CN101187581A - Double weighing sensor composite weighing device - Google Patents
Double weighing sensor composite weighing device Download PDFInfo
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- CN101187581A CN101187581A CNA2007101511752A CN200710151175A CN101187581A CN 101187581 A CN101187581 A CN 101187581A CN A2007101511752 A CNA2007101511752 A CN A2007101511752A CN 200710151175 A CN200710151175 A CN 200710151175A CN 101187581 A CN101187581 A CN 101187581A
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Abstract
The invention relates to a compound weighting device of a double weighting sensor, wherein a tensile pressure type sensor with minimum measuring range and high sensibility and a cantilever beam type sensor with large measuring range and low sensibility are respectively fixed in a casing of the device, and a compound weighting device with larger main measuring range which is small when in weight and higher sensibility is formed. Two sensors are respectively connected on a lead wire through a short tensile wire and a long tensile wire, a counterweight is connected on the lower portion of the tensile pressure type sensor, the weight of the counterweight and the tensile pressure type sensor is basically equal to the measuring range of the tensile pressure type sensor, the lower portion of the counterweight is fixed on a pallet which can move from the bottom to the top of the casing, the counterweight is led to contact or disengage from the pallet, and the lead wire which is used to weight is fixed by a bracket. The invention can satisfy special needs of sensors such as equal diameter controlling of crystal growth and the like, which has large measuring range, simultaneously has higher sensibility when in minimum measuring range.
Description
[technical field]: the invention belongs to the compound sensor field, but particularly relating to big still lower LOAD CELLS and the little highly sensitive LOAD CELLS of range of sensitivity of range of a kind of employing is combined with each other, constitute one bigger at total range, simultaneously at the compound weighing device of weighing and hour to have higher sensitivity.
[background technology]: traditional resistor strain gauge load cell principle has determined that its sensitivity and range are closely related, and range is big more in general, and sensitivity is low more, and range is more little, and sensitivity is high more.
But some occasions uses LOAD CELLS to require range bigger, hour requires higher sensitivity again weighing simultaneously, and common LOAD CELLS can't reach requirement.
Be used for measuring the LOAD CELLS of crystal growth weight during such as the Czochralski grown monocrystalline, necking down and shouldering stage in the time of initial, the diameter of crystal growth is very little, the speed of growth is very slow, the weight that LOAD CELLS is measured is very little, but require LOAD CELLS can measure the variable quantity of the weight and the weight of crystal growth, therefore require sensor that higher sensitivity is arranged.But behind isodiametric growth of crystal, crystal diameter is much larger than necking down stage and shouldering initial stage, and rate of crystalline growth is very fast, so LOAD CELLS sensitivity in this time is not too high also can weighing come out.Growth along with crystal, general assembly (TW) can be very big, and single little range sensors can satisfy the high sensitivity requirement of starting stage, but total range can't be satisfied the demand, though single wide range sensor can satisfy total range needs, can't provide the high sensitivity of starting stage.
[summary of the invention]: the objective of the invention is to solve the prior art above shortcomings, a kind of double weighing sensor composite weighing device is provided.
Double weighing sensor composite weighing device provided by the invention, comprise a housing, the top is equipped with a carriage in the housing, the lead-in wire that is used to weigh is passed and is fixed on carriage by case top, be fixed with long and short two root pull spring below the carriage, short pull spring lower end is hung with drawing and pressing type sensor and mass successively, and the below of mass is the pallet that is fixed on the housing, the lower end of long pull spring is fixed with the cantilever end of the beam type sensor that is positioned at the pallet below, and long pull spring length is adjustable.
On the described pallet adjusting screw is installed, tray position is moved up and down, so that mass is contacted with pallet or break away from by regulating this screw.
The weight of mass adds the deadweight sum of drawing and pressing type sensor conform to the range of drawing and pressing type sensor (promptly equal substantially).
Advantage of the present invention and good effect:
Big still lower LOAD CELLS and little highly sensitive LOAD CELLS of range of sensitivity is combined with each other but the present invention adopts a range, constitute one bigger at total range, simultaneously at the compound weighing device of weighing and hour to have higher sensitivity.
[description of drawings]:
Fig. 1 is the double weighing sensor composite weighing device synoptic diagram.
Wherein, 1 shell, 2 drawing and pressing type sensors, 3 beam type sensors, 4 pull springs, 5 pull springs, 6 lead-in wires, 7 weights, 8 pallets, 9 carriages.
[embodiment]:
Embodiment 1:
Double weighing sensor composite weighing device provided by the invention, comprise a housing 1, the top is equipped with a carriage 9 in the housing 1, the lead-in wire 6 that is used to weigh passes and is fixed on carriage 9 by housing 1 top, be fixed with long and short two root pull spring 4 and 5 below the carriage 9, the lower end of short pull spring 4 is hung with the drawing and pressing type sensor 2 and the mass 7 of little range successively, and the weight of mass 7 adds the deadweight sum of drawing and pressing type sensor 2 conform to the range of drawing and pressing type sensor 2 (promptly equal substantially).The below of mass 7 is the pallet 8 that is fixed on the housing 1, on the pallet 8 adjusting screw is installed, and by regulating this screw pallet 8 positions is moved up and down, so that mass 7 is contacted with pallet 8 or break away from.The lower end of long pull spring 5 is fixed with the cantilever end that is positioned at the beam type sensor 3 of pallet 8 belows, and long pull spring 5 length are adjustable.
Before the use, will go between earlier 6 is connected and is subjected to the pulling force place, regulates pull spring 5 long enoughs, and sensor 3 is not stressed, and regulates the position of lead-in wire 6, makes short pull spring 4 drive sensors 2 and reaches full scale output.At this moment, shorten long pull spring 5 again, make sensor 3 just stressed.And then regulate pallet 8, make pallet 8 just hold up weight 7.
During use, regulate lead-in wire 6, make sensor 2 just stressed.Like this, when lead-in wire 6 was subjected to pulling force, at first sensor 2 was stressed, because sensor 2 is highly sensitive sensors, can weigh less weight, had higher sensitivity simultaneously again.
Along with the increase of lead-in wire 6 pulling force, the output of sensor 2 is also increasing, and when increasing to the range of sensor 2, weight 7 is thrown off pallet 8, and this moment, the output of sensor 2 no longer changed, and remained near the maximum output.At this moment, sensor 3 also begins stressed, and the range of sensor 3 is bigger, at this moment can bear bigger lead-in wire 6 pulling force, promptly can measure bigger weight.
When selecting sensor, the bigger type of deformation quantity when sensor 2 will be selected full scale output, the adjusting of convenient long pull spring 5.
In use, the signal of sensor 2 and sensor 3 can be handled with a mimic channel, the output signal stack back of the output signal of sensor 2 and sensor 3 is as total output signal, also can be directly connected to data collecting card, two paths of signals is input to computing machine cooperate Control Software to use.
Claims (4)
1. double weighing sensor composite weighing device, it is characterized in that this device comprises a housing, the top is equipped with a carriage in the housing, the lead-in wire that is used to weigh is passed and is fixed on carriage by case top, be fixed with long and short two root pull spring below the carriage, short pull spring lower end is hung with drawing and pressing type sensor and mass successively, and the below of mass is the pallet that is fixed on the housing, and the lower end of long pull spring is fixed with the cantilever end of the beam type sensor that is positioned at the pallet below.
2. double weighing sensor composite weighing device according to claim 1 is characterized in that, is equipped with on the described pallet to be used to regulate the pallet upper-lower position so that the screw that mass contacts or breaks away from pallet.
3. double weighing sensor composite weighing device according to claim 1 and 2 is characterized in that the weight of mass adds that the deadweight sum of drawing and pressing type sensor conforms to the range of drawing and pressing type sensor.
4. double weighing sensor composite weighing device according to claim 1 and 2 is characterized in that, described long pull spring length is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101511752A CN101187581A (en) | 2007-12-21 | 2007-12-21 | Double weighing sensor composite weighing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101511752A CN101187581A (en) | 2007-12-21 | 2007-12-21 | Double weighing sensor composite weighing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101187581A true CN101187581A (en) | 2008-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101511752A Pending CN101187581A (en) | 2007-12-21 | 2007-12-21 | Double weighing sensor composite weighing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101187581A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851732A (en) * | 2012-09-26 | 2013-01-02 | 南京晶升能源设备有限公司 | Weighing mechanism of sapphire single crystal furnace |
| CN104357900A (en) * | 2014-11-28 | 2015-02-18 | 南京晶升能源设备有限公司 | Crystal weighing apparatus applied to single crystal furnace |
| CN105698905A (en) * | 2016-04-02 | 2016-06-22 | 苏州科技学院 | Sensor assembly |
-
2007
- 2007-12-21 CN CNA2007101511752A patent/CN101187581A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851732A (en) * | 2012-09-26 | 2013-01-02 | 南京晶升能源设备有限公司 | Weighing mechanism of sapphire single crystal furnace |
| CN102851732B (en) * | 2012-09-26 | 2015-08-19 | 南京晶升能源设备有限公司 | The Weighing mechanism of sapphire single-crystal furnace |
| CN104357900A (en) * | 2014-11-28 | 2015-02-18 | 南京晶升能源设备有限公司 | Crystal weighing apparatus applied to single crystal furnace |
| CN105698905A (en) * | 2016-04-02 | 2016-06-22 | 苏州科技学院 | Sensor assembly |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080528 |