CN102661831B - Reversing arrangement, vibroshock dynamometer machine pull to force value calibrating installation and calibration steps - Google Patents
Reversing arrangement, vibroshock dynamometer machine pull to force value calibrating installation and calibration steps Download PDFInfo
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- CN102661831B CN102661831B CN201210119712.6A CN201210119712A CN102661831B CN 102661831 B CN102661831 B CN 102661831B CN 201210119712 A CN201210119712 A CN 201210119712A CN 102661831 B CN102661831 B CN 102661831B
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- 238000000034 method Methods 0.000 claims description 15
- 238000012986 modification Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
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- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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Abstract
The invention discloses a kind of reversing arrangement, relate to a kind of power conversion device, this reversing arrangement comprises: lower connecting plate, lower fixed bar, location-plate, upper junction plate, upper fixed bar and pressing plate; Location-plate is provided with location-plate through hole, pressing plate is provided with pressing plate through hole; Lower fixed bar upper end is connected with pressing plate, and lower end is connected with lower connecting plate, and middle part is connected with location-plate; Upper fixed bar upper end is connected with upper junction plate, and lower end is connected with location-plate, and middle part connects pressing plate; Lower fixed bar is through location-plate through hole, and upper fixed bar is through pressing plate through hole.Compared with the existing; pulling force suffered by vibroshock sensor can be converted to the pressure suffered by dynamometer by the reversing arrangement of the present invention's protection; thus the pulling force force value on dynamometer suffered by read sensor; thus realize vibroshock dynamometer machine pull to force value calibration, thus successfully solve puzzlement in the industry dynamometer machine for many years pull to a difficult problem for force value calibration.
Description
Technical field
The present invention relates to a kind of vibroshock dynamometer machine truing tool and method, particularly a kind of reversing arrangement, vibroshock dynamometer machine pulls to force value calibrating installation and vibroshock dynamometer machine pulls to force value calibration steps.
Background technology
Damping force test when vibroshock dynamometer machine is mainly used in the Tension and Compression of vibroshock, this test be uniquely reflect each parts general assembly of vibroshock complete after all-round property testing index.The effect of checking on of last quality is played to product.
All the time, industry generally only carries out pressure value calibration to vibroshock dynamometer machine, its method is that the Luo by rotating the vibroshock dynamometer machine leading screw be fixed on vibroshock dynamometer machine crossbeam revolves handle, drive the vibroshock dynamometer machine sensor on vibroshock dynamometer machine crossbeam, press to dynamometer, dynamometer reads the pressure force value A suffered by vibroshock dynamometer machine sensor, if the force value that vibroshock dynamometer machine now shows is B, then the difference of B and A is the instrument error of vibroshock dynamometer machine.Generally speaking, choose equally distributed 5 points in the specified force value of vibroshock dynamometer machine full scale and carry out force value tests.After completing all the other tests of 4 successively, if instrument error exceeds the allowed band of regulation, then by the calibration coefficient of adjustment vibroshock dynamometer machine software, make it meet the requirement of regulation, thus complete calibration operation.
Because vibroshock dynamometer machine does not in use singly have pressure, pull to power in addition, therefore, only pressure test is carried out to vibroshock dynamometer machine and be equivalent to only complete its test job of 1/2nd, lose biased.
Pull to force value calibration in industry is exactly blank out all the time substantially, and indivedual vibroshock dynamometer machine manufacturer carries out the force value calibration pulled to by the method for hanging counterweight, its method counterweight is directly hung on vibroshock dynamometer machine sensor lower end.But due to the vibroshock dynamometer machine sensor under vibroshock dynamometer machine vibroshock dynamometer machine crossbeam and the space between vibroshock dynamometer machine platform of principal too narrow and small, generally can only be suspended to tens kilograms, this will produce following drawback: one is the counterweight of tens kilograms is lifted to the height of about 1.6 meters, be suspended on vibroshock dynamometer machine sensor, difficulty is larger again; Two is that people, machine security incident easily occur, once lanyard fracture, the height of 1.6 meters pounds the counterweight of lower tens kilograms, and people, machine, counterweight are all vulnerable to damage; Three is poor accuracy, because the full scale of most vibroshock dynamometer machine is all at about 1000 kilograms, by uniform 5 words of carrying out calibrating of full scale, then need to hang 200 kilograms, 400 kilograms, 600 kilograms, 800 kilograms and 1000 kilograms successively, if the counterweight only hanging tens kilograms carries out testing, its accuracy is obviously worth discussion.And the small space below vibroshock dynamometer machine sensor can not hold the counterweight of above-mentioned hundreds and thousands of kilograms, and so heavy counterweight also very not easily hangs up the height of 1.6 meters.Therefore it is not proper for carrying out the calibration of vibroshock dynamometer machine force value by the method for hanging counterweight.
Summary of the invention
For above-mentioned weak point, one of the purpose of this utility model is just to provide a kind of reversing arrangement, pulling force suffered by vibroshock sensor can be converted to the pressure suffered by dynamometer by this reversing arrangement, thus the pulling force force value on dynamometer suffered by read sensor, thus the force value that pulls to realizing vibroshock dynamometer machine is calibrated, because the dynamometry scope of dynamometer from tens newton to hundreds of thousands newton not etc., therefore can carry out force value calibration according to the dynamometer of the corresponding sizes of the different measurement range selection of dynamometer machine sensor.And dynamometer profile is very little, not by the restriction of small space under dynamometer machine sensor, therefore uses this device, the calibration of all range ability dynamometer machines can be carried out in theory.Thus successfully solve puzzlement in the industry dynamometer machine for many years pull to a difficult problem for force value calibration.
Technical scheme is: a kind of reversing arrangement, a kind of reversing arrangement, and this reversing arrangement comprises: lower connecting plate, lower fixed bar, location-plate, upper junction plate, upper fixed bar and pressing plate; Location-plate is provided with location-plate through hole, pressing plate is provided with pressing plate through hole; Lower fixed bar upper end is connected with pressing plate, and lower end is connected with lower connecting plate, and middle part is connected with location-plate; Upper fixed bar upper end is connected with upper junction plate, and lower end is connected with location-plate, and middle part connects pressing plate; Lower fixed bar is through location-plate through hole, and upper fixed bar is through pressing plate through hole.
As preferably, fixed bar and upper junction plate and location-plate adopt screw thread to be rigidly connected, and lower fixed bar and pressing plate and lower connecting plate adopt screw thread to be rigidly connected.
As preferably, described location-plate through-hole diameter about 8mm larger than lower fixed bar diameter, pressing plate through-hole diameter about 8mm larger than upper fixed bar diameter.
As preferably, described lower fixed bar and location-plate through hole axial line overlap, and upper fixed bar and pressing plate through hole axial line overlap.
Two of object of the present invention is to provide a kind of vibroshock dynamometer machine to pull to force value calibrating installation, the height counterweight of tens kilograms being lifted to about 1.6 meters is not needed when this calibrating installation is calibrated, people, machine security incident can not be there is, and be that accuracy is good, pull to force measurement scope large.
Technical scheme is: a kind of vibroshock dynamometer machine pulls to force value calibrating installation, and this calibrating installation comprises reversing arrangement described above and dynamometer, and described dynamometer is placed between described location-plate and described pressing plate.
As preferably, this calibrating installation also comprises a coupling arrangement, and this coupling arrangement is connected with described reversing arrangement lower connecting plate.
As preferably, described coupling arrangement is arc link.
Three of object of the present invention is that providing a kind of calibrates the method that vibroshock dynamometer machine pulls to force value, and it is good that the method calibration vibroshock dynamometer machine pulls to force value accuracy, pulls to force measurement scope large, simple to operate and safety.
Technical scheme is: a kind ofly calibrate the method that vibroshock dynamometer machine pulls to force value, and the method is converted into pressure and detects by pulling to power and calibrate vibroshock dynamometer machine and pull to force value.As preferably, described the method adopts vibroshock dynamometer machine recited above to pull to force value calibrating installation.
As preferably, vibroshock dynamometer machine pulls to the force value error of indication and is
after the calibration coefficient of results modification vibroshock dynamometer machine software accordingly, again detect, until the error of indication meets the requirements.
Compared with prior art, beneficial effect of the present invention is:
1) be suspended to again after not needing that the counterweight of tens kilograms is lifted to the height of about 1.6 meters on vibroshock dynamometer machine sensor, therefore processing ease.
2) people, machine security incident can not be there is.
3), compared with detecting with counterweight, accuracy is good, pulls to force measurement scope large.
4) not by the restriction of the small space below vibroshock dynamometer machine sensor.
Accompanying drawing explanation
Fig. 1 is reversing arrangement one-piece construction schematic diagram;
Fig. 2 is the one-piece construction schematic diagram that a vibroshock dynamometer machine pulls to force value calibrating installation;
Fig. 3 is the one-piece construction schematic diagram that another vibroshock dynamometer machine pulls to force value calibrating installation;
Fig. 4 is that vibroshock dynamometer machine pulls to force value calibrating installation one and uses embodiment view.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Reversing arrangement as shown in Figure 1, this reversing arrangement forms primarily of lower connecting plate 1, lower fixed bar 21, location-plate 3, upper junction plate 4, upper fixed bar 22 and pressing plate 5.Lower fixed bar 21 upper end is connected with pressing plate 5, and lower end is connected with lower connecting plate 1, and middle part is connected with location-plate 3.Upper fixed bar 22 upper end is connected with upper junction plate 4, and lower end is connected with location-plate 3, and middle part connects pressing plate 5.
Upper fixed bar 22 adopts screw thread to be rigidly connected with upper junction plate 4 and location-plate 3, and lower fixed bar 21 adopts screw thread to be rigidly connected with pressing plate 5 and lower connecting plate 1.
Lower fixed bar 21 through the location-plate through hole 31 of location-plate 3, diameter about the 8mm larger than the diameter of lower fixed bar 21 of through hole, the impact of zerofriction force when moving upward to make location-plate 3 and between lower fixed bar 21.
Upper fixed bar 22 through the pressing plate through hole 51 of pressing plate 5, diameter about the 8mm larger than the diameter of upper fixed bar 22 of pressing plate through hole 51, the impact of zerofriction force when moving upward to make upper fixed bar 22 and between pressing plate through hole 51.
Commutation in reversing arrangement refers to the power of pulling to be converted into pressure.
Vibroshock dynamometer machine as shown in Figure 2 pulls to force value calibrating installation, and this vibroshock dynamometer machine pulls to force value calibrating installation and forms primarily of reversing arrangement and dynamometer 6.
Reversing arrangement forms primarily of lower connecting plate 1, lower fixed bar 21, location-plate 3, upper junction plate 4, upper fixed bar 22 and pressing plate 5.Lower fixed bar 21 upper end is connected with pressing plate 5, and lower end is connected with lower connecting plate 1, and middle part is connected with location-plate 3.Upper fixed bar 22 upper end is connected with upper junction plate 4, and lower end is connected with location-plate 3, and middle part connects pressing plate 5.
Upper fixed bar 22 adopts screw thread to be rigidly connected with upper junction plate 4 and location-plate 3, and lower fixed bar 21 adopts screw thread to be rigidly connected with pressing plate 5 and lower connecting plate 1.
Lower fixed bar 21 through the location-plate through hole 31 of location-plate 3, diameter about the 8mm larger than the diameter of lower fixed bar 21 of through hole, the impact of zerofriction force when moving upward to make location-plate 3 and between lower fixed bar 21.
Upper fixed bar 22 through the pressing plate through hole 51 of pressing plate 5, diameter about the 8mm larger than the diameter of upper fixed bar 22 of pressing plate through hole 51, the impact of zerofriction force when moving upward to make upper fixed bar 22 and between pressing plate through hole 51.
Dynamometer 6 is placed between location-plate 3 and pressing plate 5.
Vibroshock dynamometer machine as shown in Figure 3 pulls to force value calibrating installation, and this vibroshock dynamometer machine pulls to force value calibrating installation and forms primarily of reversing arrangement, dynamometer 6 and coupling arrangement 7.Coupling arrangement 7 one aspect prevents vibroshock dynamometer machine and reversing arrangement from mutually colliding and causing calibration error, vibroshock dynamometer machine and reversing arrangement is coupled together on the other hand.
Reversing arrangement forms primarily of lower connecting plate 1, lower fixed bar 21, location-plate 3, upper junction plate 4, upper fixed bar 22 and pressing plate 5.Lower fixed bar 21 upper end is connected with pressing plate 5, and lower end is connected with lower connecting plate 1, and middle part is connected with location-plate 3.Upper fixed bar 22 upper end is connected with upper junction plate 4, and lower end is connected with location-plate 3, and middle part connects pressing plate 5.
Upper fixed bar 22 adopts screw thread to be rigidly connected with upper junction plate 4 and location-plate 3, and lower fixed bar 21 adopts screw thread to be rigidly connected with pressing plate 5 and lower connecting plate 1.
Lower fixed bar 21 through the location-plate through hole 31 of location-plate 3, diameter about the 8mm larger than the diameter of lower fixed bar 21 of through hole, the impact of zerofriction force when moving upward to make location-plate 3 and between lower fixed bar 21.
Upper fixed bar 22 through the pressing plate through hole 51 of pressing plate 5, diameter about the 8mm larger than the diameter of upper fixed bar 22 of pressing plate through hole 51, the impact of zerofriction force when moving upward to make upper fixed bar 22 and between pressing plate through hole 51.
Dynamometer 6 is placed between location-plate 3 and pressing plate 5, and coupling arrangement 7 is connected with reversing arrangement by reversing arrangement lower connecting plate 1.Coupling arrangement 7 can be arc link, also can be the coupling arrangement of other shape, as long as can prevent vibroshock dynamometer machine and reversing arrangement from mutually colliding and vibroshock dynamometer machine and reversing arrangement be coupled together.
Use embodiment 1
As shown in Figure 4, vibroshock dynamometer machine pulls to force value calibrating installation and forms primarily of reversing arrangement, dynamometer 6 and coupling arrangement 7.Coupling arrangement 7 is arc link.
Reversing arrangement forms primarily of lower connecting plate 1, lower fixed bar 21, location-plate 3, upper junction plate 4, upper fixed bar 22 and pressing plate 5.Lower fixed bar 21 upper end is connected with pressing plate 5, and lower end is connected with lower connecting plate 1, and middle part is connected with location-plate 3.Upper fixed bar 22 upper end is connected with upper junction plate 4, and lower end is connected with location-plate 3, and middle part connects pressing plate 5.
Upper fixed bar 22 adopts screw thread to be rigidly connected with upper junction plate 4 and location-plate 3, and lower fixed bar 21 adopts screw thread to be rigidly connected with pressing plate 5 and lower connecting plate 1.
Lower fixed bar 21 through the location-plate through hole 31 of location-plate 3, diameter about the 8mm larger than the diameter of lower fixed bar 21 of through hole, the impact of zerofriction force when moving upward to make location-plate 3 and between lower fixed bar 21.
Upper fixed bar 22 through the pressing plate through hole 51 of pressing plate 5, diameter about the 8mm larger than the diameter of upper fixed bar 22 of pressing plate through hole 51, the impact of zerofriction force when moving upward to make upper fixed bar 22 and between pressing plate through hole 51.
Lower connecting plate 1, fixed bar 21 and pressing plate 5 are fixed, location-plate 3, upper fixed bar 22 and upper junction plate 4 under the effect of sensor pulling force can along under fixed bar 21 upwards make vertical frictionless motion.
For reducing the experimental error in measuring process better, when reversing arrangement is installed, two axial lines of lower fixed bar 21 and the axial line of location-plate through hole 31 should be made to overlap respectively, diameter due to location-plate through hole 31 8mm larger than the diameter of lower fixed bar 21, after two axial lines are adjusted and are overlapped, naturally just define the space of 4mm between lower fixed bar 21 and the inwall of location-plate through hole 31, thus effectively prevent to be formed when location-plate 3 moves upward and between lower fixed bar 21 and rub, cause the error of measurement.In like manner, the axial line of upper fixed bar 22 and pressing plate through hole 51 also should be transferred to same axial location, to avoid friction, introduces measuring error.
Dynamometer 6 is placed between location-plate 3 and pressing plate 5, and coupling arrangement 7 is connected with reversing arrangement lower connecting plate 1 by pin 16.
Vibroshock dynamometer machine forms primarily of vibroshock dynamometer machine board 8, vibroshock dynamometer machine column 9, vibroshock dynamometer machine crossbeam 10, vibroshock dynamometer machine frame 11, vibroshock dynamometer machine leading screw 12, vibroshock dynamometer machine spiral handle 13 and vibroshock dynamometer machine sensor 15, vibroshock dynamometer machine board 8 also has vibroshock dynamometer machine platform 17, and the composition such as computer.
Reversing arrangement converts the power that pulls to suffered by vibroshock dynamometer machine sensor 15 to pressure suffered by dynamometer 6.
Coupling arrangement 7 is fixed on vibroshock dynamometer machine board 8, coupling arrangement 7 one aspect prevents vibroshock dynamometer machine platform 17 and reversing arrangement from mutually colliding and causing calibration error, vibroshock dynamometer machine board and reversing arrangement are coupled together on the other hand, the upper junction plate 4 on reversing arrangement top is connected with vibroshock dynamometer machine sensor 15 lower end by pin 14.
Reversing arrangement principle of work: dynamometer 6 is placed in the centre position, room between location-plate 3 and pressing plate 5, i.e. the centre position of location-plate 3.When upper junction plate 4, upper fixed bar 22 and the effect of location-plate 3 overall tension power, during upward vertical movement, drive the dynamometer 6 on location-plate 3 to move upward together, the upper end of dynamometer 6 starts close to fixed pressing plate 5; Pressing plate 5, lower fixed bar 21 and lower connecting plate 1 is because be linked together with the coupling arrangement 7 be fixed on vibroshock dynamometer machine 8 by the pin 16 on lower connecting plate 1, and such lower connecting plate 1, fixed bar 21 and pressing plate 56 are fixed.When dynamometer 6 is subject to the extruding of fixed pressing plate 5 and the location-plate 3 that moves upward, just the size of force value has been indicated, when being loaded into the load force value arranged in advance, stop loading, according to the principle of balance between two forces in mechanics, the extruding force suffered by dynamometer is the value of thrust on reversing arrangement suffered by end sensor.So far, reversing arrangement achieves smoothly and pulls to force value to the conversion pressing to force value.
During calibration, rotary vibration damper dynamometer machine spiral handle 13, because vibroshock dynamometer machine screw mandrel 12 and vibroshock dynamometer machine frame 11 are that Luo revolves secondary connection, thus drive vibroshock dynamometer machine crossbeam 10 to rise, thus give vibroshock dynamometer machine sensor 15 be applied with a direction upwards pull to force value, again force value is sent to the top of reversing arrangement by pin 14, drive location-plate 3 and fixed bar 22 and dynamometer 6 to move upward; The bottom of reversing arrangement is again that namely pressing plate 5 is fixed with vibroshock dynamometer machine board 8 by Luo bolt gun iron link all-in-one-piece; Thus the top of formation reversing arrangement is toward pull-up, the bottom of reversing arrangement maintains static, and the dynamometer 6 be clipped in the middle of reversing arrangement is subject to the extruding of upwards tensile force f, has just indicated the pulling force size B suffered by vibroshock dynamometer machine sensor 15.Now dynamometer machine display screen also can show a force value A, relative error
be the error of indication of dynamometer machine, after the calibration coefficient of results modification vibroshock dynamometer machine software accordingly, again detect, until the error of indication meets the requirements, what can realize vibroshock dynamometer machine pulls to force value calibration.General selection sensor full scale uniform 5 detected by cautious (namely 20%, 40%, 60%, 80%, 100%5 of full scale by being examined).
Above-mentioned embodiment is only unrestricted as explanation of the present invention; scope also should comprise those apparent conversions to those skilled in the art, conversion, change or substitute; and in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (7)
1. a reversing arrangement, is characterized in that this reversing arrangement comprises: lower connecting plate, lower fixed bar, location-plate, upper junction plate, upper fixed bar and pressing plate; Location-plate is provided with location-plate through hole, pressing plate is provided with pressing plate through hole; Lower fixed bar upper end is connected with pressing plate, and lower end is connected with lower connecting plate, and middle part is connected with location-plate; Upper fixed bar upper end is connected with upper junction plate, and lower end is connected with location-plate, and middle part connects pressing plate; Lower fixed bar is through location-plate through hole, and upper fixed bar is through pressing plate through hole; Described commutation refers to the power of pulling to be converted into pressure;
Fixed bar and upper junction plate and location-plate adopt screw thread to be rigidly connected, and lower fixed bar and pressing plate and lower connecting plate adopt screw thread to be rigidly connected;
Described location-plate through-hole diameter about 8mm larger than lower fixed bar diameter, pressing plate through-hole diameter about 8mm larger than upper fixed bar diameter.
2. reversing arrangement according to claim 1, is characterized in that: described lower fixed bar and location-plate through hole axial line overlap, and upper fixed bar and pressing plate through hole axial line overlap.
3. vibroshock dynamometer machine pulls to a force value calibrating installation, it is characterized in that: this calibrating installation comprises reversing arrangement described in any one of claim 1-2 and dynamometer, and described dynamometer is arranged between described location-plate and described pressing plate.
4. vibroshock dynamometer machine according to claim 3 pulls to force value calibrating installation, it is characterized in that: this calibrating installation also comprises a coupling arrangement, and this coupling arrangement is connected with described reversing arrangement lower connecting plate.
5. vibroshock dynamometer machine according to claim 4 pulls to force value calibrating installation, it is characterized in that: described coupling arrangement is arc link.
6. calibrate the method that vibroshock dynamometer machine pulls to force value for one kind, it is characterized in that: the method is converted into pressure and detects by pulling to power and calibrate vibroshock dynamometer machine and pull to force value, and the method adopts vibroshock dynamometer machine according to claim 3 to pull to force value calibrating installation simultaneously.
7. calibration vibroshock dynamometer machine according to claim 6 pulls to the method for force value, it is characterized in that: vibroshock dynamometer machine pulls to the force value error of indication and is
, after the calibration coefficient of results modification vibroshock dynamometer machine software accordingly, again detect, until the error of indication meets the requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210119712.6A CN102661831B (en) | 2012-04-23 | 2012-04-23 | Reversing arrangement, vibroshock dynamometer machine pull to force value calibrating installation and calibration steps |
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| CN201210119712.6A CN102661831B (en) | 2012-04-23 | 2012-04-23 | Reversing arrangement, vibroshock dynamometer machine pull to force value calibrating installation and calibration steps |
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| CN102661831A CN102661831A (en) | 2012-09-12 |
| CN102661831B true CN102661831B (en) | 2016-03-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108132124A (en) * | 2016-11-30 | 2018-06-08 | 北京航天计量测试技术研究所 | Zero passage continuous force calibrating device for sensors |
| CN109114267A (en) * | 2018-10-09 | 2019-01-01 | 中国船舶重工集团公司第七0五研究所 | A kind of structure improving underwater sailing body floatation pod safety valve stability |
| CN109489896A (en) * | 2018-12-03 | 2019-03-19 | 江西洪都航空工业集团有限责任公司 | The small horizontal pressure metering device of force value dynamometer |
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| CN1174324A (en) * | 1996-08-21 | 1998-02-25 | 王绍光 | Calibration method and equipment for electronic balance |
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- 2012-04-23 CN CN201210119712.6A patent/CN102661831B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5674637A (en) * | 1979-11-26 | 1981-06-20 | Mitsubishi Heavy Ind Ltd | Load device of mechanical load |
| CN1174324A (en) * | 1996-08-21 | 1998-02-25 | 王绍光 | Calibration method and equipment for electronic balance |
| CN2414410Y (en) * | 2000-01-20 | 2001-01-10 | 李福安 | Calibration tester for deterioration testing machine |
| CN201555780U (en) * | 2009-12-23 | 2010-08-18 | 东营市盛基环保工程有限公司 | Multifunctional wood adhesive bonding strength testing machine |
| JP2011137773A (en) * | 2009-12-29 | 2011-07-14 | Fuji Electric Co Ltd | Tension sensor calibration method |
| CN102607980A (en) * | 2012-03-14 | 2012-07-25 | 安徽省电力科学研究院 | Tension-pressure conversion aid for calibration of tensile machine |
| CN202661224U (en) * | 2012-04-23 | 2013-01-09 | 四川宁江山川机械有限责任公司 | Reversing device and shock absorber indicator pull force calibration device |
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