CN206832385U - 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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- CN206832385U CN206832385U CN201720699582.6U CN201720699582U CN206832385U CN 206832385 U CN206832385 U CN 206832385U CN 201720699582 U CN201720699582 U CN 201720699582U CN 206832385 U CN206832385 U CN 206832385U
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- dynamometry
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- ring
- measuring range
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Abstract
The utility model 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 positioned at most in the 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.Stagewise high precision and large measuring range pressure-detecting device 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 stagewise high precision and large measuring range pressure inspection
Survey device.
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 has turned 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, 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；2. use
The larger load measurement device of range, it 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, it is 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.
Utility model content
In view of this, the utility model is directed to a kind of stagewise high precision and large measuring range pressure-detecting device, to solve
The problem of conventional load measurement apparatus can not meet precision and range requirement simultaneously in existing large geotechnical experiment.
To reach above-mentioned purpose, what the technical solution of the utility model was realized in：
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, the other end of described device main body is arranged at, 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, and arranged for interval between adjacent each dynamometry head are respectively fixed with the opposite side of each proving ring；
Displacement detecting mechanism, positioned at most in the proving ring of inner side, and being 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 reduces successively.
Further, the corresponding projection arranged and groove, the projection are provided with the two dynamometry heads of arbitrary neighborhood
It can be embedded at together because of the press-in displacement for the dynamometry ring described device body side arranged in the outer part with groove.
Further, described raised on the dynamometry head arranged in the inner part, 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 the adjacent dynamometry head is adjustable.
Further, in the side that the proving ring and described device main body are connected, between the adjacent proving ring
It is folded with backing plate.
Further, the displacement detecting mechanism is dial gauge.
Relative to prior art, the utility model has the advantage that：
Stagewise high precision and large measuring range pressure-detecting device of the present utility model passes through the force measuring machine with multiple proving rings
The setting of structure, can by multiple proving rings progressively, cooperate, the common measurement work for completing load numerical value；It is less in load
Starting stage, only it can be worked by the less proving ring of single rigidity, to effectively improve measurement accuracy, and with the increase of load,
It can progressively participate in cooperating by the proving ring of different-stiffness, to cope with wide range dynamometry, and can effectively avoid small firm
The problem of spending 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 stagewise high precision and large measuring range pressure-detecting device described in the utility model embodiment
Figure；
Description of reference numerals：
1- fixed plates, 2- studs, the small rigidity proving rings of 3-, rigidity proving ring in 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 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 stagewise high precision and large measuring range pressure-detecting device is the utility model is related to, it includes one end and is provided with fixed part
Apparatus main body, and be arranged at relative to fixed part the force measuring machine of the other end of apparatus main body, the force measuring machine has one
Side is fixed on apparatus main body and is nested in multiple proving rings together, and relative to the side being connected with apparatus main body, each
The opposite side of proving ring is also respectively fixed with dynamometry head, and arranged for interval between adjacent each dynamometry head.Of the present utility model point
Level formula high precision and large measuring range pressure-detecting device is also included positioned at most in the proving ring of inner side, and the position being fixed on apparatus main body
Move testing agency, the dynamometry head that the test side of the displacement detecting mechanism is run through on each proving ring of inner side, and and 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.
Stagewise high precision and large measuring range pressure-detecting device of the present utility model passes through the force measuring machine with multiple proving rings
The setting of structure, can by multiple proving rings progressively, cooperate, the common measurement work for completing load numerical value is less in load
Starting stage, only it can be worked by the less proving ring of single rigidity, to effectively improve measurement accuracy, and with the increase of load,
It can progressively participate in cooperating by the proving ring of different-stiffness, to cope with wide range dynamometry, and can effectively avoid small firm
The problem of spending proving ring range deficiency.
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 arranged to be nested in together three progress with the proving ring in force measuring machine
Illustrate, and the apparatus structure and its working mechanism when proving ring uses other quantity be with described below identical, the present embodiment will
No longer repeated.In the present embodiment, foregoing apparatus main body is block fixed plate 1, the fixation being arranged 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.
A kind of applicating example is used as 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 are 21cm, thickness 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, and the bolt for fixing each proving ring is arranged in each backing plate 6, 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
The tangent setting of side face, and being then connected on the medial surface of proving ring positioned at the both ends of platy structure of inner side, and in order to beneficial to
Clamping to proving ring, a chondritic is also equipped between the platy structure and proving ring of inner side, passes through the chondritic
Realize the abutting to proving ring.Between bolt for fixing dynamometry first 7 just wears the platy structure for being connected to both sides, 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 provides
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 it is arc-shaped that groove 9 is then corresponding.
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
8 are played in dynamometry first 7 in the inner part, and causes groove 9 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 most inside the 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 the through hole through arrangement is provided with 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
Degree proving ring 4 and small rigidity proving ring 3 by backing plate 6 and are bolted in fixed plate 1, then install dynamometry on each proving ring
First 7, then detection means is arranged on reaction frame by stud 2, checks the center of each proving ring and each dynamometry first 7 at one
After on straight line, then dial gauge 10 is installed, and the reading of dial gauge 10 is returned to zero, pressure detecting can be carried out.
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, avoid small rigidity proving ring range not
The problem of sufficient.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 are identical with existing dynamometry ring mechanism.
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. 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, the other end of described device main body is arranged at, the force measuring machine has side Be fixed in described device main body and be nested in multiple proving rings together, relative to described device main body be connected side, Dynamometry head, and arranged for interval between adjacent each dynamometry head are respectively fixed with the opposite side of each proving ring；Displacement detecting mechanism, positioned at most in the proving ring of inner side, and being 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 with the outermost survey The dynamometry head on power ring, which abuts, 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 The proving ring is outside, and the rigidity of each proving ring reduces successively.
- 5. stagewise high precision and large measuring range pressure-detecting device according to claim 1, it is characterised in that：In arbitrary neighborhood The two dynamometry heads be provided with the projection and groove of corresponding arrangement, the 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 exist In：The displacement detecting mechanism is dial gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720699582.6U CN206832385U (en) | 2017-06-15 | 2017-06-15 | Stagewise high precision and large measuring range pressure-detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720699582.6U CN206832385U (en) | 2017-06-15 | 2017-06-15 | Stagewise high precision and large measuring range pressure-detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206832385U true CN206832385U (en) | 2018-01-02 |
Family
ID=60776060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720699582.6U Expired - Fee Related CN206832385U (en) | 2017-06-15 | 2017-06-15 | Stagewise high precision and large measuring range pressure-detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206832385U (en) |
-
2017
- 2017-06-15 CN CN201720699582.6U patent/CN206832385U/en not_active Expired - Fee Related
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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: 20180102 Termination date: 20210615 |
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| CF01 | Termination of patent right due to non-payment of annual fee |