CN105157897A - Conveyer belt energy saving performance and impression roller rolling resistance testing devices and methods - Google Patents
Conveyer belt energy saving performance and impression roller rolling resistance testing devices and methods Download PDFInfo
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- CN105157897A CN105157897A CN201510490853.2A CN201510490853A CN105157897A CN 105157897 A CN105157897 A CN 105157897A CN 201510490853 A CN201510490853 A CN 201510490853A CN 105157897 A CN105157897 A CN 105157897A
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- backer roll
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- impression roller
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Abstract
The invention relates to an impression roller rolling resistance testing device, including a support rack arranged on a to-be-tested conveyer belt, and an impression roller mounted on the support rack. The impression roller comprises a stationary impression roller shaft and an impression roller shell which can freely roll through the impression roller shaft. At least one of two sides of the impression roller shaft is provided with a static torque transducer. The impression roller rolling resistance testing device adopts a carrying roller rolling resistance testing method different from the prior art; the impression roller shaft is stationary, and two ends of the impression roller shaft are supported by two static torque transducers; and torque generated by rotation of the impression roller shell under the experiment driving of a conveyer belt is measured, and the measured torque value is divided by the radius of the impression roller to obtain a peripheral force, namely the rolling resistance of the impression roller.
Description
Technical field
The present invention relates to a kind of for measuring the proving installation carrying sunken resistance with pressure, especially a kind of proving installation that can record backer roll resistance to rolling.
Background technology
Along with the development of long distance delivery, the running resistance of conveying belt has caused the most attention of people.Show when horizontal feed after deliberation, conveying belt, by the pressure due to material during carrying roller, makes lower rubber cover and carrying roller contact portion produce and presses the sunken energy loss caused to account for about 60% of whole induction system energy loss.Therefore the pressure of conveying belt is fallen into resistance always and studies as important problem by coal, mining industry, conveying belt industry and many universities and colleges and scientific research institution.For reducing transporting resistance, many manufacturers have developed various types of energy-conservation conveying belt.
Generally believing that pressure falls into resistance is at present because the viscoelasticity of conveyor belt covering material causes, research method is in theory first set up the mechanical model of conveying belt and carrier roller system mostly, under certain assumed condition, analyze by the theory of Viscous Elastic Mechanics and Elasticity, derive the computing formula that pressure falls into resistance and the sunken resistance coefficient of pressure.But the checking that the result of theoretical analysis must be measured through overtesting, also needs the method falling into the size of resistance by measuring pressure to evaluate the energy saving of energy-conservation conveying belt finished product on the other hand in actual production.
Be specifically designed to the test unit measuring conveying sunken resistance with pressure at present also little, only have in the research report of other university and have simple introduction.。
Scheme 1 adopts cycloconveyor belt finished product to test, and first band integrated overturn before test, makes lower caldding layer toward the outside, then installs on test unit; With certain tension-stretched, starting characteristics test machine makes band run according to certain speed; Overwhelm on conveying belt with certain pressure by backer roll, backer roll support is connected with tension-compression sensor, and the horizontal force that therefore conveying belt is applied on backer roll just can by sensor measurement out.
The principle of scheme 2 is substantially identical, and just two backer rolls are housed on pressure frame, whole pressure frame is connected with tension-compression sensor, and when conveying belt runs, the horizontal force be applied on pressure roll just can be applied on sensor by pressure frame.The advantage of scheme 2 is that the distance of two backer rolls is adjustable, can be used for studying the relation that carrying roller distance and pressure fall into resistance.
Backer roll force analysis:
Analyze the force-bearing situation of backer roll, conveying belt is moved to the left with speed V, backer roll is driven to rotate along arrow to n direction, the horizontal force that conveying belt is applied to backer roll comprises the force of periphery Fn pressing the rolling resistance moment Mn falling into resistance F and need to overcome pressure roller, so the horizontal force Fx that tension-compression sensor is measured is actually making a concerted effort namely of these two power:
Fx＝F+Fn(1)
Can find out, the resistance to rolling of backer roll is larger, and the pulling force produced when conveying belt is moved to the left is larger.
Due to Fn=2Mn/D
In formula: D-backer roll diameter
So pressure falls into resistance F=Fx-2Mn/D (2)
Situation when conveying belt runs to the right is identical therewith, and what just sensor was subject to is not pulling force but pressure.
As can be seen from formula (2), after measuring horizontal force according to above-mentioned two schemes sensor, also should deduct the pressure that the force of periphery produced due to the resistance to rolling of backer roll itself just can obtain conveying belt and fall into resistance.
Existing carrying roller resistance to rolling method of testing:
Current measurement belt idler resistance to rolling has many methods, comprising the support wheel method that MT821-2006 " belt conveyor roller for coal mines technical conditions " specifies; And inertia method and cutting edge load method etc.But these methods can not simulate the situation of the stressed of carrying roller and actual motion completely, and required test unit complex structure, only can test carrying roller separately in testing laboratory, cycloconveyor belt test unit is difficult to adopt.Therefore, aforesaid two schemes does not get rid of the impact of the resistance to rolling of backer roll own, and the force value in fact measured is all making a concerted effort of these two power of the force of periphery of pressing the resistance to rolling of sunken resistance and backer roll itself and producing.
Conveying belt sample loads and unloads:
Tensile force needed for conveying belt test is larger, and the tensile force especially during steel cord conveyor belt test wants tens tons of tons even up to a hundred, so head roll and belt tensioning drum can not adopt the structure of cantilever.Current domestic existing conveying belt testing machine mostly adopts following methods when installing conveying belt test: 1. the side support installing of whole testing machine can move axially along cylinder on linear slide rail, the carrying roller first will dismantled on testing machine during dress band, pressure rolls and all auxiliary equipments, the middle part oil cylinder of driving and driven cylinder is held, again moveable support oil cylinder is pulled out enough distances, cycloconveyor belt could be enclosed within master and slave cylinder.Then frame is pushed back original position by oil cylinder, installs carrying roller, pressure roll and auxiliary equipment and can start test.2. vulcanization plant is set on testing machine, after a conveying belt is connected into ring specimen on testing machine, starts test again.
The shortcoming of prior art:
1. the resistance to rolling of backer roll itself do not got rid of by the existing test unit measuring conveying sunken resistance with pressure, and the force of periphery that the horizontal force measured is actually resistance to rolling own and produces and pressure fall into making a concerted effort of these two power of resistance, and the error of measurement is larger.
2. the method for existing measurement belt idler resistance mostly can not simulate the load state of carrying roller actual motion and required proving installation complex structure completely, cannot be applied on the test unit of test cycloconveyor belt sample.
3. the method for existing installation endless belt sample needs to remove parts a large amount of on test unit, handling sample is more time-consuming, also need to pull open by a whole set of hydraulic system, recover frame, make the complicated structure of device, and the frame mobile precision that also can lower whole device repeatedly, be difficult to apply.
4. by the method for sample vulcanized joint on test unit, conveying belt especially steel cord conveyor belt has strict joint technique, require higher to technician, owing to not being operate in the factory of specialty, technology and equipment all cannot ensure, intensity, the flatness of sample joint all can be greatly affected, sample fluctuation of service when making test, sometimes the sample connected even there will be the phenomenon of the length inconsistent (in bell mouth shape) of the left and right sides, cause sample " sideslip " in process of the test, then cannot test time serious.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of proving installation can measuring the resistance to rolling of backer roll, and the resistance getting rid of backer roll itself, on the impact of conveying sunken resistance with pressure, accurately records pressure and falls into resistance.
For solving the problems of the technologies described above, backer roll resistance to rolling proving installation of the present invention, comprises bracing frame and is arranged on the backer roll on bracing frame, the both sides at least side mounting torque sensor of described backer roll.
Preferably, described backer roll comprises actionless pressurization roll shaft and by pressurization roll shaft free rolling backer roll shell, described torque sensor is static torque sensor.
During test, backer roll is placed on conveying belt to be measured with certain pressure, backer roll shell rolls under the drive of conveying belt, the rolling resistance moment produced can be delivered on pressurization roll shaft, this rolling resistance moment records by the installation static torque sensor that the one or both sides on pressurization roll shaft are arranged, and passes to control system.
Preferably, described backer roll shell is connected by bearing with pressurization roll shaft.
As further improvement, support frame as described above connects jacking gear.During test, by promoting or reducing jacking gear, backer roll can be promoted or press down.
Preferably, described jacking gear is cylinder.
As further improvement, Bonding pressure sensor on described jacking gear.Pressure transducer can measure backer roll to travelling belt applied pressure.
The invention still further relates to a kind of conveying belt energy saving proving installation, comprise bracing frame and be arranged on the backer roll on bracing frame, described backer roll comprises actionless pressurization roll shaft and by pressurization roll shaft free rolling backer roll shell, static torque sensor is at least installed in side in the both sides of described pressurization roll shaft, and support frame as described above connects tension-compression sensor.
Support frame as described above connects tension-compression sensor by the cylinder that can be free to slide on stationary shaft, and support frame as described above is fixedly connected with the side of cylinder, and one end of cylinder is fixedly connected with tension-compression sensor.
Described cylinder inner wall arranges ball.
The invention still further relates to a kind of conveying belt energy saving method of testing, measure the horizontal force suffered by backer roll, measure the force of periphery of the rolling resistance moment Mn needing to overcome pressure roller, the force of periphery that the horizontal force suffered by backer roll deducts the rolling resistance moment Mn needing to overcome pressure roller is the sunken resistance of pressure.
Preferably, the described force of periphery of the rolling resistance moment Mn overcoming pressure roller that needs is by arranging static torque sensor to record at the two ends of backer roll.
Backer roll resistance to rolling proving installation of the present invention have employed carrying roller resistance to rolling method of testing unlike previous technologies, pressurizeing, roll shaft is static not to rotate, its two ends are propped up and supports respectively on two static torque sensors, measure backer roll shell and drive backspin then the moment of torsion produced in conveying belt test, the torque value measured just is drawn the force of periphery, i.e. the resistance to rolling of backer roll itself divided by the radius of backer roll.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the left view of backer roll proving installation of the present invention.
Fig. 2 is the structural representation that backer roll and two ends support.
Fig. 3 is the front view of backer roll resistance to rolling proving installation of the present invention.
Fig. 4 is the partial enlarged drawing of part A in Fig. 1.
Embodiment
As depicted in figs. 1 and 2, backer roll resistance to rolling proving installation of the present invention, comprise the bracing frame 2 be arranged on above conveying belt 1 to be measured, be arranged on the backer roll 3 on bracing frame 2, position relative with backer roll below conveying belt is arranged carrying roller 19, backer roll 3 comprises actionless pressurization roll shaft 4 and by pressurization roll shaft 4 free rolling backer roll shell 5, static torque sensor 6 is installed in the both sides of pressurization roll shaft 4.
The pressurization roll shaft 4 of backer roll 3 also can be fixed together with backer roll shell 5 and rotate, and dynamic torque sensor is installed at the two ends of the roller bearing 4 that pressurizes like this.
During test, backer roll 3 is placed on conveying belt 1 to be measured with certain pressure, backer roll shell 5 rolls under the drive of conveying belt 1, the rolling resistance moment produced can be delivered on pressurization roll shaft 4, this rolling resistance moment records by the static torque sensor 6 that the both sides on pressurization roll shaft 4 are arranged, pass to control system, backer roll shell 5 is connected by bearing 7 with pressurization roll shaft 4.
Axle sleeve 9 is installed in bearing 7 outer end, and axle sleeve 9 outer end connects static torque sensor 6 by flange 10, and static torque sensor 6 is arranged on coupling shaft 11 by flange 10, and coupling shaft 11 is arranged on bracing frame 2, mounting and adjusting gland 13 on coupling shaft 11.
Bracing frame 2 is arranged on framework 21 by being fixed on the cylinder 16 that stationary shaft 15 is free to slide, and framework 21 connects cylinder 8, is driven by cylinder 8.During test, by promoting or reducing cylinder, backer roll 3 can be promoted or presses down.Bonding pressure sensor 20 on cylinder 8.Pressure transducer 20 can measure backer roll 3 to conveying belt 1 applied pressure.
The invention still further relates to a kind of conveying belt energy saving proving installation, as shown in Figure 3 and Figure 4, comprise the bracing frame 2 be arranged on above conveying belt 1 to be measured, be arranged on the backer roll 3 on bracing frame 2, backer roll 3 comprises actionless pressurization roll shaft 4 and by pressurization roll shaft 4 free rolling backer roll shell 5, static torque sensor 6 is installed in the both sides of pressurization roll shaft 4, the both sides of bracing frame 2 are fixedly connected with tension-compression sensor 14, bracing frame 2 connects tension-compression sensor 14 by the cylinder 16 that can be free to slide on stationary shaft 15, bracing frame 2 is fixedly connected with the side of cylinder 16, one end of cylinder 16 is fixedly connected with tension-compression sensor 14, cylinder 16 inwall arranges ball 17, tension-compression sensor 14 and stationary shaft 15 are connected on framework 18.
The invention still further relates to a kind of conveying belt energy saving method of testing, measure the horizontal force suffered by backer roll, measure the force of periphery of the rolling resistance moment Mn needing to overcome pressure roller, the force of periphery that the horizontal force suffered by backer roll deducts the rolling resistance moment Mn needing to overcome pressure roller is the sunken resistance of pressure.Need the force of periphery of the rolling resistance moment Mn overcoming pressure roller by arranging static torque sensor to record at the two ends of backer roll.
The above is only to preferred embodiment of the present invention, not does other forms of restriction to the present invention, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the Equivalent embodiments of equal change.Everyly do not depart from the present invention program's content, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and remodeling, all drop in protection scope of the present invention.
Claims (10)
1. a backer roll resistance to rolling proving installation, comprises bracing frame and is arranged on the backer roll on bracing frame, it is characterized in that: the both sides at least side mounting torque sensor of described backer roll.
2. according to backer roll resistance to rolling proving installation according to claim 1, it is characterized in that: described backer roll comprises actionless pressurization roll shaft and by pressurization roll shaft free rolling backer roll shell, described torque sensor is static torque sensor.
3. according to backer roll resistance to rolling proving installation according to claim 2, it is characterized in that: described backer roll shell is connected by bearing with pressurization roll shaft.
4., according to backer roll resistance to rolling proving installation according to claim 3, it is characterized in that: support frame as described above connects jacking gear.
5. according to backer roll resistance to rolling proving installation according to claim 4, it is characterized in that: Bonding pressure sensor on described jacking gear.
6. kind of conveying belt energy saving proving installation, comprise bracing frame and be arranged on the backer roll on bracing frame, it is characterized in that: described backer roll comprises actionless pressurization roll shaft and by pressurization roll shaft free rolling backer roll shell, static torque sensor is at least installed in side in the both sides of described pressurization roll shaft, and support frame as described above connects tension-compression sensor.
7. according to conveying belt energy saving proving installation according to claim 6, it is characterized in that: support frame as described above connects tension-compression sensor by the cylinder that can be free to slide on stationary shaft, support frame as described above is fixedly connected with the side of cylinder, and one end of cylinder is fixedly connected with tension-compression sensor.
8., according to conveying belt energy saving proving installation according to claim 7, it is characterized in that: described cylinder inner wall arranges ball.
9. a conveying belt energy saving method of testing, it is characterized in that: measure the horizontal force suffered by backer roll, measure the force of periphery of the rolling resistance moment Mn needing to overcome pressure roller, the force of periphery that the horizontal force suffered by backer roll deducts the rolling resistance moment Mn needing to overcome pressure roller is the sunken resistance of pressure.
10. according to conveying belt energy saving proving installation according to claim 9, it is characterized in that: the described force of periphery needing to overcome the rolling resistance moment Mn of pressure roller is by arranging static torque sensor to record at the two ends of backer roll.
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| CN201510490853.2A CN105157897B (en) | 2015-08-12 | 2015-08-12 | Conveyer belt energy saving and backer roll rolling resistance test device and method |
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| CN201510490853.2A CN105157897B (en) | 2015-08-12 | 2015-08-12 | Conveyer belt energy saving and backer roll rolling resistance test device and method |
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Cited By (6)
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| CN105486442A (en) * | 2016-01-04 | 2016-04-13 | 湖南工业大学 | Groove type carrying roller set operation resistance coefficient testing device and testing method |
| CN105836572A (en) * | 2016-06-21 | 2016-08-10 | 南通迅达橡塑制造有限公司 | Monitoring type guiding device for elevator balance chain |
| CN107121280A (en) * | 2017-05-22 | 2017-09-01 | 青岛中化新材料实验室检测技术有限公司 | A kind of handling method of conveyer belt experimental rig and cycloconveyor belt sample |
| CN107255564A (en) * | 2017-07-26 | 2017-10-17 | 中国矿业大学 | A kind of rotation resistance testing equipment for supporting roller in belt conveyer and method of testing |
| CN107806951A (en) * | 2017-11-28 | 2018-03-16 | 力博重工科技股份有限公司 | Adjustable load roller revolving resistance detection means |
| CN110121640A (en) * | 2016-10-19 | 2019-08-13 | 美达私人有限公司 | Method and apparatus for testing rolling resistance |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486442A (en) * | 2016-01-04 | 2016-04-13 | 湖南工业大学 | Groove type carrying roller set operation resistance coefficient testing device and testing method |
| CN105836572A (en) * | 2016-06-21 | 2016-08-10 | 南通迅达橡塑制造有限公司 | Monitoring type guiding device for elevator balance chain |
| CN105836572B (en) * | 2016-06-21 | 2018-07-27 | 南通迅达橡塑制造有限公司 | The elevator balanced chain guider of monitor-type |
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| CN110121640B (en) * | 2016-10-19 | 2024-03-08 | 美达私人有限公司 | Method and device for testing rolling resistance |
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| CN107255564A (en) * | 2017-07-26 | 2017-10-17 | 中国矿业大学 | A kind of rotation resistance testing equipment for supporting roller in belt conveyer and method of testing |
| CN107806951A (en) * | 2017-11-28 | 2018-03-16 | 力博重工科技股份有限公司 | Adjustable load roller revolving resistance detection means |
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