CN2117596U - Electronic weighing apparatus with gravity compensation - Google Patents
Electronic weighing apparatus with gravity compensation Download PDFInfo
- Publication number
- CN2117596U CN2117596U CN 92205153 CN92205153U CN2117596U CN 2117596 U CN2117596 U CN 2117596U CN 92205153 CN92205153 CN 92205153 CN 92205153 U CN92205153 U CN 92205153U CN 2117596 U CN2117596 U CN 2117596U
- Authority
- CN
- China
- Prior art keywords
- weighing
- sensor
- measuring
- gravity compensation
- measuring chute
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
Abstract
The utility model relates to an electronic weighing apparatus with a gravity compensation mode, which comprises a sensor, a supporting rod, a weighing hopper, a discharging structure, a connecting rod, counter weight objects and a supporting point. One end of the connecting rod is connected with the weighing hopper, the other end is connected with the counter weight objects, and the middle part is the supporting point which can be fixedly connected with ground. The tare weight of a weighing device which is composed of the weighing hopper and the discharging structure can be lightened by adopting the gravity compensation mode. The maximum value of the weighed objects can approach to the nominal value of the sensor because the tare weight of the weighing device is reduced, and the effective weighing section of the sensor and increase weighing accuracy can be increased. The utility model is suitable for the weighing devices having small weighing range and large tare weight to reform particularly.
Description
The utility model belongs to measuring apparatus, is specifically related to a kind of gravity compensation formula electronic weighing instrument.
At present, the measuring apparatus that some mechanical measuring apparatus are made up by electromechanics step by step in commercial production replaces and transforms, but in the process of transforming, exist such open question, because measuring chute and shedding mechanism all have certain weight, the existence of this weight will make by F in the weighing device
1, F
2, F
3Effective metering section of the gage probe of forming reduces, and causes the decline of actual weighing accuracy, and process can be described below:
With three sensor F
1, F
2, F
3One end is fixedlyed connected with three points of measuring chute top, the other end is fixedlyed connected with cramp bar, measuring chute is propped by sensor F, this moment is because the weight existence of measuring chute and shedding mechanism, the output of the existing electric signal of sensor F, if the range of sensor F is 100Kg, and the weight of measuring chute and shedding mechanism is 50Kg, when refilling the material of 50Kg in the measuring chute, sensor F has reached full scale value, when the precision of measuring apparatus is 0.1%, can think that the resolution of measuring apparatus is 0.1Kg, will remove the measuring chute of 50Kg and the deadweight 50Kg of shedding mechanism in the total value of 100Kg in the actual metered process, Shi Ji weighing material at most also can only have 50Kg like this, with respect to the resolution of 0.1Kg, the measuring apparatus of this moment can only reach 0.2% precision.The shortcoming of this metering method is exactly because the influence of tare weight makes the actual metered precise decreasing, and when tare weight increases and the maximum variable of measuring apparatus when constant, actual measuring accuracy will further reduce.
The purpose of this utility model just is to solve the deficiencies in the prior art, and a kind of measuring accuracy height, small investment, the method that provide are easy, is particularly suitable for reducing in the electronic weighing instrument new device that causes the actual metered precise decreasing because of tare weight.
The purpose of this utility model realizes by following measure.Gravity compensation formula electronic weighing instrument is made up of sensor, cramp bar, measuring chute, discharging structure, connecting link, counterweight object and fulcrum.The two ends of sensor are connected with cramp bar and measuring chute respectively, and shedding mechanism is located at the below of feed bin, and are connected with measuring chute.One end of connecting link is connected with measuring chute, and the other end is connected with the counterweight object, the centre be one with the fulcrum that is fixedly connected.
Sensor described in the utility model can be pulling force or pressure transducer.Measuring chute can also be a weigh-bridge.
Below in conjunction with accompanying drawing concrete structure of the present utility model is described in detail.
Accompanying drawing is the utility model structural representation.
Among the figure: 1, support bar 2, measuring chute 3, shedding mechanism 4, connecting link 5, counterweight object 6, fulcrum F
1, F
2, F
3Be sensor
As shown in drawings, pulling force sensor F
1, F
2, F
3An end link to each other with cramp bar (1), the other end is connected with measuring chute 2, shedding mechanism 3 is located at feed bin below, and is connected with measuring chute 2.One end of connecting link 4 is connected with measuring chute 2, and the other end is connected with counterweight object 5, the centre be one with the fulcrum 6 that is fixedly connected.To make connecting link 4 be that fulcrum produces a power that makes progress to measuring chute 2 with 6 to this device by adding counterweight object 5, and make this power approaching or equal the weight sum of measuring chute 2 and shedding mechanism 3.The tare weight of measuring apparatus just reduces widely or equals zero like this, just can measure the material near the measuring apparatus maximum range in the metering of actual production, makes that the actual metered precision is approaching or equals specified measuring accuracy.Can remove to measure material near 100Kg as measuring apparatus in the range ability of 100Kg, its actual weighing precision can reach 0.1% accuracy rating.Weight to counterweight object 5 can calculate by lever principle, the method that also can adopt examination to join.
Compared with the prior art, this metering device has the measuring accuracy height, small investment, and the advantage such as method is easy, owing to be used the measuring principle that consists of the decrement method with computer, the weight of object of counterweight needn't be very accurate, therefore grasps easily. It is little to be specially adapted to range of weighing, the transformation of the metering device that tare weight is big.
Claims (4)
1, a kind of gravity compensation formula electronic weighing instrument comprises sensor (F
1), (F
2), (F
3), cramp bar (1), measuring chute (2), shedding mechanism (3), sensor (F
4), (F
2), (F
3) two ends be connected with cramp bar (1) and measuring chute (2) respectively, shedding mechanism (3) is located at the below of feed bin, and be connected with measuring chute (2), the end of connecting link (4) that is characterised in that of the present utility model is connected with measuring chute (2), the other end is connected with counterweight object (5), the centre be one with the fulcrum (6) that is fixedly connected.
2, measuring apparatus according to claim 1 is characterized in that described sensor (F
1), (F
2), (F
3) can be pulling force sensor.
3, measuring apparatus according to claim 1 is characterized in that described sensor (F
1), (F
2), (F
3) can also be pressure transducer.
4, measuring apparatus according to claim 1 is characterized in that described measuring chute (2) can also be a weigh-bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92205153 CN2117596U (en) | 1992-03-24 | 1992-03-24 | Electronic weighing apparatus with gravity compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92205153 CN2117596U (en) | 1992-03-24 | 1992-03-24 | Electronic weighing apparatus with gravity compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2117596U true CN2117596U (en) | 1992-09-30 |
Family
ID=4951388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92205153 Granted CN2117596U (en) | 1992-03-24 | 1992-03-24 | Electronic weighing apparatus with gravity compensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2117596U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103204394A (en) * | 2013-04-28 | 2013-07-17 | 太原市海通自动化技术有限公司 | Micro-amount feeding machine capable of realizing dynamic weighing |
| CN103234615A (en) * | 2013-05-02 | 2013-08-07 | 太原市海通自动化技术有限公司 | Feeding measuring method for feeding machine and feeding system |
| CN104776897A (en) * | 2015-04-16 | 2015-07-15 | 南京信息工程大学 | Balance type high-precision electronic weighing device and weighing method thereof |
| CN107091676A (en) * | 2016-02-17 | 2017-08-25 | 梅特勒-托莱多有限公司 | Difference measurement circuit and the scale with force compensating |
| CN108020492A (en) * | 2017-05-12 | 2018-05-11 | 北京华索科技股份有限公司 | Grain size analysis system |
-
1992
- 1992-03-24 CN CN 92205153 patent/CN2117596U/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103204394A (en) * | 2013-04-28 | 2013-07-17 | 太原市海通自动化技术有限公司 | Micro-amount feeding machine capable of realizing dynamic weighing |
| CN103234615A (en) * | 2013-05-02 | 2013-08-07 | 太原市海通自动化技术有限公司 | Feeding measuring method for feeding machine and feeding system |
| CN104776897A (en) * | 2015-04-16 | 2015-07-15 | 南京信息工程大学 | Balance type high-precision electronic weighing device and weighing method thereof |
| CN107091676A (en) * | 2016-02-17 | 2017-08-25 | 梅特勒-托莱多有限公司 | Difference measurement circuit and the scale with force compensating |
| CN108020492A (en) * | 2017-05-12 | 2018-05-11 | 北京华索科技股份有限公司 | Grain size analysis system |
| CN108020492B (en) * | 2017-05-12 | 2024-04-30 | 北京华索科技股份有限公司 | Particle size analysis system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |