CN200982885Y - Automatic weighting device of loader - Google Patents
Automatic weighting device of loader Download PDFInfo
- Publication number
- CN200982885Y CN200982885Y CN 200620129627 CN200620129627U CN200982885Y CN 200982885 Y CN200982885 Y CN 200982885Y CN 200620129627 CN200620129627 CN 200620129627 CN 200620129627 U CN200620129627 U CN 200620129627U CN 200982885 Y CN200982885 Y CN 200982885Y
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- weighing
- shovel loader
- dynamic
- weighing device
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Abstract
An automatic weighing device for a loading machine consists of an acquisition unit for the weighing data, a position identification unit, a dynamic level measuring system of the main body, a temperature sensor, a weighing instrument and a printer, which is capable of simultaneously compensating the change of the force value when realizing the dynamic weighing, with full consideration to the effect on the measuring value from the hydraulic change induced by the temperature change of the hydraulic-oil and the driving force change of the loading machine caused by the non-planeness of the road surface . The weighing device applies the closed-loop control by the software correction, which guarantees a relatively high weighing accuracy in the dynamic state. The weighing device has the advantages of simple structure, reliable performance, high weighing accuracy and easy mounting and maintenance, which is capable of being used in the dynamic weighing of the goods on the loading machine.
Description
Technical field: the utility model relates to and a kind ofly has automatic feed or discharging and become the weighing equipment of batch of material, particularly a kind of shovel loader dynamic metering device with weighing.
Background technology: shovel loader, more and more needs the dress material is effectively measured as the main machine that loads and unloads bulk material and the short distance of material is carried in the entrucking process, in case overload.
Existing loader weighing apparatus, pressure transducer generally adopts hardware compensating to Temperature Compensation, and temperature compensation range is narrower, inapplicable shovel loader working oil temperature-20 ℃-100 ℃ of variation ranges.In addition, generally do not consider walking machine when tilting in the piston fluid pressure can change, and because the unequal problem of piston pressure at two ends that piston is revealed or other factors cause, but the shovel loader loaded material is to be in dynamically, when tilting of car body, hydraulic pressure is not necessarily identical in the hydraulic piston of scraper bowl two ends, even the pressure at two ends is because piston seal is bad about the same piston, also can build-up of pressure inequality, so can cause weighing inaccurate.
Goal of the invention: the utility model provides a kind of shovel loader automatic weighing device, can effectively overcome above-mentioned shortcoming.
Technical scheme: dynamic loading organic electronic scale is made up of weight data collecting unit, location identification unit, fuselage dynamic level measuring system, temperature sensor, weighing instrument, printer etc.Its principle of work is: the variation of the hydraulic pressure transducer perception hydraulic pressure by being installed in the lifting hydraulic cylinder oil circuit, utilize hydraulic pressure to change with the proportionate relationship of weight change and try to achieve weight.
The weight data collecting unit is made up of hydraulic pressure transducer and accessory circuit thereof, and hydraulic pressure transducer is finished hydraulic pressure (weight)--the conversion of voltage signal under the excitation of bridge voltage, and this voltage signal is through amplifying--voltage/digital conversion--interface--computing machine.Computing machine is reduced into weight to the digital signal of receiving.
Location identification unit is installed on the loading arm since shovel loader in horizontal sliding and lift, fall when grab bucket firmly inconsistent, need determine weight according to different positions.So the installation site identification switch, switching signal is through shaping circuit input computing machine, and computing machine is determined weight by diverse location with the related curve of weight.
Dynamic loading organic electronic scale is installed at electronic-weighing equipment on the shovel loader, and its lifting force value is detected automatically.Under the perfect condition, the shovel loader electronic scales in use is preferably in the road surface of a level and carries out dynamic measurement.Because rugged road surface must make the shovel loader expulsive force change: upward slope power is big, descending power is little, thereby causes that hydraulic pressure changes, and metering is the result change thereupon.And the variation of this hydraulic pressure is caused by road conditions, is not goods weight itself, so the injustice on road surface can cause error in dipping.In actual use, on-the-spot road surface can not remain level.For this reason, the utility model uses high speed dynamic level measurement mechanism, at first by on-site proving, draws out shovel loader fuselage different inclination angle and cylinder pressure variation curve.Lifting hydraulic cylinder because the pitch angle that the ground injustice causes is measured by high speed dynamic level measurement mechanism, is compensated by pitch angle and weight variation curve, thoroughly solved this problem.Measuring accuracy is improved greatly, satisfied on-the-spot request for utilization.
The shovel loader long time continuous working, the oil temperature of hydraulic jack can raise, oil viscosity diminishes, oil pressure value also can diminish, and influences the numerical value that pressure transducer records, by the variation of temperature sensor perception oil temperature, utilize the signal numerical value of temperature sensor, the oil temperature of compensating cylinder changes the influence to the oil cylinder oil pressure, utilizes the software correcting mode to adopt closed-loop control, guarantees to obtain under dynamic environment higher weighing accuracy.Temperature sensor is supplying to finish temperature under the excitation of bridge voltage--and the conversion of voltage signal, this voltage signal is through amplifying--voltage/digital conversion--communication interface--computing machine.Computing machine compensates the digital signal of receiving by temperature/weight distortion curve.
Weighing instrument is made up of sensor signal (hydraulic pressure, temperature sensor) amplifier, voltage/digital quantizer, computer system, interface circuit, power circuit, LCD, keyboard etc., is the core of shovel loader dynamic metering device.Finish the function such as collection, logic discrimination, weight calibration, weight compensating, weight calculating, data presentation, data storage of weight.
The shovel loader electronic scales can be worked by the increasing or decreasing mode of goods, when working with incremental manner, the every loading of scraper bowl once, the microprocessor system gravimetric value that just adds up is until till the weight that presets; When working in the mode of successively decreasing, at first preset general assembly (TW), the charging capacity that at every turn deducts scraper bowl is until being zero.
Software package can be stored or information extraction, as user storage work-yard data, and material data, Load Identification information and other job informations.Can be used for acquisition of information and directly transmit RI radio intelligence to computing machine.
Beneficial effect: single weight, the cumulative weight of goods (as coal) are provided in the process of shovel loader lade, and the operator determines charging capacity accurately according to the metering result, once is loaded into ratings.Save and unload (benefit) process, increase work efficiency, reduce shipping and delivery cost.
Description of drawings: Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a schematic block circuit diagram of the present utility model.
Embodiment: as shown in Figure 1 and Figure 2, after shovel loader is installed in hydraulic pressure transducer 4 on the lifting hydraulic cylinder oil circuit and perceives pressure data, through after filtering, amplification, the A/D conversion, signal is imported single-chip microcomputer 8; Location identification unit 5 comprises location recognition switch and the shaping circuit that is installed on the loading arm 2, perception swing arm position, and output data is given single-chip microcomputer 8 in good time; Fuselage dynamic level measuring system 6 by on-site proving, is drawn out shovel loader fuselage different inclination angle and cylinder pressure variation curve for being installed in the level meter on the hydraulic cylinder.Compensate by pitch angle and weight variation curve, utilize the signal numerical value of temperature sensor 7, the oil temperature of compensating cylinder 3 changes to be influenced oil cylinder 3 oil pressure.The data that each part mentioned above is gathered are all imported single-chip microcomputer output data after system software is handled.
Claims (3)
1, a kind of shovel loader automatic weighing device is characterized in that: be made up of weight data collecting unit, location identification unit, fuselage dynamic level measuring system, temperature sensor, weighing instrument, printer etc.; Wherein, the weight data collecting unit comprises hydraulic pressure transducer and the accessory circuit that is installed on the lifting hydraulic cylinder oil circuit; Location identification unit comprises the location recognition switch that is installed on the loading arm, shaping circuit; Fuselage dynamic level measuring system is installed on the hydraulic cylinder, and temperature sensor is installed on the hydraulic jack; Each unit all is connected with single-chip microcomputer.
2, shovel loader automatic weighing device according to claim 1 is characterized in that: at two swing arms of shovel loader one hydraulic pressure transducer is installed respectively.
3, shovel loader automatic weighing device according to claim 1 and 2 is characterized in that: the data of hydraulic pressure transducer and temperature sensor are imported single-chip microcomputer with signal after filtering, amplification, A/D conversion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620129627 CN200982885Y (en) | 2006-07-25 | 2006-07-25 | Automatic weighting device of loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620129627 CN200982885Y (en) | 2006-07-25 | 2006-07-25 | Automatic weighting device of loader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200982885Y true CN200982885Y (en) | 2007-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620129627 Expired - Fee Related CN200982885Y (en) | 2006-07-25 | 2006-07-25 | Automatic weighting device of loader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200982885Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735318A (en) * | 2011-04-12 | 2012-10-17 | 塔姆特豪思公司 | Measurement system for a material transfer vehicle |
| CN102770741A (en) * | 2009-12-04 | 2012-11-07 | 斗山产业车辆株式会社 | Cargo weight measuring apparatus and method using compensation pressure according to temperature change of operating oil |
| CN102788628A (en) * | 2011-05-20 | 2012-11-21 | 深圳市测力佳控制技术有限公司 | Electronic scale of loading machine |
| CN101999069B (en) * | 2007-11-30 | 2013-05-01 | 卡特彼勒公司 | Payload system that compensates for rotational forces |
| CN103913214A (en) * | 2012-12-28 | 2014-07-09 | 秦皇岛天业通联重工股份有限公司 | On-board automatic weighing system |
| CN105369846A (en) * | 2015-12-06 | 2016-03-02 | 吉林大学 | Load testing system for loader working device |
| CN107209044A (en) * | 2014-12-24 | 2017-09-26 | 昆士兰中部矿业供应有限公司 | The system and method for calculating payload weight |
| CN108776920A (en) * | 2018-05-31 | 2018-11-09 | 常熟市百联自动机械有限公司 | A kind of new retail supermarket shopping guide method |
| CN110414077A (en) * | 2019-07-08 | 2019-11-05 | 中国铁路上海局集团有限公司科学技术研究所 | A kind of the load weighing method and its weighing system of loading machine |
| CN112525315A (en) * | 2020-12-15 | 2021-03-19 | 潍柴动力股份有限公司 | Vehicle weighing method and device |
-
2006
- 2006-07-25 CN CN 200620129627 patent/CN200982885Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101999069B (en) * | 2007-11-30 | 2013-05-01 | 卡特彼勒公司 | Payload system that compensates for rotational forces |
| CN102770741A (en) * | 2009-12-04 | 2012-11-07 | 斗山产业车辆株式会社 | Cargo weight measuring apparatus and method using compensation pressure according to temperature change of operating oil |
| CN102770741B (en) * | 2009-12-04 | 2015-04-08 | 株式会社斗山 | Freight weight measurement apparatus and method using compensation pressure in accordance with temperature change of hydraulic fluid |
| CN102735318A (en) * | 2011-04-12 | 2012-10-17 | 塔姆特豪思公司 | Measurement system for a material transfer vehicle |
| CN102788628A (en) * | 2011-05-20 | 2012-11-21 | 深圳市测力佳控制技术有限公司 | Electronic scale of loading machine |
| CN103913214A (en) * | 2012-12-28 | 2014-07-09 | 秦皇岛天业通联重工股份有限公司 | On-board automatic weighing system |
| CN107209044B (en) * | 2014-12-24 | 2020-06-30 | 昆士兰中部矿业供应有限公司 | System and method for calculating payload weight |
| CN107209044A (en) * | 2014-12-24 | 2017-09-26 | 昆士兰中部矿业供应有限公司 | The system and method for calculating payload weight |
| CN105369846A (en) * | 2015-12-06 | 2016-03-02 | 吉林大学 | Load testing system for loader working device |
| CN105369846B (en) * | 2015-12-06 | 2018-04-10 | 吉林大学 | A kind of working device of loader load test system |
| CN108776920A (en) * | 2018-05-31 | 2018-11-09 | 常熟市百联自动机械有限公司 | A kind of new retail supermarket shopping guide method |
| CN110414077A (en) * | 2019-07-08 | 2019-11-05 | 中国铁路上海局集团有限公司科学技术研究所 | A kind of the load weighing method and its weighing system of loading machine |
| CN112525315A (en) * | 2020-12-15 | 2021-03-19 | 潍柴动力股份有限公司 | Vehicle weighing method and device |
| CN112525315B (en) * | 2020-12-15 | 2022-07-19 | 潍柴动力股份有限公司 | Vehicle weighing method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071128 Termination date: 20140725 |
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| EXPY | Termination of patent right or utility model |