CN209278760U - Sensor pre-pressing structure based on external pressure mode - Google Patents
Sensor pre-pressing structure based on external pressure mode Download PDFInfo
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- CN209278760U CN209278760U CN201920020517.5U CN201920020517U CN209278760U CN 209278760 U CN209278760 U CN 209278760U CN 201920020517 U CN201920020517 U CN 201920020517U CN 209278760 U CN209278760 U CN 209278760U
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Abstract
The utility model discloses the sensor pre-pressing structures based on external pressure mode, the measurement for that need to have column rod piece to pass through, and sensor pre-pressing structure includes: the mass block for being provided with central through hole；It is provided with the sensor of central through hole；It is provided with another mass block of central through hole；Sensor is arranged between two mass blocks, and the alignment setting of the central through hole on two mass blocks, the central through hole on sensor；It is connected between two mass blocks by pretensioning mechanism, and by sensor pre-pressing between two mass blocks.The structure of this patent pre-pressing structure is simple, easy to assembly, and is applicable to the measurement situation that column rod piece passes through, and expands the use scope of sensor.
Description
Technical field
The utility model belongs to sensor manufacture and use technical field, and in particular to the sensor based on external pressure mode is pre-
Locking structure.
Background technique
In some kinds of sensor, in piezoelectric force transducer, due to sensing element, when sensor does not have
It is not a linear relationship between the output signal and input physical quantity of sensor, often in the first of curve when applying pretightning force
Beginning section has a certain range of non-linear section, this sensitivity coefficient that will lead to sensor is not a constant, causes to test number
According to inaccuracy, or even it is not available.To solve the above problems, each sensor producer mostly uses and is equipped with pre-pressing structure to sensor,
Pretightning force is applied to sensor, and the size of pretightning force is made to be more than non-linear partial, is made between output signal and input physical quantity
Relationship enter the range of linearity, then linearity range is demarcated, provides sensitivity coefficient, it is whole to be used as finished product.
The application of pretightning force, conventional method are respectively to increase the quality for having centre bore in the upper and lower end face of sensor
Block is inserted into bolt in centre bore, by tightening bolt presses mass block, to pre-tighten to sensor.Using such side
The sensor that method pre-tightens is easy to use in the physical quantity tested between two faces, but for there is column rod piece such as bolt etc. to need guiding through
The case where sensor, is not available then, limits the use scope of sensor.
We has developed the sensor pre-pressing structure based on external pressure mode in order to solve problem above.
Summary of the invention
The purpose of this utility model is that solve the above-mentioned problems and provides the sensor based on external pressure mode and pre-tighten
Structure.
The utility model achieves the above object through the following technical schemes:
Sensor pre-pressing structure based on external pressure mode, the measurement for that need to there is column rod piece to pass through, the pre- tight knot of sensor
Structure includes:
It is provided with a mass block of central through hole；
It is provided with the sensor of central through hole；
It is provided with another mass block of central through hole；Sensor is arranged between two mass blocks, and on two mass blocks
Central through hole, the central through hole on sensor be directed at setting；It is connected, and will be passed by pretensioning mechanism between two mass blocks
Sensor pre-pressing is between two mass blocks.
The structure of this patent pre-pressing structure is simple, easy to assembly, and is applicable to the measurement situation that column rod piece passes through,
Expand the use scope of sensor.
As a preference, pretensioning mechanism includes multiple fastening bolts, and is provided with multiple limit holes on a mass block,
Multiple threaded holes are provided on another mass block, the head of fastening bolt is placed in limit hole, and the bar portion of fastening bolt passes through one
Mass block screws in the threaded hole on another mass block.
By the mating reaction of fastening bolt and threaded hole in pretensioning mechanism, may be implemented to exist sensor pre-pressing
Between two mass blocks.
Further, central through hole of multiple limit holes on a mass block is uniformly distributed；Multiple threaded holes are around another
Central through hole on mass block is uniformly distributed.
Equally distributed multiple limit holes and multiple threaded holes, can make the distribution of power more uniform, avoid to mass block
Or sensor causes structure to destroy, and the end on sensor can also be allowed to be more uniformly stressed.
Still further, threaded hole is through-hole or blind hole.
As another preferred embodiment, pretensioning mechanism includes the fastener that multiple groups are made of fastening bolt and fastening nut, and
Multiple limit holes are provided on two mass blocks, the head of fastening bolt is placed in the limit hole of a mass block, and fastening nut is set
In the limit hole of another mass block, the bar portion of fastening bolt is revolved after sequentially passing through a mass block, another mass block with fastening nut
It is tightly connected.
By the mating reaction of fastening bolt and nut in such pretensioning mechanism, may be implemented sensor pre-pressing
Between two mass blocks.
Further, the central through hole that multiple limit holes on two mass blocks are surrounded respectively on two mass blocks uniformly divides
Cloth, and washer is provided between nut and mass block.
Equally distributed multiple limit holes, can make the distribution of power more uniform, avoid making mass block or sensor
It is destroyed at structure, the end on sensor can also be allowed to be more uniformly stressed.
As a preference, the position connecting on two mass blocks with sensor is provided with pit, the internal diameter of pit
Slightly larger than the outer diameter of sensor, the both ends of sensor are respectively placed in two pits.
Such structure is laid so that playing better positioning action to sensor.
As another preferred embodiment, the both ends of sensor are provided with equipped with center pit, accordingly on two mass blocks
The position connecting with sensor is provided with boss, and the outer diameter of boss is slightly larger than the internal diameter of center pit, on two mass blocks
Boss is respectively placed in two center pits at sensor both ends.
Such structure laying also to play sensor better positioning action.
The utility model has the beneficial effects that:
The sensor pre-pressing structure based on external pressure mode of the utility model:
1, the structure of this patent pre-pressing structure is simple, easy to assembly, and is applicable to the measurement feelings that column rod piece passes through
Condition expands the use scope of sensor.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the embodiments of the present invention 2；
Fig. 3 is the structural schematic diagram of the embodiments of the present invention 2；
Fig. 4 is the structural schematic diagram of the embodiments of the present invention 5 or embodiment 8；
Fig. 5 is the structural schematic diagram of a mass block convex platform in the utility model；
Fig. 6 is the sensor cut-away view in the utility model embodiment 8；
Fig. 7 is the sensor top view in the utility model embodiment 8；
Fig. 8 is the structural schematic diagram of another mass block convex platform in the utility model；
Fig. 9 uses structural schematic diagram for the utility model.
In figure: 1. improve quality block；2. sensor；3. lower mass block；4. fastening bolt；5. lower mass block central through hole；6.
Lower mass block pit；7. block pit of improving quality；8. limiting hole；9. block central through hole of improving quality；10. threaded hole；It is connected on 11.
Part；12. lower connected piece；13 connection bolts；14. attaching nut；15. fastening nut；16. lower mass block boss；17. improving quality
Block boss.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
Embodiment 1, as shown in Fig. 1 and Fig. 9；
Sensor pre-pressing structure based on external pressure mode, the measurement for that need to there is column rod piece to pass through, the pre- tight knot of sensor
Structure includes:
It is provided with the block 1 of improving quality of central through hole；
It is provided with the sensor 2 of central through hole；
It is provided with the lower mass block 3 of central through hole；The setting of sensor 2 is being improved quality between block 1 and lower mass block 3, and on
Mass block central through hole 9, lower mass block central through hole 5, the central through hole on sensor 2 are directed at setting；It improves quality block 1 and lower matter
It is connected between gauge block 3 by pretensioning mechanism, and 2 pre-pressing of sensor is being improved quality between block 1 and lower mass block 3.
The sensor 2 for having preload that this patent is installed among connected piece 11 and lower connected piece 12 is wherein gone up, by passing through
The connection bolt 13 of sensor 2 and attaching nut 14 connect, and can measure the power between two connectors.
The structure of this patent pre-pressing structure is simple, easy to assembly, and is applicable to the measurement situation that column rod piece passes through,
Expand the use scope of sensor 2.
Embodiment 2,；
The present embodiment the difference from embodiment 1 is that: pretensioning mechanism includes multiple fastening bolts 4, and in a mass block
On be provided with multiple limit holes 8, be provided with multiple threaded holes 10 on another mass block, the head of fastening bolt 4 is placed in limit hole 8
In, the bar portion of fastening bolt 4 passes through a mass block and screws in the threaded hole 10 on another mass block.
By the mating reaction of fastening bolt 4 and threaded hole 10 in pretensioning mechanism, may be implemented 2 precompressed of sensor
Tightly between two mass blocks, concrete operations tighten fastening bolt 4 to be a degree of.
Embodiment 3；
The present embodiment the difference from example 2 is that: central through holes of multiple limit holes on the mass block are uniformly distributed；
Central through hole of multiple threaded holes on another mass block is uniformly distributed.
Equally distributed multiple limit holes and multiple threaded holes, can make the distribution of power more uniform, avoid to mass block
Or sensor 2 causes structure to destroy, and the end on sensor 2 can also be allowed to be more uniformly stressed.
Embodiment 4；
The present embodiment the difference from example 2 is that: threaded hole be through-hole or blind hole.
Embodiment 5, as shown in Figure 4；
The present embodiment the difference from embodiment 1 is that: pretensioning mechanism includes multiple groups by fastening bolt 4 and fastening nut 15
The fastener of composition, and multiple limit holes are provided on two mass blocks, the head of fastening bolt 4 is placed in the limit of a mass block
Kong Zhong, fastening nut 15 are placed in the limit hole of another mass block, and the bar portion of fastening bolt 4 sequentially passes through a mass block, Ling Yizhi
It screws and connect with fastening nut 15 after gauge block.
By the mating reaction of fastening bolt 4 and nut in such pretensioning mechanism, may be implemented 2 precompressed of sensor
Tightly between two mass blocks, concrete operations tighten fastening bolt 4 to be a degree of.
Embodiment 6；
The present embodiment and the difference of embodiment 5 are: multiple limit holes on two mass blocks surround two mass blocks respectively
On central through hole be uniformly distributed, and washer is provided between nut and mass block.
Equally distributed multiple limit holes, can make the distribution of power more uniform, avoid making mass block or sensor 2
It is destroyed at structure, the end on sensor 2 can also be allowed to be more uniformly stressed.
Embodiment 7, as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 9；
The present embodiment is with the difference of any one of embodiment 1-6: at the position connecting on block 1 with sensor 2 of improving quality
It is provided with block pit 7 of improving quality, the position connecting on lower mass block 3 with sensor 2 is provided with lower mass block pit 6, upper matter
The internal diameter of gauge block pit 7 and lower mass block pit 6 is slightly larger than the outer diameter of sensor 2, and the both ends of sensor 2 are respectively placed in mass block
In pit and lower mass block pit 6.
Such structure is laid so that playing better positioning action to sensor 2.
Embodiment 8, as shown in Fig. 4-Fig. 8；
The difference of the present embodiment and any one of embodiment 1-6 is: the both ends of sensor 2 are provided with equipped with central fovea
Hole, the position accordingly connecting on two mass blocks with sensor 2 are provided with boss, and the outer diameter of boss is slightly larger than central fovea
The internal diameter in hole, the boss on two mass blocks are respectively placed in two center pits at 2 both ends of sensor.Lower matter is shown in figure
Gauge block boss 16, block boss 17 of improving quality.
Embodiment 9, the utility model can be used for the case where no column rod piece is across sensor 2, at this time two quality
Central through hole on block, sensor 2 can remove.
The basic principles and main features and advantage of the utility model have been shown and described above.The technical staff of the industry
It should be appreciated that the present utility model is not limited to the above embodiments, the above embodiments and description only describe this
The principle of utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various change
And improvement, these various changes and improvements fall within the scope of the claimed invention.The utility model requires protection scope
It is defined by appending claims and equivalents.
Claims (8)
1. the sensor pre-pressing structure based on external pressure mode, the measurement for that need to there is column rod piece to pass through, which is characterized in that sensing
Device pre-pressing structure includes:
It is provided with a mass block of central through hole；
It is provided with the sensor of central through hole；
It is provided with another mass block of central through hole；Sensor be arranged between two mass blocks, and on two mass blocks in
Central through hole on heart through-hole, sensor is directed at setting；It is connected between two mass blocks by pretensioning mechanism, and by sensor
Pre-pressing is between two mass blocks.
2. the sensor pre-pressing structure according to claim 1 based on external pressure mode, it is characterised in that: pretensioning mechanism packet
Multiple fastening bolts are included, and are provided with multiple limit holes on a mass block, multiple threaded holes are provided on another mass block, tightly
The head of fixing bolt is placed in limit hole, and the bar portion of fastening bolt passes through a mass block and screws in the threaded hole on another mass block.
3. the sensor pre-pressing structure according to claim 2 based on external pressure mode, it is characterised in that: multiple limit holes surround
Central through hole on one mass block is uniformly distributed；Central through hole of multiple threaded holes on another mass block is uniformly distributed.
4. the sensor pre-pressing structure according to claim 2 based on external pressure mode, it is characterised in that: threaded hole is through-hole
Or blind hole.
5. the sensor pre-pressing structure according to claim 1 based on external pressure mode, it is characterised in that: pretensioning mechanism packet
The fastener that multiple groups are made of fastening bolt and fastening nut is included, and is provided with multiple limit holes on two mass blocks, is fastened
The head of bolt is placed in the limit hole of a mass block, and fastening nut is placed in the limit hole of another mass block, the bar portion of fastening bolt
It sequentially passes through to screw with fastening nut after a mass block, another mass block and connect.
6. the sensor pre-pressing structure according to claim 5 based on external pressure mode, it is characterised in that: on two mass blocks
The central through hole that is surrounded on two mass blocks respectively of multiple limit holes be uniformly distributed, and pad is provided between nut and mass block
Circle.
7. the sensor pre-pressing structure according to claim 1-6 based on external pressure mode, it is characterised in that: two
The position connecting on a mass block with sensor is provided with pit, and the internal diameter of pit is slightly larger than the outer diameter of sensor, sensor
Both ends be respectively placed in two pits.
8. the sensor pre-pressing structure according to claim 1-6 based on external pressure mode, it is characterised in that: sensing
The both ends of device are provided with equipped with center pit, and the position accordingly connecting on two mass blocks with sensor is provided with convex
Platform, the outer diameter of boss are slightly larger than the internal diameter of center pit, and the boss on two mass blocks is respectively placed in two of sensor both ends
In the pit of center.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920020517.5U CN209278760U (en) | 2019-01-07 | 2019-01-07 | Sensor pre-pressing structure based on external pressure mode |
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| CN201920020517.5U CN209278760U (en) | 2019-01-07 | 2019-01-07 | Sensor pre-pressing structure based on external pressure mode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854875A (en) * | 2019-01-07 | 2019-06-07 | 中国工程物理研究院总体工程研究所 | Sensor pre-pressing structure based on external pressure mode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854875A (en) * | 2019-01-07 | 2019-06-07 | 中国工程物理研究院总体工程研究所 | Sensor pre-pressing structure based on external pressure mode |
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