CN102116733B - Simple measurement device for driving friction coefficient of belt - Google Patents
Simple measurement device for driving friction coefficient of belt Download PDFInfo
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- CN102116733B CN102116733B CN2010102880012A CN201010288001A CN102116733B CN 102116733 B CN102116733 B CN 102116733B CN 2010102880012 A CN2010102880012 A CN 2010102880012A CN 201010288001 A CN201010288001 A CN 201010288001A CN 102116733 B CN102116733 B CN 102116733B
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Abstract
The invention relates to the field of material measurement, especially to a simple measurement device for the driving friction coefficient of a belt, which is convenient in measurement and easy in processing, converting and calculating measured data and which is provided with a supporting plate, an idler pulley shaft, a belt pulley shaft to be measured, an idler pulley and a belt pulley to be measured, wherein the supporting plate is provided with a guiding groove; the belt pulley shaft is fixedly connected with the supporting plate above one side of the guiding groove, a rack is fixedly connected with the back surface of the supporting plate; the belt pulley shaft to be measured penetrates through the guiding groove to be connected with a gear; the supporting plate is provided with a marked line, the upper end of a belt to be measured is fixedly connected with a pull tension gauge, and the belt to be measured extends downwards from the outer side of the idler pulley in plumb direction in order to be connected with a standard counterweight. The simple measurement device for the driving friction coefficient of the belt has simple structure, can achieve convenient measurement in two measurement ways and is easy in processing and calculating measured data.
Description
Technical field
The present invention relates to the Materials Measurement field, especially a kind of convenient measurement, the Measurement and Data Processing conversion Calculation is easy to belt gear friction factor ordinary surveying device.
Background technology
The measurement mechanism of coefficient of friction can be from the invention of notification number 2391193Y, and disclosed coefficient of friction analyzer obtains understanding; In the designing and calculating of belt drive system; Coefficient of friction between belt and belt pulley is an important characteristic parameter very, because bel-drivenn singularity, the general apparatus structure of measuring this coefficient of friction is all complicated; Cost of manufacture is high, and the Measurement and Data Processing conversion Calculation is also comparatively loaded down with trivial details.Its weak point becomes problem demanding prompt solution.
Summary of the invention
The objective of the invention is in order to overcome the apparatus structure complicacy of coefficient of friction between present measurement belt and belt pulley; The deficiency that the Measurement and Data Processing conversion Calculation is loaded down with trivial details; A kind of convenient measurement is provided, and the Measurement and Data Processing conversion Calculation is easy to belt gear friction factor ordinary surveying device.
Concrete technical scheme of the present invention is:
A kind of belt gear coefficient of friction ordinary surveying device; Said belt gear coefficient of friction ordinary surveying device has support plate, idler shaft one, Pulley shaft to be measured, said support plate and is provided with guide groove along vertical, and the width of said guide groove and Pulley shaft to be measured are adaptive; Said idler shaft one is fixedly connected with support plate in guide groove one side, and said belt gear coefficient of friction ordinary surveying device has tooth bar, and said tooth bar is parallel with guide groove, and is fixedly connected with the support plate back side; Said belt gear friction factor ordinary surveying device has the gear adaptive with tooth bar, and Pulley shaft to be measured passes guide groove and is fixedly connected with gear; Said belt gear coefficient of friction ordinary surveying device has idle pulley one, belt pulley to be measured; Said belt pulley to be measured is provided with the spanner jack; Said idle pulley one articulates with idler shaft one; Said belt pulley to be measured and Pulley shaft to be measured articulate; Said support plate is provided with mark line one; The position of mark line one is between idler shaft one and guide groove; Said mark line is held with idle pulley one upper semicircumference tangent one by one, when the other end is lower than Pulley shaft to be measured and is in the guide groove upper end position, and the low spot of belt pulley circumference to be measured; Said belt gear friction factor ordinary surveying device has tautness meter above belt pulley to be measured; Said belt gear friction factor ordinary surveying device has standard weight block, belt to be measured; Said belt to be measured upper end is fixedly connected with tautness meter; Said belt to be measured is tangent to extending below with the belt pulley to be measured outside along vertical; Through second circumference of belt pulley to be measured be tilted to and idle pulley one upper semicircumference tangent, and be fixedly connected from idle pulley one outside along vertical to extending below with the standard weight block.This belt gear coefficient of friction ordinary surveying apparatus structure is simple, and belt pulley to be measured, belt to be measured, idle pulley one can be changed by measurement requirement.
As preferably: said idler shaft one is fixedly connected with support plate above guide groove one side; Said belt gear friction factor ordinary surveying device has idler shaft two, idle pulley two, and said idler shaft two is fixedly connected with support plate below the guide groove of idler shaft one homonymy; The horizontal range of said idler shaft two and guide groove is less than the horizontal range of idler shaft one with guide groove; Said idle pulley two articulates with idler shaft two; Said support plate is provided with mark line two; The position of mark line two is between idler shaft two and guide groove, and said mark line 21 ends and idle pulley two upper semicircumferences are tangent, and the other end is lower than Pulley shaft to be measured; When being in the guide groove upper end position, the low spot of belt pulley circumference to be measured.Also can be with belt to be measured without idle pulley one, and be tilted to down with idle pulley two upper semicircumferences tangently through second circumference of belt pulley to be measured, and be fixedly connected from idle pulley two outsides along vertical to extending below with the standard weight block; Belt pulley to be measured, belt to be measured, idle pulley two can be changed by measurement requirement.According to the friction factor numerical range, many a kind of measurements and the account form of Measurement and Data Processing.
As preferably: said mark line one is 41.93 degree with the angle of horizontal direction; Said mark line two is 32.7 degree with the angle of horizontal direction.When the angle of mark line one and horizontal direction is 41.93 when spending, Measurement and Data Processing can be reduced to the computing formula of calculating by common logarithm; When the angle of mark line two and horizontal direction is 32.7 when spending, Measurement and Data Processing can be reduced to the computing formula of calculating by natural logarithm; It is easier that measurement data is calculated.
As preferably: the weight of said standard weight block is equal to or greater than 10kg.Make friction force and belt distortional stress between idle pulley and belt to be measured be reduced to and to ignore to the influence of measurement result.
As preferably: said mark line one, the straight line that mark line two extends into for continuous score lines or spacer holes.Mark is clear, and is not easy to wear.
This belt gear friction factor ordinary surveying device has two kinds of measuring methods:
The measuring process of measuring method one is: after installing belt pulley to be measured, belt pulley to be measured is rotated through the spanner jack with spanner, under gear and tooth bar effect, rise to the guide groove top; Load onto belt to be measured; Belt to be measured upper end is fixedly connected with tautness meter; Adjustment tautness meter position makes belt to be measured tangent to extending below with the belt pulley to be measured outside along vertical; Through second circumference of belt pulley to be measured be tilted to and idle pulley one upper semicircumference tangent, and be fixedly connected from idle pulley one outside along vertical to extending below with the standard weight block, make belt to be measured be in tension; Pass through spanner this moment with belt pulley reverse rotation to be measured; Under gear and tooth bar effect, descending along with belt pulley to be measured, belt is overlapping to mark one gradually; When belt and mark one are overlapping; Write down tautness meter indicating value F, just can calculate the coefficient of friction μ=lg (G/F) of belt and belt pulley, G is the gravity of standard weight block.
The measuring process of measuring method two is: after installing belt pulley to be measured, belt pulley to be measured is rotated through the spanner jack with spanner, under gear and tooth bar effect, rise to the guide groove top; Load onto belt to be measured; Belt to be measured upper end is fixedly connected with tautness meter; Adjustment tautness meter position makes belt to be measured tangent to extending below with the belt pulley to be measured outside along vertical; Be tilted to down with idle pulley two upper semicircumferences tangently through second circumference of belt pulley to be measured, and be fixedly connected, make belt to be measured be in tension from the idle pulley outside along vertical to extending below with the standard weight block; This moment through spanner with belt pulley reverse rotation to be measured, under gear and tooth bar effect, descending along with belt pulley to be measured; Belt is overlapping to mark two gradually; When belt and mark two are overlapping, write down tautness meter indicating value F, just can calculate the coefficient of friction μ of belt and belt pulley=
Ln(G/F).
The principle of this belt gear coefficient of friction ordinary surveying device is:
Euler's formula according to the flexible body friction: in the belt gear, guarantee that the non-slip condition of belt gear is: advancing side of belt pulling force Tn satisfies with the ratio of receding side of belt pulling force tn:
Wherein, θ is the belt contact on the belt pulley, and μ is the friction factor between belt and belt pulley.
In this measurement mechanism, slide owing to exist relatively between belt pulley to be measured and the belt to be measured, therefore have this moment:
In this measurement mechanism,, therefore require added weight block quality to be not less than 10Kg in order to reduce friction force and belt distortional stress to be measured between idle pulley and belt to be measured to the influence of measurement result.
When making belt to be measured and mark one overlapping according to measuring method one, the belt contact of belt pulley to be measured is 131.93 °, and being scaled radian is 2.303, and according to the Euler's formula of flexible body friction, have this moment:
of flexible body friction
When making belt to be measured and mark two overlapping according to measuring method two, the belt contact of belt pulley to be measured is 57.3 °, and being scaled radian is 1, and according to the Euler's formula of flexible body friction, have this moment:
The invention has the beneficial effects as follows:
This belt gear coefficient of friction ordinary surveying apparatus structure is simple, and convenient measurement has two kinds of measuring methods: belt pulley to be measured, belt to be measured, idle pulley one, idle pulley two can be changed by measurement requirement.The Measurement and Data Processing conversion Calculation is easy.
Description of drawings
Fig. 1 is the structural representation of measuring method one of the present invention;
Fig. 2 is the rear view of Fig. 1;
Fig. 3 is the structural representation of measuring method two of the present invention.
Embodiment
Below in conjunction with shown in the accompanying drawing the present invention is described further.
Shown in accompanying drawing 1, accompanying drawing 2: belt gear coefficient of friction ordinary surveying device has support plate 1, idler shaft 1, Pulley shaft to be measured 3; Support plate is provided with guide groove 11 along vertical, and guide groove two ends are circular arc, and the width dimensions of guide groove is than the big 0.03mm of Pulley shaft diameter to be measured; Idler shaft one is connected with the support plate interference fit above guide groove one side; Tooth bar 4 is parallel with guide groove, and is connected with support plate back side screw; Gear 5 is adaptive with tooth bar, and Pulley shaft to be measured passes guide groove and is connected with gear is strong; Idle pulley 1 and idler shaft one clearance fit; Belt pulley 7 to be measured is provided with spanner jack 71; Belt pulley to be measured and Pulley shaft clearance fit to be measured; Support plate is provided with mark line 1, and the position of mark line one is between idler shaft one and guide groove, and mark line is held with idle pulley one upper semicircumference tangent one by one, when the other end is lower than Pulley shaft to be measured and is in the guide groove upper end position, and the low spot of belt pulley circumference to be measured; Mark line one is 41.93 degree with the angle of horizontal direction; Above belt pulley to be measured, has tautness meter 9; Belt to be measured 12 upper ends are connected with the tautness meter screw; Belt to be measured is tangent to extending below with the belt pulley to be measured outside along vertical; Through second circumference of belt pulley to be measured be tilted to and idle pulley one upper semicircumference tangent, and be connected from idle pulley one outside along vertical to extending below with standard weight block 10 screws; The standard weight block heavily is 10kg.Idler shaft 2 13 is connected with the support plate interference fit below the guide groove of idler shaft one homonymy; The horizontal range of idler shaft two and guide groove is less than the horizontal range of idler shaft one with guide groove; Idle pulley 2 14 and idler shaft two clearance fit; Support plate is provided with mark line 2 15; The position of mark line two is between idler shaft two and guide groove; Said mark line 21 ends and idle pulley two upper semicircumferences are tangent, when the other end is lower than Pulley shaft to be measured and is in the guide groove upper end position, and the low spot of belt pulley circumference to be measured; Mark line two is 32.7 degree with the angle of horizontal direction.Mark line one, mark line two are the straight line that continuous score lines or spacer holes extend into.
The present invention has two kinds of measuring methods:
The measuring process of measuring method one is shown in accompanying drawing 1: after installing belt pulley to be measured, belt pulley to be measured is rotated through the spanner jack with spanner, under gear and tooth bar effect, rise to the guide groove top; Load onto belt to be measured; Belt to be measured upper end is fixedly connected with tautness meter; Adjustment tautness meter position makes belt to be measured tangent to extending below with the belt pulley to be measured outside along vertical; Through second circumference of belt pulley to be measured be tilted to and idle pulley one upper semicircumference tangent, and be fixedly connected from idle pulley one outside along vertical to extending below with the standard weight block, make belt to be measured be in tension; Pass through spanner this moment with belt pulley reverse rotation to be measured; Under gear and tooth bar effect, descending along with belt pulley to be measured, belt is overlapping to mark one gradually; When belt and mark one are overlapping; Write down tautness meter indicating value F, just can calculate the coefficient of friction μ=lg (G/F) of belt and belt pulley, G is the gravity of standard weight block.
The measuring process of measuring method two is shown in accompanying drawing 1: after installing belt pulley to be measured, belt pulley to be measured is rotated through the spanner jack with spanner, under gear and tooth bar effect, rise to the guide groove top; Load onto belt to be measured; Belt to be measured upper end is fixedly connected with tautness meter; Adjustment tautness meter position makes belt to be measured tangent to extending below with the belt pulley to be measured outside along vertical; Be tilted to down with idle pulley two upper semicircumferences tangently through second circumference of belt pulley to be measured, and be fixedly connected, make belt to be measured be in tension from the idle pulley outside along vertical to extending below with the standard weight block; This moment through spanner with belt pulley reverse rotation to be measured, under gear and tooth bar effect, descending along with belt pulley to be measured; Belt is overlapping to mark two gradually; When belt and mark two are overlapping, write down tautness meter indicating value F, just can calculate the coefficient of friction μ=ln (G/F) of belt and belt pulley.
This belt gear coefficient of friction ordinary surveying apparatus structure is simple, and convenient measurement has two kinds of measuring methods: belt pulley to be measured, belt to be measured, idle pulley one, idle pulley two can be changed by measurement requirement.The Measurement and Data Processing conversion Calculation is easy.
The principle of this belt gear coefficient of friction ordinary surveying device is:
Euler's formula according to the flexible body friction: in the belt gear, guarantee that the non-slip condition of belt gear is: advancing side of belt pulling force Tn satisfies with the ratio of receding side of belt pulling force tn:
Wherein, θ is the belt contact on the belt pulley, and μ is the friction factor between belt and belt pulley.
In this measurement mechanism, slide owing to exist relatively between belt pulley to be measured and the belt to be measured, therefore have this moment:
In this measurement mechanism,, therefore require added weight block quality to be not less than 10Kg in order to reduce friction force and belt distortional stress to be measured between idle pulley and belt to be measured to the influence of measurement result.
When making belt to be measured and mark one overlapping according to measuring method one, the belt contact of belt pulley to be measured is 131.93 °, and being scaled radian is 2.303, and according to the Euler's formula of flexible body friction, have this moment:
When making belt to be measured and mark two overlapping according to measuring method two, the belt contact of belt pulley to be measured is 57.3 °, and being scaled radian is 1, and according to the Euler's formula of flexible body friction, have this moment:
The invention has the beneficial effects as follows:
This belt gear coefficient of friction ordinary surveying apparatus structure is simple, and convenient measurement has two kinds of measuring methods: belt pulley to be measured, belt to be measured, idle pulley one, idle pulley two can be changed by measurement requirement.The Measurement and Data Processing conversion Calculation is easy.
Claims (5)
1. belt gear coefficient of friction ordinary surveying device, it is characterized in that: said belt gear coefficient of friction ordinary surveying device has support plate (1), idler shaft one (2), Pulley shaft to be measured (3); Said support plate is provided with guide groove (11) along vertical, and the width of said guide groove and Pulley shaft to be measured are adaptive; Said idler shaft one is fixedly connected with support plate in a side of guide groove, and said belt gear coefficient of friction ordinary surveying device has tooth bar (4), and said tooth bar is parallel with guide groove, and is fixedly connected with the support plate back side; Said belt gear friction factor ordinary surveying device has the gear adaptive with tooth bar (5), and Pulley shaft to be measured passes guide groove and is fixedly connected with gear; Said belt gear coefficient of friction ordinary surveying device has idle pulley one (6), belt pulley to be measured (7); Said belt pulley to be measured is provided with spanner jack (71); Said idle pulley one articulates with idler shaft one; Said belt pulley to be measured and Pulley shaft to be measured articulate; Said support plate is provided with mark line one (8); The position of mark line one is between idler shaft one and guide groove; Said mark line is held with idle pulley one upper semicircumference tangent one by one, and the other end is lower than when Pulley shaft to be measured is in the guide groove upper end position, the low spot of belt pulley circumference to be measured; Said belt gear friction factor ordinary surveying device has tautness meter (9) above belt pulley to be measured; Said belt gear friction factor ordinary surveying device has standard weight block (10), belt to be measured (12); Said belt to be measured upper end is connected with tautness meter; Said belt to be measured is tangent to extending below with the belt pulley to be measured outside along vertical; Through second circumference of belt pulley to be measured be tilted to and idle pulley one upper semicircumference tangent, and be connected from idle pulley one outside along vertical to extending below with the standard weight block; The weight of said standard weight block is equal to or greater than 10kg.
2. belt gear friction factor ordinary surveying device according to claim 1, it is characterized in that: said idler shaft one is fixedly connected with support plate above a side of guide groove; Said belt gear friction factor ordinary surveying device also comprises idler shaft two (13), idle pulley two (14), and said idler shaft two is fixedly connected with support plate below the guide groove of idler shaft one homonymy; The horizontal range of said idler shaft two and guide groove is less than the horizontal range of idler shaft one with guide groove; Said idle pulley two articulates with idler shaft two; Said support plate is provided with mark line two (15); The position of mark line two is between idler shaft two and guide groove; Said mark line 21 ends and idle pulley two upper semicircumferences are tangent, when the other end is lower than Pulley shaft to be measured and is in the guide groove upper end position, and the low spot of belt pulley circumference to be measured.
3. belt gear friction factor ordinary surveying device according to claim 2 is characterized in that: said mark line one is 41.93 degree with the angle of horizontal direction; Said mark line two is 32.7 degree with the angle of horizontal direction.
4. belt gear friction factor ordinary surveying device according to claim 1 is characterized in that: said mark line one is the straight line that continuous score lines or spacer holes extend into.
5. according to claim 2 or 3 described belt gear friction factor ordinary surveying devices, it is characterized in that: said mark line one, mark line two are the straight line that continuous score lines or spacer holes extend into.
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| CN2010102880012A CN102116733B (en) | 2010-09-21 | 2010-09-21 | Simple measurement device for driving friction coefficient of belt |
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| CN2010102880012A CN102116733B (en) | 2010-09-21 | 2010-09-21 | Simple measurement device for driving friction coefficient of belt |
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| CN108333104B (en) * | 2018-01-30 | 2020-03-10 | 太原理工大学 | Testing device and method for testing surface friction force of flexible material |
| CN108572137B (en) * | 2018-06-22 | 2021-01-26 | 山东大学 | Simple fiber friction and wear performance testing equipment and method |
| CN111896469A (en) * | 2019-05-05 | 2020-11-06 | 中山辰元纺织科技有限公司 | Yarn friction coefficient tester |
| CN115015103B (en) * | 2022-05-24 | 2023-01-03 | 武汉中誉鼎力智能科技有限公司 | Real-time detection method and device for friction factor and microscopic morphology of material surface |
Citations (1)
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| CN1500208A (en) * | 2001-04-04 | 2004-05-26 | Device and method for determining friction coefficient |
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| JP2005273840A (en) * | 2004-03-26 | 2005-10-06 | Denso Corp | Designing method for belt transmission system |
| JP2008032545A (en) * | 2006-07-28 | 2008-02-14 | Bando Chem Ind Ltd | Friction coefficient measuring method and measuring device of friction transmission belt |
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| CN1500208A (en) * | 2001-04-04 | 2004-05-26 | Device and method for determining friction coefficient |
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| JP特开2008-32545A 2008.02.14 |
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Effective date of registration: 20201016 Address after: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China Patentee after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: 317000 east gate of Taizhou, Zhejiang Patentee before: ZHEJIANG GEELY AUTOMOBILE RESEARCH INSTITUTE Co.,Ltd. Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Effective date of registration: 20201016 Address after: Huaian City, 223400 West Road on the north side of Jiangsu Economic Development Zone of Lianshui Province Patentee after: JIANGSU TIANHONG NEW ENERGY TECHNOLOGY Co.,Ltd. Address before: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China Patentee before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. |
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