, draw calibration matrix, by this matrix can counter push away by
The stress of geodesic structure thing.
Shown in calibration matrix such as formula (1)：
In formula：N, M represent vertical force, moment of flexure, corresponding U respectivelyNAnd UMRespectively axle power meter, moment of flexure foil gauge are corresponding
Magnitude of voltage variable quantity.
KNNWhen moment of flexure is for definite value, when changing N, the magnitude of voltage variable quantity of axle power meter；
KNMWhen vertical force is for definite value, when changing M, the magnitude of voltage variable quantity of axle power meter；
KMNWhen moment of flexure is for definite value, when changing N, the magnitude of voltage variable quantity of moment of flexure foil gauge；
KMMWhen vertical force is for definite value, when changing moment of flexure, the magnitude of voltage variable quantity of moment of flexure foil gauge.
Claims (8)
1. a kind of split type 2 D force sensor is it is characterised in that include union joint (1), rectangular cross section beam (2) and hollow barrel-type
Component (3)；The top of described rectangular cross section beam (2) has the first screw (2-1), and bottom has the second screw (2-2), relative
At least one pair of first foil gauge (4-1) is pasted on first side (2-3) and second side (2-4)；Described union joint (1) bottom sets
It is equipped with the connecting screw rod matching with first screw (2-1) of rectangular cross section beam (2)；The top of described hollow barrel-type component (3)
There is outwardly directed upper screw rod (3-1), bottom has outwardly directed lower screw rod (3-2), side has wire guide (3-3),
Bottom interior surface pastes at least one pair of second foil gauge (4-2), and the wire of the second foil gauge (4-2) draws from wire guide (3-3)
Go out；Described upper screw rod (3-1) is matched with second screw (2-2) of rectangular cross section beam (2), thus fixing hollow barrel-type component
And rectangular cross section beam (2) (3)；Lower screw rod (3-2) fixes tested works.
2. a kind of split type 2 D force sensor according to claim 1 is it is characterised in that described union joint (1), rectangle
Cut section bar (2) and hollow barrel-type component (3) is made using aluminum alloy materials.
3. a kind of split type 2 D force sensor according to claim 1 is it is characterised in that described rectangular cross section beam (2)
And hollow barrel-type component (3) does not allow plastic deformation in process of the test.
4. a kind of split type 2 D force sensor according to claim 1 is it is characterised in that described first screw (2-1)
With the second screw (2-2) on same axis.
5. a kind of split type 2 D force sensor according to claim 1 is it is characterised in that each pair the first foil gauge (4-
1) it is symmetrically placed in first side (2-3) and second side (2-4), its quantity can be adjusted according to the length of rectangular cross section beam (2)
Whole, position need to meet Saint Venant's principle.
6. a kind of split type 2 D force sensor according to claim 1 is it is characterised in that described union joint (1) can root
Replace according to test demand screw rod.
7. a kind of split type 2 D force sensor according to claim 1 is it is characterised in that described first foil gauge (4-
1) favour stone full-bridge circuit is adopted to connect between each pair foil gauge of and the second foil gauge (4-2).
8. a kind of split type 2 D force sensor according to claim 1 is it is characterised in that described rectangular cross section beam (2)
Top can arrange scale, distance between the tested works of convenient confirmation and the first foil gauge (4-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620751132.2U CN205981504U (en) | 2016-07-14 | 2016-07-14 | Split type two -dimentional force transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620751132.2U CN205981504U (en) | 2016-07-14 | 2016-07-14 | Split type two -dimentional force transducer |
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| Publication Number | Publication Date |
|---|---|
| CN205981504U true CN205981504U (en) | 2017-02-22 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620751132.2U Active CN205981504U (en) | 2016-07-14 | 2016-07-14 | Split type two -dimentional force transducer |
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| Country | Link |
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| CN (1) | CN205981504U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092391A (en) * | 2016-07-14 | 2016-11-09 | 浙江大学 | A kind of split type 2 D force sensor |
-
2016
- 2016-07-14 CN CN201620751132.2U patent/CN205981504U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092391A (en) * | 2016-07-14 | 2016-11-09 | 浙江大学 | A kind of split type 2 D force sensor |
| CN106092391B (en) * | 2016-07-14 | 2019-05-07 | 浙江大学 | A kind of split type 2 D force sensor |
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