CN103148923B - Gram group weight automatically measuring system - Google Patents
Gram group weight automatically measuring system Download PDFInfo
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- CN103148923B CN103148923B CN201310042750.0A CN201310042750A CN103148923B CN 103148923 B CN103148923 B CN 103148923B CN 201310042750 A CN201310042750 A CN 201310042750A CN 103148923 B CN103148923 B CN 103148923B
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- counterweight
- weight
- mechanical arm
- yard
- turntable
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- 238000005303 weighing Methods 0.000 claims abstract description 20
- 230000033001 locomotion Effects 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 238000005259 measurement Methods 0.000 claims description 23
- 230000003028 elevating effect Effects 0.000 claims description 13
- 238000012360 testing method Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 5
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013523 data management Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The invention discloses a gram group weight automatically measuring system. The gram group weight automatically measuring system comprises a fixing rack, a control mechanism, a weight bearing mechanism, a weight take-put mechanism and a weight measuring mechanism, wherein the control mechanism is installed on the fixing rack, the weight measuring mechanism is provided with a weighing platform. The weight take-put mechanism comprises a rotating platform, a first driving mechanism, a lifting mechanism and a mechanical hand, wherein the first driving mechanism is used for driving the rotating platform, the lifting mechanism is fixed on the rotating platform, and the mechanical arm is arranged on the lifting mechanism. The mechanical hand comprises a mechanical arm and a weight placing drawer, magnetic steel is arranged at one end where the mechanical arm is connected with the weight placing drawer, and the weight placing drawer is attached on the magnetic steel. The weight bearing mechanism is a ring-shaped weight bearing platform with a gap which surrounds the lifting mechanism. A plurality of bearing places is arranged on the ring-shaped weight bearing platform. The weight placing drawer, the bearing places and the weighting platform are in matched fence structure. The gram group weight automatically measuring system is small in number of measuring system components, compact in structure, fluent in take-put process, high in loading speed and reliable in motion.
Description
Technical field
The present invention relates to a kind of weight measurement device, relate in particular to a kind of gram group counterweight automatic measurement system.
Background technology
Measure in test at counterbalance mass measuring parameter, need to measure the mass metrology such as quality, the magnetic parameter of counterweight, whether meet the technical requirement in JJG96-2004 " counterweight " national verification code to pass judgment on this counterweight.In testing process, conventionally counterweight need to be carried on the mass comparator and magnetic measuring device with its quality matches, this carrying operation is a kind of repeated hand labour, length consuming time.
In order to address the above problem, prior art discloses multiple automatic handing system of weight, and as Chinese patent 201010105973.3 discloses a kind of automatic handing system of weight, described system comprises slide assemblies, telescopic component and mechanical arm.Described slide assemblies and telescopic component be compounding practice under power control parts drive, and controls described Manipulator Transportation counterweight; Described slide assemblies comprises slide rail set and matable assembly thereof, and described slide rail set comprises the cross track of at least one pair of X axis, comprises the short track of at least one Y-axis, between them, coordinates by pulley blocks.Visible this patent is in order to realize the carrying of counterweight, and mechanical arm need to move upward in X, Y, tri-sides of Z, and the platform of mechanical arm and carrying counterweight is fence structure, if three any directions of direction coordinate occurs deviation all cannot capturing counterweight.
Chinese patent 201120184396.1 discloses a kind of weight measurement automaton, comprise level tank carrier, counterweight loading tray, counterweight carrier, described level tank carrier connects liquid tank Driving Stepping Motor, described counterweight loading tray is all connected counterweight Driving Stepping Motor with counterweight carrier, described liquid tank Driving Stepping Motor is all connected PLC controller with counterweight Driving Stepping Motor, is also connected with level tank carrier position detecting switch, counterweight loading tray position detecting switch, counterweight carrier position detecting switch and touch-screen on described PLC controller.This device counterweight loading tray can lifting and rotation realize counterweight and automatically measure, but need manually counterweight is transported on loading tray.
Su Wei etc. disclose a kind of kilogram group counterweight automatic checkout system, it comprises that counterweight holds platform, Handling device and measuring instrument, wherein Handling device is also to adopt the movable stand being made up of X-axis slide rail and Y-axis slide rail, because kilogram group counterbalance mass volume is larger, the rare deviation in movable stand shift position, does not affect and picks and places counterweight, if but for a gram group counterweight, movement deviation is large, likely causes picking and placeing counterweight failure, and therefore operational reliability is poor.
Summary of the invention
The invention provides a kind of gram group counterweight automatic measurement system, pick and place artificial length consuming time, inefficiency, the easy problem such as make mistakes to solve existing measurement mechanism counterweight.
A kind of gram group counterweight automatic measurement system, comprise fixed mount, and being arranged on control gear, counterweight load carrier, counterweight fetching device and the weight measurement mechanism with weighing unit on fixed mount, described counterweight fetching device comprises turntable, drives the first driving mechanism of turntable, is fixed on the elevating mechanism on turntable and is arranged on the mechanical arm on elevating mechanism;
Described mechanical arm comprises mechanical arm and puts a yard drawer, and mechanical arm connects the one end of putting yard drawer and is provided with magnet steel, puts a yard drawer and is adsorbed on magnet steel;
Described counterweight load carrier is to hold a yard platform around the notched annular of described elevating mechanism, and described annular is held a yard platform and is provided with several carrying positions;
A described yard drawer, carrying position and the weighing unit put is the fence structure matching.
Pick-and-place machine counterweight of the present invention is coordinated and is realized by turntable and elevating mechanism, with respect to traditional fetching device, structure is more simple, counterweight only moves on circumferential and vertical direction, can ensure preferably to put the cooperation between a yard drawer, carrying position and weighing unit, improve operational reliability, put in addition between yard drawer and mechanical arm and adsorb and be connected by magnet steel, can avoid because fortuitous event causes coordinating inaccurate and damage device.
It is cylindrical that of the present invention gram of group counterweight profile is roughly, minimum 1g, diameter 6mm, maximum 500g, diameter 45mm.
Described elevating mechanism comprises the support that is fixed on turntable, the slide block being slidably matched with support and the second driving mechanism that drives slide block movement, described mechanical arm is fixed on slide block, this elevating mechanism is simple in structure, easily realize, because vertical direction mobile accuracy is less demanding, therefore on measuring not impact of operation.
Preferably, described support is provided with two vertical guide rods, and described slide block is set on guide rod, described the second driving mechanism comprises motor, gear set and chain, described slide block is fixedly connected with chain, relies on motor, chain drive, installs and keep in repair all very convenient.
Excessive for fear of slide block slippage on support, described support is provided with the limit switch of two restriction ram travels.
In the time picking and placeing counterweight, to put yard drawer and move near weighing unit or annular are held code-disc in order to realize, described support is provided with two groups of position switchs, is respectively used to control near the movement of slide block height annular is held yard platform and weighing unit.Be every group and comprise two position switchs, be respectively used to be limited in annular and hold yard platform and near the height of weighing unit slippage stroke.
Preferably, described weighing unit be positioned at described breach under, make mechanical arm pick and place the stroke of counterweight the shortest.
Preferably, described the first driving mechanism is made up of the Worm and worm-wheel gearing on servomotor and turntable, makes to pick and place counterweight more accurate.
Preferably, the present invention also comprises the zero testing mechanism of turntable, described zero testing mechanism is made up of the laser pickoff of the laser generator on mounting bracket and near setting corresponding to it, utilizes this zero testing mechanism can eliminate the rotation error of turntable, realizes and picks and places smoothly counterweight.
Because laser generator sends laser compared with longer transmission distance, it is large that hot spot can become, cause laser pickoff can receive laser within the scope of certain angle, thereby the error of causing, the front of described laser generator is provided with two baffle plates, between baffle plate, have slit, laser generator, slit, laser pickoff are on same straight line.
Compared with prior art, beneficial effect of the present invention is:
The present invention can easily realize the difform counterweight of automatic clamping and placing and be positioned on mass comparator, the mass value of counterweight is measured, and number of components is few, compact conformation, fetching process smoothness, loading velocity is fast, motion is reliable, in counterweight loading procedure, can not impact.
Brief description of the drawings
Fig. 1 is the structural representation of counterweight automatic measurement system of the present invention.
Fig. 2 is the structural representation of counterweight fetching device of the present invention.
Fig. 3 is the plan structure schematic diagram of counterweight automatic measurement system shown in Fig. 1.
Fig. 4 is the structural representation that annular of the present invention is held yard platform.
Fig. 5 is the modular structure figure of counterweight automatic measurement system of the present invention.
Embodiment
As shown in Figure 5, a kind of gram group counterweight automatic measurement system, comprises computing machine, control gear and measurement mechanism, and measurement mechanism comprises fixed mount and is arranged on counterweight load carrier, counterweight fetching device and the weight measurement mechanism on fixed mount 1.Wherein control gear adopts PLC controller, and it is connected with computing machine, measurement data can be inputted to Computer Storage, carries out data management, also can read measuring command from computing machine, realizes automatically and measuring.The signal of control gear receiving position switch and laser sensor transmission, sends the corresponding command to servomotor and direct current generator, forms closed-loop control.Certainly this device also can not comprise calculating, directly PLC controller is programmed, and realize automatically and measuring, but metering system and data output format can be more single.
Counterweight fetching device by be arranged on servomotor 20 on fixed mount 1, turntable 21, elevating mechanism and and mechanical arm 24 form, servomotor 20 is connected with turntable 21 by shaft coupling.Elevating mechanism comprises support 22, slide block 23 and driving mechanism, and support 22 is provided with two vertical slide bars 28, and slide block 23 is set on slide bar 28, and mechanical arm 24 is fixed on slide block 23.Driving mechanism is made up of direct current generator 25, gear set and chain 210, and slide block is fixed on chain 210, direct current generator 25 rotating drive slide block slippages Shang Xia 23.
Mechanical arm 24 is by mechanical arm 241, magnet steel 242 and put yard drawer 243 and form, put yard drawer 243 and rely on the absorption affinity of magnet steel 242 to be connected with mechanical arm 241, so can avoid picking and placeing counterweight time, mechanical arm 24 coordinates inaccurate and causes device to damage with weighing unit 31 or carrying position 11.
Counterweight load carrier is to hold yard platform 10 around the annular of elevating mechanism setting, and annular is held yard platform 10 and is arranged in fixed mount, is provided with multiple carryings position 11 above it, and with a breach 12.Weight measurement mechanism is electronic balance 30 in the present embodiment, and the weighing unit 31 of electronic balance 30, carrying position 11 and put yard drawer 243 and be fence type structure are put yard drawer 243 and can realized picking and placeing of counterweight at 11 o'clock by weighing unit 31 and carrying position.
The wide 4mm in the present embodiment fence structure space, the wide 2mm of entity part, allow that positive and negative deviation is 1mm, arctan1/350=0.18 ° (wherein 350 is mechanical arm length), be that turntable 21 running accuracies need be less than 0.18 °, just can guarantee to put yard drawer 243 and can not bump against with carrying position 11, weighing unit 31.
Turntable of the present invention 21 inside are provided with turbine and worm gear train, and repetitive positioning accuracy generally reaches 0.01 °, and ratio of gear is 100: 1.The minimum step angle of servomotor 20 is 0.18 °, and servomotor often makes a move, and turntable 21 rotates 0.01 ° of 0.18 °/100=0.0018 ° <.
In order to realize accurate location, the present invention also comprises the zero testing mechanism of a turntable 21, this zero testing mechanism comprises laser generator 261, slit mechanism 262 and laser pickoff 263, slit mechanism 262 is made up of two baffle plates that are positioned at laser generator front, between baffle plate, have slit, slit, laser generator 261 and laser pickoff 263 are on same level straight line.The width of slit should be controlled at below 0.5mm, and the distance between laser generator 261 and laser pickoff 263 is roughly 10cm left and right.
As shown in Figure 1, in order to control the slippage stroke of slide block 23 on slide bar 28, support 22 is provided with limit switch 261,262, for limit mechanical hand 24 picks and places the vertical shift motion of counterweight at carrying position 11 and weighing unit 31, support 22 is provided with two groups of position switchs, wherein position switch 291,292 picks and places counterweight for controlling mechanical arm 24 on carrying position 11, and position switch 293,294 picks and places counterweight for controlling mechanical arm 24 on weighing unit 31.
System Working Principle of the present invention is as follows:
First need that counterweight 500 to be measured is placed on to annular and hold on the carrying position 11 of yard platform 10, now mechanical arm is in null position A, and power-on, by computer operation, inputs corresponding parameter to PLC controller, and PLC controller is given an order to servomotor 20.
Turntable 21 carries out clear operation by zero testing mechanism, then mechanical arm 24 turns to the below of respective carrier position 11, then direct current generator 25 is worked, mechanical arm rises counterweight 500 is held up, after picking-up, mechanical arm 24 rotates equal angular toward reverse direction, now again carries out clear operation, eliminates rotation error.
Direct current generator 25 works on, and mechanical arm 24 declines, and counterweight 500 is placed on weighing unit 31, and after weighing, PLC controller receives corresponding quality information and is transferred to Computer Storage, and utilizes database to manage.
After detection completes, mechanical arm 24 rises, and the counterweight 500 after detecting is held up, move to null position A, another carries out clear operation, and mechanical arm 24 rotates the top of respective angles to carrying position 11, direct current generator 25 is worked, and mechanical arm 24 declines, and counterweight is placed on carrying position 11.
Clear operation of the present invention refers to that mechanical arm crosses null position A in motion process, then toward reverse direction motion, finally make generating laser 261 aim at laser pickoff 262, that is to say that generating laser 261 needs to aim at laser pickoff 262 twice, with the gap error between eliminating machine.
Claims (4)
1. one kind of gram of group counterweight automatic measurement system, comprise fixed mount, and be arranged on control gear, counterweight load carrier, counterweight fetching device and the weight measurement mechanism with weighing unit on fixed mount, it is characterized in that, described counterweight fetching device comprises turntable, drives the first driving mechanism of turntable, is fixed on the elevating mechanism on turntable and is arranged on the mechanical arm on elevating mechanism;
Described the first driving mechanism is made up of the Worm and worm-wheel gearing on servomotor and turntable;
Described mechanical arm comprises mechanical arm and puts a yard drawer, and mechanical arm connects the one end of putting yard drawer and is provided with magnet steel, puts a yard drawer and is adsorbed on magnet steel;
Described counterweight load carrier is to hold a yard platform around the notched annular of described elevating mechanism, and described annular is held a yard platform and is provided with several carrying positions, described weighing unit be positioned at described breach under;
Described elevating mechanism comprises the support that is fixed on turntable, the slide block being slidably matched with support and the second driving mechanism that drives slide block movement, and described mechanical arm is fixed on slide block;
A described yard drawer, carrying position and the weighing unit put is the fence structure matching;
Described gram of group counterweight automatic measurement system also comprises the zero testing mechanism of turntable, and described zero testing mechanism is made up of the laser pickoff of rack-mount laser generator and near setting corresponding to it;
The front of described laser generator is provided with two baffle plates, has slit between baffle plate, and laser generator, slit, laser pickoff are on same straight line.
2. as claimed in claim 1 gram of group counterweight automatic measurement system, it is characterized in that, described support is provided with two vertical guide rods, and described slide block is set on guide rod, described the second driving mechanism comprises motor, gear set and chain, and described slide block is fixedly connected with chain.
3. as claimed in claim 1 gram of group counterweight automatic measurement system, is characterized in that, described support is provided with the limit switch of two restriction ram travels.
4. as claimed in claim 1 gram of group counterweight automatic measurement system, is characterized in that, described support is provided with two groups of position switchs, is respectively used to control near the movement of slide block height annular is held yard platform and weighing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310042750.0A CN103148923B (en) | 2013-01-31 | 2013-01-31 | Gram group weight automatically measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310042750.0A CN103148923B (en) | 2013-01-31 | 2013-01-31 | Gram group weight automatically measuring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103148923A CN103148923A (en) | 2013-06-12 |
| CN103148923B true CN103148923B (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310042750.0A Expired - Fee Related CN103148923B (en) | 2013-01-31 | 2013-01-31 | Gram group weight automatically measuring system |
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| Country | Link |
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| CN (1) | CN103148923B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092301B (en) * | 2016-08-08 | 2019-11-29 | 山东省计量科学研究院 | Integral type counterweight combines automatic detection mechanism |
| CN111044216B (en) * | 2019-12-31 | 2020-09-25 | 江苏省计量科学研究院(江苏省能源计量数据中心) | Dead weight formula force standard machine weight on-spot weighing device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4433354B2 (en) * | 2000-06-26 | 2010-03-17 | 株式会社エー・アンド・デイ | Weight error measuring device |
| WO2009013812A1 (en) * | 2007-07-24 | 2009-01-29 | A & D Company, Ltd. | Incorporated weight elevator |
| CN101893473B (en) * | 2009-05-19 | 2012-01-25 | 北京航天计量测试技术研究所 | Automatic switching device for bottom-loading balance weights |
| CN201429458Y (en) * | 2009-07-02 | 2010-03-24 | 中国测试技术研究院 | Dead weight type force standard machine of multiple measuring ranges and small force Values |
| CN101706344A (en) * | 2009-07-08 | 2010-05-12 | 中国测试技术研究院 | Independent weight adding force standard machine and independent weight adding method |
| CN101806612B (en) * | 2010-02-05 | 2011-08-31 | 中国计量科学研究院 | Automatic handing system of weight and application thereof |
| CN202420630U (en) * | 2011-06-02 | 2012-09-05 | 山东省计量科学研究院 | Counterweight measurement automatic control device |
| CN202281647U (en) * | 2011-06-02 | 2012-06-20 | 山东省计量科学研究院 | Multi-station bearing mechanism |
| CN202281636U (en) * | 2011-06-02 | 2012-06-20 | 山东省计量科学研究院 | Device for measuring volume of gram weights |
| CN203177948U (en) * | 2013-01-31 | 2013-09-04 | 中国计量学院 | Gram-group weight automatic measurement system |
-
2013
- 2013-01-31 CN CN201310042750.0A patent/CN103148923B/en not_active Expired - Fee Related
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| CN103148923A (en) | 2013-06-12 |
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Granted publication date: 20141203 |