CN205333234U - Single bearing roller resistance coefficient testboard - Google Patents
Single bearing roller resistance coefficient testboard Download PDFInfo
- Publication number
- CN205333234U CN205333234U CN201620001286.XU CN201620001286U CN205333234U CN 205333234 U CN205333234 U CN 205333234U CN 201620001286 U CN201620001286 U CN 201620001286U CN 205333234 U CN205333234 U CN 205333234U
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- China
- Prior art keywords
- roller
- bearing roller
- carrying roller
- swing span
- single mount
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Abstract
The utility model provides a single bearing roller resistance coefficient testboard, it is made steady rotation by the survey bearing roller to make through bearing roller drive arrangement, measure the initial rotational speed n who is surveyed the bearing roller through handheld speedometer after treating the speed stabilization, then cut off and surveyed the contact of bearing roller with drive arrangement, the bearing roller is rotated until stopping by the low -down even speed reduction of frictional resistance square effect only, it rotated until stopping required time T1 by the low -down even speed reduction of frictional resistance square effect by the survey bearing roller to measure through the timing stopwatch, then measure again behind the in addition additional ring on being surveyed the bearing roller and rotated until stopping used time T2 by the low -down even speed reduction of frictional resistance square effect by the survey bearing roller, just can be based on the formula of deriving and calculate out single bearing roller resistance coefficient.
Description
Technical field
The present invention relates to the test device of a kind of conveying machinery parts, in particular relate to the test device of the resistance coefficient of a kind of belt conveyor up cradle roll, it is the special purpose device that a kind of resistance coefficient when single carrying roller is rotated is tested。
Background technology
Carrying roller uses in a large number on rubber conveyer。Idler resistance coefficient is a critically important parameter, and the operational effect of ribbon conveyer, service life, power consumption all can be produced direct impact by its size。Idler resistance coefficient little then carrying roller operational flexibility is good, operate steadily easily, long service life, power consumption little。Otherwise, then to run dumb, power consumption is big。Therefore, manufacturer, when development and design, production carrying roller, in order to understand development effect or in order to control produced carrying roller product quality, all needs regularly to test its single mount roller resistance coefficient value。Past the most original detection method is: rotates with hands after being erected by carrying roller, determines the size of carrying roller rotary resistance with feel, thus assessing its rotary resistance coefficient magnitude of calculation。This method is obviously relatively backward and poor accuracy。More existing method of testings can test idler machining resistance coefficients, though but idler machining resistance coefficients and single mount roller resistance coefficient have and necessarily contact but the two numerical value differing。Idler machining resistance coefficients embodies the running status of groups of carrying roller, and it and the environment run and force-bearing situation have very big relation, and single mount roller resistance coefficient embodies degree of flexibility when certain certain certain class carrying roller runs。But some are incomplete and not enough for the existing test to single mount roller resistance coefficient, detection existence, it is necessary to this is improved。
Finding there is the bibliographical information that some are relevant by the domestic Searches of Patent Literature, mainly have relevant with the present invention is following:
1, the patent No. is CN201520492248.4, and name is called the practicality new patent of " the test device of a kind of single mount roller resistance coefficient ", and this utility model discloses a kind of test device for testing single mount roller resistance coefficient。A kind of detecting device that single mount roller resistance coefficient on rubber conveyer is tested, including a L-shaped swing span around a spot wobble, single mount roller is placed on roller rack, and roller rack bolt is packed in swing span top；Carrying roller driving device drives single mount roller uniform rotation；Arranging that in the upper right side of swing span fulcrum one touches ferrum, touching the side on the right of ferrum has a limit switch, when the perpendicular erectility of swing span, touches ferrum and contacts gently with the roller of limit switch；In the lower section of swing span fulcrum, it is provided with 2 limited blocks；The bottom right end of swing span L shape is connected by bearing pin and electric magnet；Method of testing is: measured the initial speed n of tested carrying roller by the survey rotational speed devices being made up of reflex reflector lens and photoelectric sensor, by by touch ferrum and limit switch and timer is constituted survey time device measure tested carrying roller is not added with annulus and plus under annulus two states from initial velocity n to the time used that stops operating, so that it may calculate single mount roller resistance coefficient according to the formula derived。
2, the patent No. is CN86206184, and name is called the utility model patent of " test set-up for running drag coefficient of supporting roll set of ribbon conveyer ", and this utility model discloses a kind of assay device running dynamic resistance coefficient for testing carrier roller of belt conveyer group。It is to support an idler machining with four air cushion dish, and both sides set air cushion dish and overcome adhesive tape transverse direction sideslip power。After the ventilation of air cushion dish forms air cushion, whole idler machining is floating freely。When adhesive tape runs。Carrying roller is rubbed rotation, and idler machining moves forward the sensor contacted above therewith and records running resistance, and the vertical load of correspondence measured by four sensors below air cushion dish simultaneously, and the ratio of two measured values is resistance coefficients。This device additional drag is little, absorbing, and certainty of measurement is high, and to testing, similar continuous conveyor is equally applicable。
The patent No. is CN86206224, and name is called the utility model of " rotation resistance testing equipment for supporting roller in belt conveyer ", and this utility model discloses a kind of assay device for testing carrier roller of belt conveyer rotational resistance。Adopting two full floating air bearing, one group frame of supporting, it blocks carrying roller axle, after bearing ventilation forms air cushion, and the free levitating of whole framework, obtain freely finely tuning of three-D displacement and rotary freedom, pressure ratio energy autobalance additional drag between air cushion。When carrying roller bear footpath load rubbed rotation time, it drives whole framework to rotate without restrictions and contact sensor, records roller revolving resistance。This device additional drag is minimum, absorbing, and measuring accuracy is high, and the rotational resistance of test roller, cylinder class is equally applicable.。
Although these patents above-mentioned have related to the test of the carrying roller of rubber conveyer, but some detecting devices are not the single mount roller resistance coefficients for rubber conveyer to carry out testing or monitoring, name is called the utility model of " test set-up for running drag coefficient of supporting roll set of ribbon conveyer ", its test is idler machining resistance coefficients, and the resistance coefficient of single mount roller and the resistance coefficients of idler machining differ；Name is called the utility model of " rotation resistance testing equipment for supporting roller in belt conveyer ", and this utility model is for testing carrier roller of belt conveyer rotational resistance, rather than is used for test resistance coefficient, and structure is more complicated；Name is called the practicality new patent of " the test device of a kind of single mount roller resistance coefficient ", and this utility model is a kind of test device for testing single mount roller resistance coefficient, but test device is complex。Therefore it is still necessary to the test device of existing single mount roller resistance coefficient is in addition perfect。
Summary of the invention
Present invention aims to the some shortcomings that existing single mount roller resistance coefficient context of detection exists, the problem that the method for testing of a kind of novel single mount roller resistance coefficient and device, the method and device can effectively solve test single mount roller resistance coefficient size is provided。
Therefore, to achieve these goals, the technical solution used in the present invention is: a kind of single mount roller resistance coefficient testboard, and a L-shaped swing span swings around fulcrum A, and single mount roller is placed on roller rack, and roller rack bolt is packed in swing span top；Carrying roller driving device drives single mount roller uniform rotation, and its rotation direction is to make carrying roller force in radial downward, in order to avoid support deviate from by carrying roller；The bottom right end of swing span L shape is connected by bearing pin and electric magnet；It is characterized in that, in the lower section of fulcrum A, on the left side of L-shaped swing span, between fulcrum A and 90 ° of corners of L-shaped swing span, 1/2 place arranges a limited block, in case the swing span top amplitude of oscillation to the right is excessive；On the external diameter in tested carrying roller centre position, it is inserted in annulus during second test and fixes its position；And it is equipped with a handheld tachoscope and a Chronograph。
Further, described carrying roller driving device is to drive a pair belt pulley reducing gear by an alternating current generator, namely small pulley passes through the big belt wheel of belt transmission, drives tested single mount roller by a pair friction pulley on large belt wheel, and large belt wheel is supported by two bearing blocks。
Beneficial effects of the present invention: the present invention makes tested carrying roller do uniform rotation by carrying roller driving device, measured the initial speed n of tested carrying roller by handheld tachoscope after stabilization of speed, be then cut off tested carrying roller with the contacting of driving device, carrying roller makes even underdrive until stopping under being limited only by frictional resistance moment effect, measures tested carrying roller by Chronograph and makes even underdrive under being limited only by frictional resistance moment effect until stopping required time T1, then on tested carrying roller, measure tested carrying roller plus annulus and under being limited only by frictional resistance moment effect, make even underdrive until stopping time T used2, so that it may calculate single mount roller resistance coefficient according to the formula derived。
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is that the B of Fig. 1 is to direction view；
Fig. 4 is the C place enlarged drawing of Fig. 3。
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention will be further described。
Can be seen that the present invention is a kind of single mount roller resistance coefficient testboard by accompanying drawing, a L-shaped swing span swings around fulcrum A, and single mount roller is placed on roller rack, and roller rack bolt is packed in swing span top；Carrying roller driving device drives single mount roller uniform rotation, and its rotation direction is to make carrying roller force in radial downward, in order to avoid support deviate from by carrying roller；The bottom right end of swing span L shape is connected by bearing pin and electric magnet；It is characterized in that, in the lower section of fulcrum A, on the left side of L-shaped swing span, between fulcrum A and 90 ° of corners of L-shaped swing span, 1/2 place arranges a limited block, in case the swing span top amplitude of oscillation to the right is excessive；On the external diameter in tested carrying roller centre position, it is inserted in annulus during second test and fixes its position；And it is equipped with a handheld tachoscope and a Chronograph。
Further, described carrying roller driving device is to drive a pair belt pulley reducing gear by an alternating current generator, namely small pulley passes through the big belt wheel of belt transmission, and a pair friction pulley then passed through on large belt wheel drives tested single mount roller, and large belt wheel is supported by two bearing blocks。
Concrete test mode is as follows:
A kind of single mount roller resistance coefficient testboard, a L-shaped swing span 8 swings around fulcrum A, and single mount roller 6 is placed on roller rack 7, and carrying roller props up 7 tops being packed in swing span 8 with bolt；Carrying roller driving device drives single mount roller 6 to do uniform rotation, and its rotation direction is to make carrying roller 6 force in radial downward, in order to avoid support 7 deviate from by carrying roller 6；The bottom right end of swing span L shape is connected by bearing pin 10 and electric magnet 9；It is characterized in that, in the lower section of fulcrum A, the left side of L-shaped swing span 8, between fulcrum A and 90 ° of corners of L-shaped swing span 8,1/2 place arranges a limited block 11, in case the swing span 8 top amplitude of oscillation to the right is excessive；On the external diameter in tested carrying roller centre position, it is inserted in annulus 16 during second test and fixes its position；And it is equipped with a handheld tachoscope 14 and a Chronograph 15。
Carrying roller driving device is to drive a pair belt pulley reducing gear by an alternating current generator 1, namely small pulley 2 is by the big belt wheel 4 of belt 3 transmission, then passing through a pair friction pulley 5 on large belt wheel 12 and drive tested single mount roller 6, large belt wheel 12 is supported by two bearing blocks 13。
A kind of method of testing of single mount roller resistance coefficient testboard, including following step:
1), before test, L-shaped swing span 8 is loaded onto single mount roller 6 to be measured；
2) while making motor 1 energising, electric magnet 9 is also energized, and electric magnet 9 holds the lower right-hand member of L-shaped swing span 8 by bearing pin 10, and swing span 8 rotates counterclockwise a little around fulcrum A, then tested carrying roller 6 rotates against a pair friction pulley 5 and under it drives；
3) conehead of handheld tachoscope 14 withstanding the axle head cone nest of motor 1, tachoscope 14 will show motor speed, then be converted into the rotating speed of carrying roller 6, this is the initial speed n of tested carrying roller 6；
4) motor 1 power-off is made, electric magnet 10 also simultaneously dead electricity, the lower right-hand member of swing span 8 loses the suction of electric magnet 10, swing span 8 makes clockwise oscillation due to the effect of laying particular stress on bottom L-shaped around fulcrum A, namely tested carrying roller 6 and a pair friction pulley 5 depart from, now, tested carrying roller 6 is limited only by moment of resistance work as uniformly retarded motion；While electric magnet 10 dead electricity, press Chronograph 15, measure, record tested carrying roller 6 from disengaging friction pulley 5 to the time T used that stops operating1；
5) plus annulus 16, repeat the above steps on tested carrying roller 6, Chronograph 15 is used to measure the tested carrying roller 6 after plus annulus 16 from disengaging friction pulley 5 to the time T used that stops operating2；
6) use the formula (1) derived, just can calculate the resistance coefficient δ of this carrying roller:
δ=J0ω/[G·r(KT2T1)](1)
In formula (1): J0The rotary inertia of annulus 16, kg m2；
The tested single mount roller 6 of ω rotates initial angular velocity, rad/s；Because motor drives carrying roller to be hardware features, so, do not add tested single mount roller initial angle of revolution speed omega during annulus 161The initial angle of revolution speed omega of tested single mount roller with during plus annulus 162Equal, i.e. ω1=ω2=ω, ω=2 π n/i60 (n is the carrying roller initial speed r/mn, the i that are obtained by handheld tachoscope actual measurement motor speed conversion is gear ratio)；
T1Do not add during annulus 16 carrying roller 6 from initial angular velocity to the required time that stops operating, s；
T2Plus carrying roller 6 after annulus 16 from initial angular velocity to the required time that stops operating, s；
R single mount roller radius, m；
K=(G+G0)/G, G single mount roller weight, N；G0The weight of the annulus 16 on-single mount roller 6, N；J0、G、G0, r, K value be all know value original the sixth of the twelve Earthly Branches, obtain T1、T2With ω (n), substitute into formula (1), single mount roller resistance coefficient δ can be obtained。
Beneficial effects of the present invention: the present invention makes tested carrying roller do uniform rotation by carrying roller driving device, measured the initial speed n of tested carrying roller by handheld tachoscope after stabilization of speed, be then cut off tested carrying roller with the contacting of driving device, carrying roller makes even underdrive until stopping under being limited only by frictional resistance moment effect, measures tested carrying roller by Chronograph and makes even underdrive under being limited only by frictional resistance moment effect until stopping required time T1, then on tested carrying roller, measure tested carrying roller plus annulus and under being limited only by frictional resistance moment effect, make even underdrive until stopping time T used2, so that it may calculate single mount roller resistance coefficient according to the formula derived。
It will be apparent that above-described embodiment is simply to illustrate that example cited by the present invention, the simple change of any those ordinary skill in the art and replace be all the present invention protection within。
Claims (1)
1. a single mount roller resistance coefficient testboard, a L-shaped swing span (8) swings around fulcrum A, and single mount roller (6) is placed on roller rack (7), and carrying roller props up 7 tops being packed in swing span (8) with bolt；Carrying roller driving device drives single mount roller (6) to do uniform rotation, and its rotation direction is to make carrying roller (6) force in radial downward, in order to avoid support (7) deviate from by carrying roller (6)；The bottom right end of swing span L shape is connected by bearing pin (10) and electric magnet (9)；It is characterized in that, lower section at fulcrum (A), the left side of L-shaped swing span (8), between fulcrum (A) and 90 ° of corners of L-shaped swing span (8), 1/2 place arranges a limited block (11), in case swing span (8) the top amplitude of oscillation to the right is excessive；On the external diameter in tested carrying roller centre position, it is inserted in annulus (16) during second test and fixes its position；Configure a handheld tachoscope (14) and a Chronograph (15)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620001286.XU CN205333234U (en) | 2016-01-04 | 2016-01-04 | Single bearing roller resistance coefficient testboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620001286.XU CN205333234U (en) | 2016-01-04 | 2016-01-04 | Single bearing roller resistance coefficient testboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205333234U true CN205333234U (en) | 2016-06-22 |
Family
ID=56209130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620001286.XU Expired - Fee Related CN205333234U (en) | 2016-01-04 | 2016-01-04 | Single bearing roller resistance coefficient testboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205333234U (en) |
-
2016
- 2016-01-04 CN CN201620001286.XU patent/CN205333234U/en not_active Expired - Fee Related
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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: 20160622 Termination date: 20170104 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |