CN105953893A - Dual-order and dual-precision weighting sensor with adjustment mechanism - Google Patents
Dual-order and dual-precision weighting sensor with adjustment mechanism Download PDFInfo
- Publication number
- CN105953893A CN105953893A CN201610096246.2A CN201610096246A CN105953893A CN 105953893 A CN105953893 A CN 105953893A CN 201610096246 A CN201610096246 A CN 201610096246A CN 105953893 A CN105953893 A CN 105953893A
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- Prior art keywords
- load cells
- supporting part
- precision load
- precision
- dual
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/44—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing persons
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/62—Over or under weighing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/23—Support or suspension of weighing platforms
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
- G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
- G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
- G01G3/1402—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Force In General (AREA)
Abstract
The present invention discloses a dual-order and dual-precision weighting sensor with an adjustment mechanism. The sensor comprises a soleplate, a first precision weighting sensor, a second precision weighting sensor, a support leg, an elastic supporting piece and an adjustment mechanism; the soleplate is provided with an installation plate potion and a guiding force support part configured to transmit the pressured to the installation plate portion; the elastic supporting piece, the first precision weighting sensor, the installation plate portion, the second precision weighting sensor and the support leg are arranged in crimping state in order; and the top end of the elastic supporting piece at the free state is higher than the top end of the guiding force support part, and the top end of the elastic supporting piece is moved downwards when being forced and stressed. The dual-order and dual-precision weighting sensor with the adjustment mechanism has dual-step continuous measuring range and has different precision values in each-step range.
Description
Technical field
The invention belongs to load cell structure design field, be specifically related to a kind of double essence in double rank with governor motion
Degree LOAD CELLS.
Background technology
Body weight electronic scale in the market, its structure mainly includes support board, display screen, regulation button, power module
With the LOAD CELLS composition for supporting support board, its function is mainly used in human body of weighing, and is usually when carrying object
After weight exceedes preset value, display screen just starts to show numerical value, and this preset value is usually 5 kilograms；It addition, this kind of body weight
The maximum range of electronic scale is usually 180 kilograms, and accuracy value only has 100 grams, and error is relatively big, so this traditional body
Weight electronic balancer, on ordinary days in addition to weighing in, substantially cannot function as its use, especially cannot be used for as electronic scale
With.And existing electronic scale, its accuracy value can reach 1 gram the least, but its range is usually no more than 10
Kilogram, use so cannot function as scale.
Summary of the invention
It is an object of the invention to provide a kind of tool that there is the continuous range in double rank and there is in the range of each rank different accuracy value
There is double rank double precision LOAD CELLS of governor motion.
The technical scheme realizing the object of the invention is: a kind of double rank double precision LOAD CELLS with governor motion, including
Mounting seat, the first precision LOAD CELLS, the second precision LOAD CELLS and a spike；It is characterized in that: also include bullet
Property supporting member and governor motion；Described mounting seat is provided with mounting plate portion and for self pressure is passed to mounting plate portion
Power of leading support；Elastic supporting piece, the first precision LOAD CELLS, mounting plate portion, the second precision LOAD CELLS,
Prop up spike and crimp setting successively；Elastic supporting piece includes upper supporting part, spring and lower supporting part；The upper end of spring is connected to
On upper supporting part, the lower end of spring is connected on lower supporting part, and lower supporting part crimping is arranged on the first precision LOAD CELLS
On；The periphery wall of upper supporting part is provided with regulation threaded area, and the periphery wall leading power support top is provided with the annular of evagination
Anti-delinking part；Described governor motion includes regulating gland；The basic configuration of this regulation gland is tubulose, and its underpart is provided with convex
Annular anticreep apical grafting boss, top is provided with the internal threaded regions adaptive with the regulation threaded area of upper supporting part；At spring upwards
Reseting elasticity effect under, regulation gland anticreep apical grafting boss push up the diapire being pressed in the anti-delinking part leading power support all the time
On, the internal threaded regions of regulation gland is screwed onto being positioned on the regulation threaded area on anti-delinking part of upper supporting part；Adjust when rotating
During joint gland, upper supporting part can be driven to move up and down.
In such scheme, the range of the first precision LOAD CELLS is less than the range of the second precision LOAD CELLS.
When the present invention weighs in the first rank range, namely the power pressure contact portion of leading not yet is displaced downwardly to be crimped on and leads on power support
Time, although the first precision LOAD CELLS and the second precision LOAD CELLS stress simultaneously, but the first precision can be utilized to claim
The independent check weighing of weight sensor, namely externally connected with display screen only shows the data that the first precision LOAD CELLS measures, its accuracy value
Being the accuracy value of the first precision LOAD CELLS, general use higher precision, such as accuracy value is 1 gram or less；
When weighing in the second range, namely lead to defeat and meet subordinate and move to be crimped on when leading on power support, although the first precision claims
Weight sensor and the second precision LOAD CELLS stress simultaneously, but the second independent check weighing of precision LOAD CELLS can be utilized,
Namely externally connected with display screen only shows the data that the second precision LOAD CELLS measures, its accuracy value is the second precision weighing and sensing
The accuracy value of device, general uses relatively low precision, and such as accuracy value is 100 grams or bigger；It addition, the present invention is
When weighing in second order range ability, now leading to defeat meeting subordinate and move to be crimped on and lead on power support, spring deformation no longer increases
Add, namely the pressure being applied on the first precision LOAD CELLS is not further added by, thus effectively protect the first precision to weigh biography
Sensor so that it is will not damage because load is overweight；Additionally, the present invention by select spring as the core of elastic supporting piece,
Can make to lead power pressure contact portion by selecting suitable spring and lead there is between power support suitable clearance distance, can
Reduce mounting seat and the requirement on machining accuracy of elastic supporting piece, can guarantee that again comfort during use.
Accompanying drawing explanation
Fig. 1 is that the present invention is in the first rank range and weighs a kind of structural representation of state；
Fig. 2 is that double rank double precision LOAD CELLS shown in Fig. 1 are in second-order range and weigh a kind of structural representation of state；
Fig. 3 is the first precision LOAD CELLS and a kind of blast of lower supporting part in double rank double precision LOAD CELLS shown in Fig. 1
Figure；
Fig. 4 is the first precision LOAD CELLS shown in Fig. 3 and the lower supporting part a kind of explosive view when another angle is observed；
Fig. 5 is the second precision LOAD CELLS and a kind of explosive view of a spike in double rank double precision LOAD CELLS shown in Fig. 1；
Fig. 6 is the second precision LOAD CELLS shown in Fig. 5 and the spike a kind of explosive view when another angle is observed.
Detailed description of the invention
(embodiment 1)
The present embodiment is a kind of double rank double precision LOAD CELLS with governor motion, as shown in Fig. 1 to Fig. 6, including
Mounting seat the 1, first precision LOAD CELLS the 2, second precision LOAD CELLS 3, spike 4, elastic supporting piece 5 and
For regulating the governor motion 6 of elastic supporting piece height.
Described mounting seat is provided with mounting plate portion 11 and for self pressure being passed to power of the leading support of mounting plate portion
12；Elastic supporting piece, the first precision LOAD CELLS, mounting plate portion, the second precision LOAD CELLS, a spike are successively
Crimping is arranged.
Mounting plate portion is horizontally disposed with, and the roof of mounting plate portion is provided with the first deck, and diapire is provided with the second deck.First
The existence of deck and the second deck is so that the installation of the first precision LOAD CELLS and the second precision LOAD CELLS is grasped
Make more rapid and convenient.Power of the leading support 12 of mounting seat is the annular boss projecting upwards formation from mounting plate portion, institute
State the first deck, the first precision LOAD CELLS and elastic supporting piece to be arranged in the cavity 121 that this annular boss surrounds.
This structure makes to lead power support and elastic supporting piece and the first precision LOAD CELLS can be trapped among wherein, props up elasticity
Bearing member and the first precision LOAD CELLS have certain protective effect so that it is be not easily susceptible to extraneous factor interference.
In the present embodiment, the first precision force cell is LOAD CELLS for kitchen use, and its range is 0 to 5 kilogram, essence
Angle value can reach 1 gram；This first precision LOAD CELLS is provided with first fixed part the 21, first load deformations 22 and
The first resistance strain gage 23 for detecting the first load deformations deflection being arranged in the first load deformations；Specifically
For, the shape of described first fixed part be by four edges combination formed rectangular box-like, the shape of the first load deformations
It is to be combined " mountain " font formed, the first load deformation by a base and three straight flanges arranging with this base vertical
Portion is arranged in the rectangle frame of the first fixed part, the end of the center straight flange in three straight flanges of described first load deformations
It is connected with the inner side edge wall of a frame middle-end of the first fixed part.Described first fixed part is fixed on the first deck
In；First load deformations exceeds described mounting plate portion, for its deformation slot milling.This first precision LOAD CELLS
Planform is relatively reasonable, it is easy to by impact style processing and manufacturing, and cost is relatively low.
When being used for manufacturing electronic scale, it is generally required to the double rank double precision LOAD CELLS described in four the present embodiment, namely
The scope of weighing of the first rank range of the electronic scale that employing the present embodiment is made is 0 to 20 kilogram, can meet daily little
The demand that object is weighed.But for the present embodiment, due to only one of which the first precision LOAD CELLS, its first rank
Range is 0 to 5 kilogram.
Elastic supporting piece includes upper supporting part 51, spring 52 and lower supporting part 53；The upper end of spring is connected to upper supporting part
On, the lower end of spring is connected on lower supporting part, and lower supporting part crimping is arranged on the first precision LOAD CELLS.Specifically
For, lower supporting part crimping is arranged in the first load deformations, the first fixed part be installed on mounting plate portion roof the
On one deck, and crimping is arranged in mounting plate portion.The top 50 of elastic supporting piece in free state namely is not stressed
Time exceed the top 120 leading power support, move down during the top pressure-bearing stress of the top of elastic supporting piece namely upper supporting part.
This structure is by arranging upper supporting part, spring and lower supporting part split, it is simple to processing and manufacturing and maintenance are changed.
In the present embodiment, lower supporting part is fixedly installed in the first load deformations by screw connection manner.First load deformation
Portion is provided with two the first fastener holes 221；The bottom of lower supporting part is provided with by two the first screws 222 first tight with this
Gu two fastening screws 531 that hole is fastenedly connected.Specifically, being positioned in described three straight flanges of first load deformations
Two straight flanges of straight flange both sides, center, are respectively provided with first fastener hole 221.This structure is by direct lower supporting part
It is fixedly installed in the first load deformations of the first precision LOAD CELLS, crimps the first load shape realizing lower supporting part
While change portion, also utilizing the first load deformations directly to position lower supporting part, its structure more simplifies rationally.
In concrete practice, it is possible to by anchor mode, lower supporting part is fixed on the first precision LOAD CELLS, such as
The diapire of lower supporting part arranges two downwardly projecting anchor boss, the first load deformations arranges two anchors
Hole, each boss that is anchored passes anchor process after a corresponding anchor hole, and this mode is also effective and feasible.
The top of lower supporting part is provided with annular spacing groove 532 and is positioned at the spacing slide opening in center of annular spacing groove center
533；The diapire of upper supporting part is provided with the annular adaptive with leading power support and leads power pressure contact portion 511, is positioned at annular and leads and defeat
Connect the downward projection of spacing traveller 512 of center, portion；In the spacing slide opening in center that this spacing traveller is positioned at lower supporting part,
And can slide up and down；After lower supporting part pressure-bearing stress is displaced downwardly to a certain degree, it is led power pressure contact portion and is crimped on and leads power support
On, to lead power support and then self pressure is passed to mounting plate portion again, mounting plate portion gives second pressure transmission again
Precision LOAD CELLS.This relatively reasonable in structure, preferably spring can be accurately positioned, prevent its eccentric shifting
Position, it addition, this structure is especially suitable for quickly assembling and later maintenance replacing.It addition, this structure is also fully utilized by
The performance advantage of spring, by selecting suitable spring, so that during free state, upper supporting part leads power pressure contact portion 511
It is in suitably sized with the gap on power of the leading support top 120 of mounting seat, it is generally preferable to be 1 millimeter to 5 millimeters,
Preferably preferred size is 2 millimeters to 3 millimeters, significantly can fall to people when human body weighs sense in excessive gap, because of
Have to be displaced downwardly to be crimped on for power of leading pressure contact portion now and lead on power support, namely move down whole above-mentioned gap size；
Too small gap may require that higher machining accuracy, improves technology difficulty and manufacturing cost.
Mounting seat is additionally provided with in the lower section of mounting plate portion and encloses the holding part 13 forming containing cavity 131, this holding part and installation
Plate portion is made into integration, and the second precision LOAD CELLS and a spike are arranged in this containing cavity, and the bottom of a spike is the most downward
Stretch out this containing cavity.The advantage of this structure is to protect the second precision LOAD CELLS and a spike, anti-
Only it is disturbed by extraneous factor.The present embodiment is to be formed integrally part leading power support, mounting plate portion and holding part,
In concrete practice, it is possible to it is each made split part, is finally assemblied at together, be also feasible.
In the present embodiment, the second precision LOAD CELLS is human body weighing's sensor, and its range is 0 kilogram to 50 kilograms,
Accuracy value is 100 grams；Second precision LOAD CELLS is provided with second fixed part the 31, second load deformations 32 and sets
Put the second resistance strain gage 33 for detecting the second load deformations deflection in the second load deformations.It is being used for
When manufacturing electronic scale, it is generally required to the double rank double precision LOAD CELLS described in four the present embodiment, namely use this enforcement
The scope of weighing of the second-order range of the electronic scale that example is made is 0 to 200 kilogram, can meet the demand of human body weighing.
But for the present embodiment, due to only one of which the second precision LOAD CELLS, its second-order range is 5 to 50 thousand
Gram.
In the present embodiment, the second precision LOAD CELLS is structurally similar to the first precision LOAD CELLS, but at chi
On the thickness of very little and used sheet material bigger than the first precision LOAD CELLS.Specifically, the shape of described second fixed part is
By four edges combination formed rectangular box-like, the shape of the second load deformations be by a base and with this base vertical
" mountain " font that three the straight flange combinations arranged are formed, the second load deformations is arranged in the frame of the second fixed part, institute
State the interior of the end of center straight flange in three straight flanges of the second load deformations and a frame middle-end of the second fixed part
Side wall is connected.The first precision LOAD CELLS and the second precision LOAD CELLS in the present embodiment are suitable for passing through punching press
Mode processing and manufacturing, advantageously reduces manufacturing cost.
Second fixed part is installed in the second deck on mounting plate portion diapire, and the second load deformations is less than described installing plate
Portion, for its deformation slot milling, the second load deformations crimping simultaneously is arranged on the top of a spike.
In the present embodiment, the first precision LOAD CELLS used and the second precision LOAD CELLS may be used without the most widely
Circulation and the cheapest force cell of price, thus effectively reduce manufacturing cost.
In the present embodiment, the basic configuration of a spike is cylindric, and its bottom is provided with rubber slipmat 41.The present embodiment
In spike be fixedly installed on the second precision LOAD CELLS by screw connection manner, specifically, prop up the top of spike
Being provided with two installation screws 42, the second load deformations is provided with two the second fastener holes 321；The top propping up spike is passed through
Two second screws 322 adaptive with installation screw are directly anchored in the second load deformations.In the present embodiment, described
Two straight flanges being positioned at straight flange both sides, center in second load deformations three straight flange, are respectively provided with second fastener hole.
Certainly, described spike also can be fixedly installed in the second load deformations by anchor mode.This structure is realizing
While two load deformations crimping spikes, also utilizing the second load deformations directly to position a spike, its structure is more
Simplify compact.
In the present embodiment, being provided with containing cavity bottom opening at holding part bottom center, this opening part is provided with for blocking accommodating
The capping 15 of chamber bottom opening, is provided with center hole 151 at cap central；The bottom propping up spike extends downwardly from capping
Leave gap between heart circular hole, and periphery wall and the inwall of cap central circular hole of spike, thus ensure mounting seat not with
Prop up spike directly to contact, prevent leading power support and self pressure is directly passed to a spike by holding part, it is ensured that
Lead that power support passes sequentially through mounting plate portion self pressure, the second precision LOAD CELLS passes to spike.Envelope
Lid 15 with holding part with the use of, the first precision LOAD CELLS being pointed in containing cavity is preferably protected.
In the present embodiment, the range of the first precision LOAD CELLS is less than the range of the second precision LOAD CELLS, namely
It is to say that the maximum of the first precision LOAD CELLS value of weighing is less than the maximum of the second precision LOAD CELLS and weighs value, passes through
Choose suitable spring, and select suitable power of leading pressure contact portion and the distance led between power support, can be by the first essence
Degree LOAD CELLS pressure is limited in its range ability, thus prevents the first LOAD CELLS from being pressed because of overweight
Damage；The advantage of this limiter protected mode is: owing to the elastic deformation of strain gauge load cell is the least, such as this reality
The deformation difference in height executed in example in the whole range of the first precision LOAD CELLS is calculated in microns, if using rigid support
Replace the spring in the present embodiment, then the gap between power of leading pressure contact portion and power of the leading support of mounting seat of upper supporting part is also
Must weigh with micron, this is the most too high to requirement on machining accuracy, and in view of the error in materials processing molding and
Material that the temperature difference causes expands change, industrial is difficulty with；If but use spring to amplify deformation, just can effectively have
Effect reduces requirement on machining accuracy and manufacturing cost.
The outer wall of the present embodiment mounting seat is provided with the clamping installation portion 14 for installing self entirety, this clamping installation portion
14 is the wedge shape latch outwardly formed from mounting seat outer wall.The present embodiment in use, general and internal circuit board
With the plastic feet of power module with the use of, the advantage of this structure is, if reserved hole clipping in plastic feet,
Then directly can be installed in hole clipping by this clamping installation portion 14, its assembly operation is very convenient fast.
Upper supporting part is in free state namely when not being stressed, and the top 50 of upper supporting part exceeds the top leading power support
120；Move down during upper supporting part pressure-bearing stress, when upper supporting part pressure-bearing stress is less than 5 kilogram, namely on the first rank
Time in range ability, by selecting suitable spring and selecting suitable power of leading pressure contact portion and lead the spacing of power support,
During so that weigh in this rank range, the power pressure contact portion of leading will not be crimped onto and cause on support, namely upper supporting part bears
Whole pressure, and pass to spring, lower supporting part, the first precision LOAD CELLS, mounting plate portion, the second essence successively
Degree LOAD CELLS and a spike；Show what the first precision LOAD CELLS measured now by external central control circuit
Data, its accuracy value is up to 1 gram；When upper supporting part pressure-bearing stress is less than 50 kilograms and is more than or equal to 5 kilogram,
Namely time in second-order range ability, the power pressure contact portion of leading can be crimped on leads on power support, due to spring pressure not
It is further added by, thus effectively protects the first precision LOAD CELLS will not be because of overweight crushing；Now in upper supporting part pressure,
Having 5 kilograms in concrete practice, this force value may be slightly changed because of machining accuracy error, but not over the first essence
Degree LOAD CELLS maximum load value, from without damage the first precision LOAD CELLS pass to successively spring,
Bearing member, the first precision LOAD CELLS, mounting plate portion, the second precision LOAD CELLS and a spike；Remaining pressure then leads to
Cross the power support of leading and pass to mounting plate portion, the second precision LOAD CELLS and a spike successively；At this moment controlled by central authorities
Circuit shows the data that the second precision LOAD CELLS measures, and its accuracy value only has 100 grams.
The structure design of the present embodiment is relatively reasonable, it is possible to reduces requirement on machining accuracy, reduces manufacturing cost and technology difficulty；
Additionally can also effectively prevent the first precision LOAD CELLS because of overweight and crushing；In addition set on the outer wall of the present embodiment mounting seat
There is the clamping installation portion 14 for installing self entirety, when assembling, can entire card be contained on external plastic feet, operation
Simple and direct facility.
The periphery wall of upper supporting part is provided with regulation threaded area 517, and the periphery wall leading power support top is provided with evagination
Annular anti-delinking part 124；Described governor motion includes regulating gland 61；The basic configuration of this regulation gland is tubulose, under it
Portion is provided with the annular anticreep apical grafting boss 614 of convex, and top is provided with the female thread adaptive with the regulation threaded area of upper supporting part
District 612；Under spring reseting elasticity effect upwards, the anticreep apical grafting boss 614 of regulation gland pushes up all the time and is pressed in the power of leading
On the diapire of the anti-delinking part 124 of support, what the internal threaded regions 612 of regulation gland was screwed onto upper supporting part is positioned at anti-delinking part
On regulation threaded area 517 on 124；When rotating regulation gland, upper supporting part can be driven to move up and down, thus
Adjust the whole height of spring 52, it is achieved the technique effect of regulation elastic supporting piece whole height.
The advantage of this kind of structure is: in concrete practice, and in elastic component, the concordance of spring 52 is difficult to ensure that, due to
Weighing scale and kitchen scale typically can use four double rank double precision LOAD CELLSs simultaneously, and the spring that concordance is difficult to ensure that will
The height that can cause four LOAD CELLSs is slightly distinguished, and impact assembles and uses, and even picks up electronic scale when user and sees
When examining, the most at grade, pole is unsightly in the bottom of each spike；The present embodiment uses governor motion to adjust elasticity
The whole height of bearing member, even if so that the present embodiment uses the slightly larger spring of error, also has only to regulation gland rotation
Forward position to, the concordance of whole height can be ensured.The most this structure compared with Example 2, more simplifies.
Obviously, the above embodiment of the present invention is only for clearly demonstrating example of the present invention, and is not to this
The restriction of the embodiment of invention.For those of ordinary skill in the field, the most also may be used
To make other changes in different forms.Here without also cannot all of embodiment be given exhaustive.And this
Belong to obvious change that the connotation of the present invention extended out a bit or variation still falls within protection scope of the present invention.
Claims (2)
1. there is double rank double precision LOAD CELLS of governor motion, including mounting seat, the first precision weighing and sensing
Device, the second precision LOAD CELLS and a spike；It is characterized in that: also include elastic supporting piece and governor motion；Described
Mounting seat is provided with mounting plate portion and for self pressure being passed to power of the leading support of mounting plate portion；Elastic bearing
Part, the first precision LOAD CELLS, mounting plate portion, the second precision LOAD CELLS, a spike crimp setting successively；
Elastic supporting piece includes upper supporting part, spring and lower supporting part；The upper end of spring is connected on upper supporting part, spring
Lower end be connected on lower supporting part, lower supporting part crimping be arranged on the first precision LOAD CELLS；
The periphery wall of upper supporting part is provided with regulation threaded area, and the periphery wall leading power support top is provided with the annular of evagination
Anti-delinking part；Described governor motion includes regulating gland；The basic configuration of this regulation gland is tubulose, and its underpart is provided with convex
Annular anticreep apical grafting boss, top is provided with the internal threaded regions adaptive with the regulation threaded area of upper supporting part；At spring upwards
Reseting elasticity effect under, regulation gland anticreep apical grafting boss push up the diapire being pressed in the anti-delinking part leading power support all the time
On, the internal threaded regions of regulation gland is screwed onto being positioned on the regulation threaded area on anti-delinking part of upper supporting part；Adjust when rotating
During joint gland, upper supporting part can be driven to move up and down.
Double rank double precision LOAD CELLS with governor motion the most according to claim 1, it is characterised in that:
The range of the first precision LOAD CELLS is less than the range of the second precision LOAD CELLS.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610096246.2A CN105953893A (en) | 2016-01-20 | 2016-01-20 | Dual-order and dual-precision weighting sensor with adjustment mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610096246.2A CN105953893A (en) | 2016-01-20 | 2016-01-20 | Dual-order and dual-precision weighting sensor with adjustment mechanism |
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