CN104266750A - Measurement method for transverse vibration measurement system of axial movement rope - Google Patents
Measurement method for transverse vibration measurement system of axial movement rope Download PDFInfo
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- CN104266750A CN104266750A CN201410577429.7A CN201410577429A CN104266750A CN 104266750 A CN104266750 A CN 104266750A CN 201410577429 A CN201410577429 A CN 201410577429A CN 104266750 A CN104266750 A CN 104266750A
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Abstract
The invention discloses a measurement method for a transverse vibration measurement system of an axial movement rope. A middle cord of the system is arranged on a wheel train; a tensioning wheel, a left-end guide wheel, a right-end guide wheel and a reel are arranged on the wheel train along the moving of the cord from the end where an automatic take-up device is arranged in sequence; the two ends of the cord are respectively connected with the take-up device and the reel; the right-end guide wheel and a synchronous motor are fixedly arranged on a mobile platform of a first linear motor; the mobile platform of the first linear motor is supported on a first linear guiderail; the first linear guiderail is fixedly arranged on a rack platform in the movement direction of the cord; a second linear guiderail which is parallel to the first linear guiderail is fixedly arranged right above the cord; a second linear motor is supported on the second linear guiderail; a cross beam is fixedly arranged at the bottom of the second linear motor; displacement sensors are alternately arranged at the bottom of the cross beam. The system is used for the transverse vibration measurement of the axial movement rope, can be used for verifying the result of numerical calculation and can be used as a platform for professional courses teaching and scientific researches.
Description
The application is the applying date is on January 25th, 2013, and application number is 2013100298374, and denomination of invention is the divisional application moving axially rope transverse vibration measuring system and application thereof.
Technical field
The present invention relates to a kind of for measuring the measuring method moving axially rope proving installation of transverse vibration under given translational speed and tension force.More specifically relate to a kind of under given initial displacement, move axially rope transversal displacement vibration non-contact measurement test experiments platform and pilot system.
Background technology
Axially the rope system of moving is a type of axially moving materials, engineering has many application, as cable car cableway, tethered satellite, rope yarn, dynamic conveyor belt, tape, paper tape etc.Axially rope moves system mechanical simplified model and is roughly divided into two classes by the long Changing Pattern of rope.One class moves system for the fixed length rope shown in Fig. 2 a, and survey region length is constant, and rope has translational speed, has rope that is newly-increased and that disappear at survey region two ends.Application example has travelling belt, cable car cableway and powerdriven belt etc.Another kind of is the survey region length variations shown in Fig. 2 b and Fig. 2 c, at one end has rope that is newly-increased or that disappear, comprises the rope that the rope extended shown in Fig. 2 b moves the shortening shown in system and Fig. 2 c and moves system.Application example has the cable wire of elevator, and the rise and fall of lift heavy thing lifted by crane, the primary release of Tethered Systems or the rope system etc. when reclaiming component.In Fig. 2 a, Fig. 2 b and Fig. 2 c, study the vibratory response of this type systematic and vibration characteristics and the vibration of engineering system and stability are controlled to have important using value.
Because the movement of rope system, in equation, occur time dependent coefficient entry, define parametric excitation, the vibration of the type is parametric vibration, can not obtain its Theory Solution by the method for traditional linear system.Current researcher has proposed multiple numerical computation method to solve the vibration problem of mobile rope, still needs a kind of experimental provision to carry out check algorithm.Three kinds of systems of this experimental provision demand fulfillment energy simulation drawing 2, namely measured length rope moves system and elongated degree rope moves system; Can given rope move speed, direction and rope tension force, the material parameter of rope can be changed, as density, elastic modulus etc.; Can give rope system specific excitation, as initial displacement excitation, pulse excitation etc.; The transversal displacement of multiple specified point can be fastened by rope length direction stationary coordinate when the transversal displacement of multiple particle when mobile and rope move on tracking measurement rope.But the open report of experimental provision not relevant up to now, does not have a kind of result of calculation that the mobile rope vibration testing device of multiple operating mode and measuring table can be provided to be used for check number value-based algorithm yet.
Summary of the invention
The present invention is the weak point for avoiding existing for above-mentioned prior art, a kind of measuring method moving axially rope transverse vibration measuring system is provided, to obtaining the transversal displacement under various operating mode and correspondence thereof, for verifying the result of numerical computation method, thus be further used for the control of mobile rope vibration; Also may be used for the experiment porch as College Specialized Course Education and scientific research.
The present invention is that technical solution problem adopts following technical scheme:
The design feature that the present invention moves axially rope transverse vibration measuring system is:
Arrange train, cotton rope is arranged on described wheel and fastens, and described train at one end sets gradually as stretching pulley, left end guide wheel, right-hand member guide wheel and reel by the trend of cotton rope from spooler, and the two ends of cotton rope are connected on spooler and reel; Described spooler provides cotton rope to reclaim power with volute spring; Described reel is by synchronous machine drives; On described cotton rope, be on the long center of initial rope shift scale is set;
Described spooler and left end guide wheel are fixedly installed on framework platform, and described right-hand member guide wheel and synchronous motor are fixedly installed on the mobile platform of the first linear electric motors; Described stretching pulley is arranged on adjustable moving slide block, and described adjustable moving slide block is set with the weight beam of the tensioning dynamics for detecting stretching pulley;
The mobile platform of described first linear electric motors is bearing on the first line slideway, and can with the speed of setting and direction rectilinear movement on described first line slideway; Described first line slideway moves direction along rope and is fixedly installed on framework platform;
In the below of cotton rope, arrange coordinate axis along cotton rope moving direction, described coordinate axis is fixedly installed on on the base plate of described framework platform consolidation, and the starting point of described coordinate axis is the starting point of cotton rope at left end guide wheel;
Arranging sensor-based system is: being parallel to each other with the first line slideway directly over described cotton rope is fixedly installed the second line slideway, second linear electric motors are supported on described second line slideway, and can move on described second line slideway, be fixedly installed crossbeam in the bottom of described second linear electric motors, non-contact displacement transducer is disposed on the bottom of described crossbeam.
The application that the present invention moves axially rope transverse vibration measuring system is:
Second linear electric motors and synchronous motor keep motionless, first linear electric motors are with setting speed shift to right or left, the position of non-contact displacement transducer is fixed, to cotton rope initial excitation, non-contact displacement transducer measures the transversal displacement of some when cotton rope elongates or shortens with friction speed on coordinate axis ad-hoc location, under verifying given initial excitation condition, the accuracy of the mobile cotton rope of elongated degree numerical solution algorithm of specified point transverse vibration model in coordinate axis.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the present invention can obtain various operating mode and corresponding lower transversal displacement thereof, for verifying the result of numerical computation method, thus is further used for the control that mobile rope vibrates; Also may be used for the experiment porch as College Specialized Course Education and scientific research;
2, the present invention is by linear electric motors and synchronous motor layout spatially and switched by the start and stop combination of button and each motor of Single-chip Controlling that measured length moves rope, elongated degree is mobile restricts and these three kinds of experiment models of static line, and structure simply and integrated level is high;
3, existing technology displacement transducer is fixing and rope is mobile, can only to the measurement of axial restraint coordinate axis assigned address point, and can not to the tracking measurement of transfer point.And apparatus of the present invention are except realizing prior art to except the measurement of fixed position point, by controlling the first linear electric motors and the second linear electric motors and be synchronized with the movement and controlling the second linear electric motors and being synchronized with the movement of synchronous motor can also realize displacement transducer to the upper tracking measurement of specifying particle of mobile rope.And the tracking measurement of the upper specified point of mobile rope has practical significance for the engineering problem such as object vibration, the vibration of hawser elevator cab on research travelling belt;
4, apparatus of the present invention are provided with the shift scale measuring initial position and the tensioner apparatus measuring rope tension on mobile rope, experiment parameter (initial displacement, tension force) is made to be measurable and controllable, enrich the operating mode of experiment, also to verify numerical result under various working;
5 apparatus of the present invention adopt non-contacting sensor to be synchronized with the movement the displacement of measuring transfer point, avoid the additional interference to measured point.Existing technology or employing touch sensor, can bring additional interference; Or employing non-contacting sensor, but sensor fixed installation, mobile particle can not be measured.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 a is that fixed length rope moves system schematic;
Fig. 2 b is that the rope extended moves system schematic;
Fig. 2 c is that the rope shortened moves system schematic;
Number in the figure: 1 cotton rope, 2 left end guide wheels, 3 stretching pulleys, 4 weight beams, 5 adjustable moving slide blocks, 6 spoolers, 7 shift scale, 8 first line slideways, 9 right-hand member guide wheels, 10 first linear electric motors, 11 base plates, 12 synchronous motors, 13 reels, 14 second line slideways, 15 motors drive and single chip control unit, 16 control panel for motors, 17 left sliders, 18 computing machines, 19 vibration signals collecting conditioning systems, 20 second linear electric motors, 21 right slide blocks, 22 crossbeams, 23 non-contact displacement transducers.
Embodiment
See Fig. 1, the version moving axially rope transverse vibration measuring system in the present embodiment is:
Arrange train, cotton rope 1 is arranged on wheel and fastens, and train at one end sets gradually as stretching pulley 3, left end guide wheel 2, right-hand member guide wheel 9 and reel 13 by the trend of cotton rope 1 from spooler 6, and the two ends of cotton rope 1 are connected on spooler 6 and reel 13; Spooler 6 provides cotton rope to reclaim power with volute spring; Reel 13 is driven by synchronous motor 12; On cotton rope 1, be on the long center of initial rope shift scale 7 is set; Shift scale 7 is arranged in the long center of initial rope, when the starting condition of cotton rope transverse vibration is given cotton rope central point displacement, can measure the displacement size of this point, for numerical evaluation.
Spooler 6 and left end guide wheel 2 are fixedly installed on framework platform, and right-hand member guide wheel 9 and synchronous motor 12 are fixedly installed on the mobile platform of the first linear electric motors 10; Stretching pulley 3 is arranged on adjustable moving slide block 5, and adjustable moving slide block 5 is set with the weight beam 4 of the tensioning dynamics for detecting stretching pulley 3;
The mobile platform of the first linear electric motors 10 is bearing on the first line slideway 8, and can with the speed of setting and direction rectilinear movement on the first line slideway 8; First line slideway 8 moves direction along rope and is fixedly installed on framework platform;
In the below of cotton rope 1, arrange coordinate axis along cotton rope moving direction, coordinate axis is fixedly installed on the base plate 11 with framework platform consolidation, and the starting point of coordinate axis is the starting point of cotton rope at left end guide wheel;
Arranging sensor-based system is: being parallel to each other with the first line slideway 8 directly over cotton rope is fixedly installed the second line slideway 14, second linear electric motors 20 are supported on the second line slideway 20, and can move on the second line slideway 14, be fixedly installed crossbeam 22 in the bottom of the second linear electric motors 20, non-contact displacement transducer 23 is disposed on the bottom of crossbeam 22.In order to improve the rigidity of crossbeam 22, avoid crossbeam 22 when mobile, produce vibration and increase measuring error, on the second line slideway 14, be positioned at two of the second linear electric motors 20 to part on the left side and do not arrange left slider 17 and right slide block 21, crossbeam 22 is fixedly installed on the second linear electric motors 20, left slider 17 and right slide block 21 simultaneously.
In the present embodiment, non-contact displacement transducer 23 adopts laser or eddy current sensor, and non-contact displacement transducer 23 can arrange several as required, and location arrangements as required, on crossbeam 22, is namely positioned at directly over cotton rope 1.Each sensor can to measure immediately below it on cotton rope particle in the displacement of vertical direction.The data that non-contact displacement transducer 23 is measured are undertaken gathering and nursing one's health by vibration signals collecting conditioning system 19, and are stored on computing machine 18.The start and stop of synchronous motor 12, first linear electric motors 10 and the second linear electric motors 20, speed and direction drive by motor and control module 15 carries out driving and controlling, thus simulate multiple mobile rope operating mode, meet the demand of various experimental program, and controlled by control panel for motor 16 by experimenter.
The application that the present invention moves axially rope transverse vibration measuring system is:
Measuring method one:
Synchronous motor 12 keeps motionless, second linear electric motors 20 and the first linear electric motors 10 are with the synchronous shift to right or left of given speed, to cotton rope one initial excitation, non-contact displacement transducer 23 when cotton rope 1 elongates or shortens, tracking measurement cotton rope is specified the transversal displacement of particle when mobile, under verifying given initial excitation, the accuracy of the numerical solution algorithm of particle transverse vibration model on the mobile cotton rope of elongated degree;
Measuring method two,
First linear electric motors 10 keep motionless, second linear electric motors 20 and synchronous motor 12 make non-contact displacement transducer 23 and cotton rope 1 synchronously move to left with setting speed or move to right, cotton rope length between left end guide wheel 2 and right-hand member guide wheel 9 is fixed value, on cotton rope, particle is mobile status, to the excitation that one, cotton rope is initial, by the transversal displacement of non-contact displacement transducer 23 tracking measurement measured length cotton rope being specified particle when mobile, under verifying given initial excitation condition, measured length moves the accuracy of the numerical solution algorithm of particle transverse vibration model on cotton rope;
Measuring method three:
Second linear electric motors 20 and synchronous motor 12 keep motionless, first linear electric motors 10 are with setting speed shift to right or left, the position of non-contact displacement transducer 23 is fixed, to cotton rope initial excitation, non-contact displacement transducer 23 measures the transversal displacement of some when cotton rope elongates or shortens with friction speed on coordinate axis ad-hoc location, under verifying given initial excitation condition, the accuracy of the mobile cotton rope of elongated degree numerical solution algorithm of specified point transverse vibration model in coordinate axis;
Measuring method four:
First linear electric motors 10 and the second linear electric motors 20 keep motionless, synchronous motor 12 with setting speed clockwise or rotate counterclockwise, the length of cotton rope 1 between left end guide wheel 2 and right-hand member guide wheel 9 is fixed, and with setting speed shift to right or left, the position of non-contact displacement transducer 23 is fixed, to cotton rope initial excitation, the transversal displacement of some when measured length cotton rope to move to left with friction speed or moves to right on coordinate axis ad-hoc location is measured by non-contact displacement transducer 23, under verifying given initial excitation condition, measured length moves the accuracy of cotton rope numerical solution algorithm of specified point transverse vibration model in coordinate axis,
Measuring method five
First linear electric motors 10 and the second linear electric motors 20 and synchronous motor 12 all keep motionless, cotton rope 1 and non-contact displacement transducer 23 are fixing, to cotton rope initial excitation, measure by non-contact displacement transducer 23 transversal displacement that given particle on cotton rope is fixed at two ends.Under verifying given initial excitation condition, the accuracy of cotton rope numerical solution algorithm of specified point transverse vibration model in coordinate axis is fixed at two ends.
The present invention's initial excitation mode is in use that displacement size is obtained by shift scale 7 to the particle of the long midpoint of an initial rope given specific initial transversal displacement.By changing the material of rope, as steel band, nylon, strap, belt etc., different vibration characteristics can be obtained.
Claims (1)
1. move axially a measuring method for rope transverse vibration measuring system, described in move axially rope transverse vibration measuring system vibrational power flow be:
Train is set, cotton rope (1) is arranged on described wheel and fastens, described train at one end sets gradually as stretching pulley (3), left end guide wheel (2), right-hand member guide wheel (9) and reel (13) by the trend of cotton rope (1) from spooler (6), and the two ends of cotton rope (1) are connected on spooler (6) and reel (13); Described spooler (6) provides cotton rope to reclaim power with volute spring; Described reel (13) is driven by synchronous motor (12); Upper at described cotton rope (1), to be in initial rope length center arranges shift scale (7);
Described spooler (6) and left end guide wheel (2) are fixedly installed on framework platform, and described right-hand member guide wheel (9) and synchronous motor (12) are fixedly installed on the mobile platform of the first linear electric motors (10); Described stretching pulley (3) is arranged on adjustable moving slide block (5), and described adjustable moving slide block (5) is set with the weight beam (4) of the tensioning dynamics for detecting stretching pulley (3);
The mobile platform of described first linear electric motors (10) is bearing on the first line slideway (8), and can with the speed of setting and direction rectilinear movement on described first line slideway (8); Described first line slideway (8) is moved direction along rope and is fixedly installed on framework platform;
Cotton rope (1) below, along cotton rope moving direction, coordinate axis is set, described coordinate axis is fixedly installed on the base plate (11) with described framework platform consolidation, and the starting point of described coordinate axis is the starting point of cotton rope at left end guide wheel;
Arranging sensor-based system is: being parallel to each other with the first line slideway (8) directly over described cotton rope is fixedly installed the second line slideway (14), second linear electric motors (20) are supported on described second line slideway (14), and can be upper mobile described second line slideway (14), be fixedly installed crossbeam (22) in the bottom of described second linear electric motors (20), non-contact displacement transducer (23) is disposed on the bottom of described crossbeam (22);
It is characterized in that: described in move axially rope transverse vibration measuring system measuring method be:
Second linear electric motors (20) and synchronous motor (12) keep motionless, first linear electric motors (10) are with setting speed shift to right or left, the position of non-contact displacement transducer (23) is fixed, to cotton rope initial excitation, non-contact displacement transducer (23) measures the transversal displacement of some when cotton rope elongates or shortens with friction speed on coordinate axis ad-hoc location, under verifying given initial excitation condition, the accuracy of the mobile cotton rope of elongated degree numerical solution algorithm of specified point transverse vibration model in coordinate axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410577429.7A CN104266750B (en) | 2013-01-25 | 2013-01-25 | Measurement method for transverse vibration measurement system of axial movement rope |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410577429.7A CN104266750B (en) | 2013-01-25 | 2013-01-25 | Measurement method for transverse vibration measurement system of axial movement rope |
| CN201310029837.4A CN103105228B (en) | 2013-01-25 | 2013-01-25 | Axially moving rope transverse vibration measuring system and application thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310029837.4A Division CN103105228B (en) | 2013-01-25 | 2013-01-25 | Axially moving rope transverse vibration measuring system and application thereof |
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| Publication Number | Publication Date |
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| CN104266750A true CN104266750A (en) | 2015-01-07 |
| CN104266750B CN104266750B (en) | 2017-02-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU465591A1 (en) * | 1973-01-04 | 1975-03-30 | Каунасский Политехнический Институт | Device for measuring transverse vibrations of a power tape |
| JP3690971B2 (en) * | 2000-08-07 | 2005-08-31 | 株式会社日立製作所 | Rolling equipment with shape detection device |
| JP5306640B2 (en) * | 2007-12-17 | 2013-10-02 | 明産株式会社 | Sheet sagging evaluation method and evaluation apparatus |
| CN101750179B (en) * | 2008-12-12 | 2013-01-09 | 上海电机学院 | Tension detecting method and device of cloth |
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