CN105953898A - Adjustable dual-order and dual-precision weighting sensor - Google Patents
Adjustable dual-order and dual-precision weighting sensor Download PDFInfo
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- CN105953898A CN105953898A CN201610096281.4A CN201610096281A CN105953898A CN 105953898 A CN105953898 A CN 105953898A CN 201610096281 A CN201610096281 A CN 201610096281A CN 105953898 A CN105953898 A CN 105953898A
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- load cells
- precision load
- supporting part
- precision
- contact portion
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- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/23—Support or suspension of weighing platforms
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- General Physics & Mathematics (AREA)
- Measurement Of Force In General (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention discloses an adjustable dual-order and dual-precision weighting sensor. 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 configured to adjust the height of the elastic supporting piece; 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 adjustable pair of rank double precision and weigh
Sensor.
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 have the continuous range in double rank and there is in the range of each rank different accuracy value can
Double rank double precision LOAD CELLS of regulation.
The technical scheme realizing the object of the invention is: a kind of adjustable pair of rank double precision LOAD CELLS, including mounting seat,
First precision LOAD CELLS, the second precision LOAD CELLS, spike, elastic supporting piece and be used for regulating elastic bearing
The governor motion of part height；Described mounting seat is provided with mounting plate portion and for self pressure is passed to mounting plate portion
Lead power support；Elastic supporting piece, the first precision LOAD CELLS, mounting plate portion, the second precision LOAD CELLS,
Spike crimps setting successively；Elastic supporting piece includes upper supporting part, spring and lower supporting part；The upper end of spring is connected to
On supporting member, the lower end of spring is connected on lower supporting part, and lower supporting part crimping is arranged on the first precision LOAD CELLS；
The diapire of upper supporting part is provided with leads power pressure contact portion, leads power pressure contact portion and exceeds the top leading power support when free state；
The periphery wall of upper supporting part is provided with the stopper section of evagination, and the periphery wall leading power support is provided with external screw thread district；Regulation machine
Structure includes regulating gland and elastomeric pad；The upper end of this regulation gland is provided with the anticreep pressure contact portion of annular, and lower end inner wall sets
Having the internal threaded regions adaptive with leading power support external screw thread district, middle-end is provided with electrolysis；Regulation gland is by this electrolysis handle
Elastomeric pad is crimped on leads on power support top, and described anticreep pressure contact portion is set in being positioned at above stopper section of upper supporting part
Outer wall on, under free state, under the elastic force effect of spring, anticreep pressure contact portion is crimped on stopper section.
In such scheme, the aperture of described elastomeric pad central bore is more than the external diameter of the stopper section of upper supporting part；In external force
Under effect, described stopper section slides up and down between power support top at anticreep pressure contact portion and leading；Upper supporting part pressure-bearing is subject to
When power is to predeterminable level, lead to defeat meeting subordinate and move to be crimped on and lead on power support.
In such scheme, the aperture of elastomeric pad central bore is less than the external diameter of the stopper section of upper supporting part；At External Force Acting
Under, described stopper section slides up and down between anticreep pressure contact portion and elastomeric pad roof；Upper supporting part pressure-bearing stress is in advance
If during degree, lead to defeat meeting subordinate and move to be crimped on elastomeric pad.
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 first structure of 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 a kind of perspective view on double rank double precision LOAD CELLS shown in Fig. 1；
Fig. 4 is a kind of explosive view on double rank double precision LOAD CELLS shown in Fig. 3；
Fig. 5 is a kind of explosive views when another angle is observed of double rank double precision LOAD CELLS shown in Fig. 3；
Fig. 6 is that the second structure of the present invention is in the first rank range and weighs a kind of structural representation of state；
Fig. 7 is that double rank double precision LOAD CELLS shown in Fig. 6 are in second-order range and weigh a kind of structural representation of state.
Detailed description of the invention
(embodiment 1)
The present embodiment is a kind of adjustable pair of rank double precision LOAD CELLS, as shown in Fig. 1 to Fig. 5, including mounting seat
1, first precision LOAD CELLS the 2, second precision LOAD CELLS 3, spike 4, elastic supporting piece 5 and be used for adjusting
The governor motion 6 of joint 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 shape of the second precision LOAD CELLS is similar to instead " G " font, and its second fixed part approximates
" C " font, the shape of the second load deformations is similar to less " C " font, and with the second fixed part phase
Even, combination forms anti-" G " font.The first precision LOAD CELLS in the present embodiment and the second precision LOAD CELLS
It is suitable for, by impact style processing and manufacturing, advantageously reducing 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.
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；Capping includes that interior cover region 152, outer cover region 153 and the interior cover region of connection and outer cover region are many
Bar spiral elastic arm 154, is provided with center hole 151 at inner cap district center；The bottom propping up spike extends downwardly from the center of capping
Circular hole, and the inwall of the periphery wall of spike and cap central circular hole is adhesively fixed.Owing to spiral elastic arm can be made foot
Enough tiny, this kind of structure can fully reduce a power passing through capping between spike outer wall and mounting seat and transmit so that it is causes
Error affect for the precision in second-order range, reach the degree ignored.
Capping 15 with holding part with the use of, the second precision LOAD CELLS being pointed in containing cavity is preferably protected
Protect.
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.
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.
In the present embodiment, the periphery wall of upper supporting part is provided with the stopper section 513 of evagination, leads on the periphery wall of power support
It is provided with external screw thread district 122；Governor motion includes regulating gland 61 and elastomeric pad 62；The upper end of this regulation gland is provided with
The anticreep pressure contact portion 611 of annular, lower end inner wall is provided with and leads the internal threaded regions 612 that power support external screw thread district is adaptive,
Middle-end is provided with electrolysis 613；Regulation gland is crimped on elastomeric pad by this electrolysis leads on power support top, institute
State anticreep pressure contact portion and be set in being positioned on the outer wall above stopper section, under free state, at the elastic force of spring of upper supporting part
Under effect, anticreep pressure contact portion is crimped on stopper section；Under external force, described stopper section can be at anticreep pressure contact portion and leading
Power support slides up and down between top.
In the present embodiment, the aperture of described elastomeric pad 62 central bore is more than the external diameter of the stopper section 513 of upper supporting part,
Thus do not affect moving up and down of upper supporting part；In concrete practice, it is possible to the aperture of elastomeric pad 62 central bore
It is made the external diameter of the stopper section 513 less than upper supporting part, but if using this structure, described stopper section 513 is then
Sliding up and down between anticreep pressure contact portion 611 and elastomeric pad 62 roof, power of the leading pressure contact portion of upper supporting part is the most no longer
It is to be displaced downwardly to directly be crimped on power of the leading support of mounting seat, but is displaced downwardly to be crimped on elastomeric pad.
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.Prevent from regulating gland it addition, the effect of elastomeric pad here is not only
Loosen, it is also possible to by selecting the elastomeric pad of differing heights to adjust whole height, or the leading of regulation upper supporting part
Gap between power of the leading support of power pressure contact portion and mounting seat, with the demand under satisfied different occasions.
(embodiment 2)
The present embodiment and embodiment 1 are essentially identical, and difference is: as shown in Fig. 6 and Fig. 7, lead power support top
End arranges static contact 123, and power of the leading pressure contact portion at upper supporting part arranges the moving contact 514 adaptive with this static contact；When this
The power pressure contact portion of leading is crimped on when leading on power support, and moving contact crimping is arranged on static contact, and both realize electrical connection.?
In concrete practice, when moving contact and static contact electrical contact, produces one signal of telecommunication to connected external central control circuit,
When central control circuit receives this signal, show the data that the second precision LOAD CELLS measures on a display screen；In the middle of
When centre control circuit does not receives this signal, show the data that the first precision LOAD CELLS measures on a display screen；Namely
Being to say, this dynamic/static contact combines the signal switch automatically can changed as display screen video data.Specifically
In practice, also can use other structure, replace the combination of this dynamic/static contact for example with tongue tube, proximity switch etc..
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 (4)
1. an adjustable pair of rank double precision LOAD CELLS, including mounting seat, the first precision LOAD CELLS,
Two precision LOAD CELLSs and a spike；It is characterized in that: also include elastic supporting piece and for regulating elastic supporting piece height
The governor motion of degree；Described mounting seat is provided with mounting plate portion and leads power for what self pressure was passed to mounting plate portion
Support；Elastic supporting piece, 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 to supporting
On 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 diapire of supporting member is provided with leads power pressure contact portion, leads power pressure contact portion and exceeds the top leading power support when free state；On
The periphery wall of supporting member is provided with the stopper section of evagination, and the periphery wall leading power support is provided with external screw thread district；Governor motion
Including regulation gland and elastomeric pad；The upper end of this regulation gland is provided with the anticreep pressure contact portion of annular, and lower end inner wall is provided with
The internal threaded regions adaptive with leading power support external screw thread district, middle-end is provided with electrolysis；Regulate gland by this electrolysis bullet
Property pad is crimped on leads on power support top, and described anticreep pressure contact portion is set in being positioned at above stopper section of upper supporting part
On outer wall, under free state, under the elastic force effect of spring, anticreep pressure contact portion is crimped on stopper section.
Adjustable pair of rank double precision LOAD CELLS the most according to claim 1, it is characterised in that: described bullet
Property pad central bore aperture more than the external diameter of stopper section of upper supporting part；Under external force, described stopper section is anti-
De-pressure contact portion and leading slides up and down between power support top；When upper supporting part pressure-bearing stress is to predeterminable level, leads and defeat
Meet subordinate to move to be crimped on and lead on power support.
Adjustable pair of rank double precision LOAD CELLS the most according to claim 1, it is characterised in that: cushion
The aperture of sheet central bore is less than the external diameter of the stopper section of upper supporting part；Under external force, described stopper section is in anticreep pressure
Connect and slide up and down between portion and elastomeric pad roof；When upper supporting part pressure-bearing stress is to predeterminable level, lead to defeat meeting subordinate
Move to be crimped on elastomeric pad.
Adjustable pair of rank double precision LOAD CELLS the most according to claim 1, it is characterised in that: the first essence
The range of degree LOAD CELLS is less than the range of the second precision LOAD CELLS.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610096281.4A CN105953898B (en) | 2016-01-20 | 2016-01-20 | Adjustable double-step double-precision weighing sensor |
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| CN201610096281.4A CN105953898B (en) | 2016-01-20 | 2016-01-20 | Adjustable double-step double-precision weighing sensor |
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