CN205483405U - Uneven measuring device of rocker swing system - Google Patents
Uneven measuring device of rocker swing system Download PDFInfo
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- CN205483405U CN205483405U CN201521085900.7U CN201521085900U CN205483405U CN 205483405 U CN205483405 U CN 205483405U CN 201521085900 U CN201521085900 U CN 201521085900U CN 205483405 U CN205483405 U CN 205483405U
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- rocker
- bearing
- oscillation system
- rocker shaft
- reed
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Abstract
The utility model discloses an uneven measuring device of rocker swing system, including the measuring engine base, be provided with two bearing frames and bearing cap on the measuring engine base, the bearing frame on be connected with rocker shaft respectively, rocker shaft pass through the one end of rocker shaft flange joint in the rocker, be connected with the sley sword on the rocker, be connected with the reed on the sley sword, the rocker shaft of one side loop through the rocker, hand in hand, crank and clutch link to each other with the motor, crank connection has an encoder. The utility model discloses to the rocker of the different reed width of cloth, different type of construction, different diameters, various conditions such as different magnitudes of load, friction speed, can survey the disequilibrium of rocker swing system quantitatively, directly obtain data and curve, provide the basis with newly designing to the institutional advancement of rocker balanced system.
Description
Technical field
This utility model relates to a kind of rocker oscillation system disequilibrium survey device.
Background technology
Rocker oscillation system is made up of the another parts such as rocker tilting member, rolling bearing, crank and rocker mechanism.The workpiece of beating-up mechanism is reed, and the power acted on reed is delivered to rocker by slay, lay sword, and rocker oscillation system subjects whole active forces and the moment of beating-up mechanism.Air-jet loom is when running up, although rocker oscillation system pendulum angle about 25 °, but rocker produces strong twist and warping, reliability and the service life of beating-up mechanism work are closely related with the structural shape of rocker dynamic balancing and balance thereof.The rotating speed of air-jet loom is more and more higher, and load is increasingly heavier and Looms uses more and more, and the dynamic unbalance amount shaking shaft-bearing system is incremented by by rotating speed square, and the working environment of system tends to severe.Rocker oscillation system amount of unbalance is how many actually, and the design improvement to rocker oscillation system is most basic parameter, it is therefore necessary to measure rocker amount of unbalance.
The link Weft Beat-up Mechanism unbalance dynamic when high-speed motion, the quality of unbalance dynamic produces impulsive force and impact moment.The reed being connected with rocker is the workpiece of beating-up mechanism, and the Mass Distribution of rocker system is the most uneven.Loom rotating speed is more and more higher, and unbalance dynamic becomes serious, then installs the rightabout increase balance weight of reed at rocker, and in the hope of reaching dynamic equilibrium, but balance weight adds the quality of rocker.Therefore preferably rocker structural requirement both balanced, and did not the most increase quality.
High speed rotor brings unbalance dynamic, general balance method to refer to the balance of rotor.Now to liking the rocker swung, rocker tilting member is the most asymmetric parts of rotary inertia, the rotary inertia of tilting member concentrates on the one side of rocker centrage, and the moment of inertia imbalance of rocker tilting member and cyclically-varying are the origin causes of formation of rocker reversed torsion and torsional oscillation.Accordingly, it would be desirable to a kind of high speed swinging shaft balancing method.
Rocker oscillation system structure is complicated, and simple calculating can not obtain the characteristic value of system, and the best way is the dynamic characteristic of measurement system.
Utility model content
The purpose of this utility model is the problem above overcoming prior art to exist, a kind of rocker oscillation system disequilibrium survey device is provided, for different reed width, different structure type, the rockers of different-diameter, the various conditions such as different loads size, friction speed, the imbalance of rocker oscillation system can be measured quantitatively, directly obtain data and curve, the structure of rocker balance system is improved and new design provides foundation.
For realizing above-mentioned technical purpose, reaching above-mentioned technique effect, this utility model is achieved through the following technical solutions:
A kind of rocker oscillation system disequilibrium survey device, including measuring machine base, two bearing blocks and bearing cap it is provided with on described measuring machine base, it is connected to rocker shaft on described bearing block, described rocker shaft is connected to one end of rocker by rocker shaft flange, and described rocker connects lay sword, and lay sword connects reed, the rocker shaft of described side pass sequentially through rocking bar, hand in hand, crank be connected with motor with clutch, the connection of described crank has an encoder；
Two described bearing block sides are connected to acceleration transducer, described measuring machine base side connects another acceleration transducer, described bearing cap is positioned at above axle center and is respectively arranged with a pressure transducer and two eddy current sensors, two described eddy current sensors are positioned at both sides, oblique upper, axle center and are mutually 90 degree, and described pressure transducer is positioned at directly over axle center；
Described eddy current sensor is connected to a fore-lying device, described pressure transducer connects transmitter, described acceleration transducer is connected to a load amplifier, and described fore-lying device, transmitter, load amplifier and encoder are connected to a signal analyzer.
Further, a first order mode of described balance rocker needs three rectifying planes, and the first rectifying plane is selected in described rocker middle, and the second rectifying plane, the 3rd rectifying plane are selected in described rocker shaft flange.
Further, described rocker middle connects the balance loading block having band half slot, and described rocker shaft flange side is connected to rectangle loading block.
Preferably, when rocker balanced operation, motor speed takes 900-1000 rev/min.
Further, also including clock signal generator, the time of surveying record is produced sequential by encoder, motor turns round, and drives encoder to turn round by gear pair, and the encoded device in angle of revolution is converted into angle, coding angle converted one-tenth digital signal, it is provided that measure the X-coordinate of sequential, i.e. experiment curv；The Y coordinate of another road i.e. curve of signal record motor message, display screen shows the orbit of shaft center with the change of motor shaft angle of revolution or accelerating curve.
The balance method of a kind of rocker oscillation system, chooses three rectifying planes that a first order mode needs on rocker, and the first rectifying plane is selected in described rocker middle, and the second rectifying plane, the 3rd rectifying plane are selected in described rocker shaft flange.
The beneficial effects of the utility model are:
1, this utility model is for different reed width, different structure type, the rockers of different-diameter, the various conditions such as different loads size, friction speed, the imbalance of rocker oscillation system can be measured quantitatively, directly obtain data and curve, the structure of rocker balance system is improved and new design provides foundation.
2, shaking shaft balancing and use the balance method of flexible balance staff, can release from frequency ratio and major failure, what rocker was produced impact is a first order mode.Balance a first order mode and need three rectifying planes.First rectifying plane selects the balance loading block of band half slot, is arranged on rocker middle part.Second and third rectifying plane selects rectangle loading block, is arranged in rocker shaft flange.
3, two piezoelectric acceleration transducers are arranged on the two bearings seat of left and right, measure the vibration being perpendicular on the horizontal direction bearing block of reed.
4, two eddy current sensor probes are mutually 90 degree, and for measuring the track of outer race axle center skew, orbit of shaft center is used in evaluates the machine performance swinging machinery.The orbit of shaft center of ball bearing can evaluate such as uneven, the amplitude of rocker bending, and orbit of shaft center shows the deviation post of bearing or the radial position of axle, the bending of instruction rocker and the abrasion of bearing simultaneously.If rocker axial line misaligns, with centrage the most point-blank, there is the azimuth of rocker bending in axial line, and maximum azimuth occurs in which angle of crank, and azimuthal variation curve explanation rocker runs the most stable.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be practiced according to the content of description, below with preferred embodiment of the present utility model and coordinate accompanying drawing describe in detail as after.Detailed description of the invention of the present utility model is shown in detail in by following example and accompanying drawing thereof.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by of the present utility model, constitutes the part of the application, and schematic description and description of the present utility model is used for explaining this utility model, is not intended that improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is rocker oscillation system disequilibrium survey device overall structure schematic diagram；
Fig. 2 is shaft turning mechanism schematic diagram；
Fig. 3 is balance loading block front view；
Fig. 4 is a kind of balance loading block left view；；
Fig. 5 is another kind of balance loading block left view；
Fig. 6 is rectangle loading block structure schematic diagram；
Fig. 7 is Fig. 7 right view；
Fig. 8 is acceleration transducer annexation schematic diagram；
Fig. 9 is bearing cover schematic diagram；
Figure 10 is signal analyzer annexation schematic diagram.
Detailed description of the invention
Below with reference to the accompanying drawings and in conjunction with the embodiments, this utility model is described in detail.
Rocker is the critical piece of beating-up mechanism for loom, rocker is the parts of an a length of 2000-4000 millimeter, rocker makees reciprocally swinging around axis, pendulum angle about 25 °, when rocker drives slay to be flapped toward fell, weft yarn is squeezed into fell by reed, and beating in a minute reaches thousands of times, during beating, rocker constantly bends and reverses.The workpiece of beating is reed, and the power acted on reed is delivered to rocker by slay, lay sword.Air-jet loom is when running up, although rocker oscillation system pendulum angle about 25 °, but rocker produces strong twist and warping, reliability and the service life of beating-up mechanism work are closely related with rocker balanced structure pattern.
High speed loom turn up 1000 revs/min, rocker is around axis oscillating, if rocker Mass Distribution is uniform, then rocker smooth running.But the reed being connected with rocker is the workpiece of beating-up mechanism, the most uneven for following the Mass Distribution of the system that rocker swings together, rocker tilting member is the most asymmetric parts of rotary inertia, and the rotary inertia of tilting member concentrates on the one side of rocker centrage.Air-jet loom rotating speed is more and more higher, load is increasingly heavier and Looms uses more and more, unbalanced quality produces unbalance dynamic power, and the dynamic unbalance amount shaking shaft-bearing system is incremented by by rotating speed square, the working environment of system tends to severe, unbalance dynamic becomes serious, and quantitative measurement rocker oscillation system imbalance is an element task.
With reference to shown in Fig. 1, Fig. 2, a kind of rocker oscillation system disequilibrium survey device, including measuring machine base 1, two bearing blocks 2 and bearing cap 3 it is provided with on described measuring machine base 1, it is connected to rocker shaft 4 on described bearing block 2, described rocker shaft 4 is connected to the two ends of rocker 6 by rocker shaft flange 5, connect on described rocker 6 and have lay sword 7, connect on lay sword 7 and have reed 8, the rocker shaft 4 of described side pass sequentially through rocking bar 9, hand in hand 10, crank 11 be connected with motor 14 with clutch 13, described crank 11 has an encoder 15 by gear pair 12 connection.Motor 14 first drives the crank 11 of a quadric chain, and the rotation of crank 11 is converted into the swing of rocking bar 6 through four-bar mechanism, swinging through rocker shaft 4 with the swing of rocker 6 of rocking bar 9.
Rocker 6 is a kind of to apply most rockers 6 in tubular construction, and rocker 6 diameter 120 millimeters, length is more than 2800 millimeters.Rocker 6 supported at two edges is on ball bearing, and rocker 6 and two ball bearings bear impulsive force and the moment of beating-up.
Tube construction formula rocker connects beating parts, what weft yarn was squeezed into fell is reed 8, beating parts include reed 8 and install the another part such as the lay sword 7 of reed, slay, lay sword 7 is welded on rocker 6, the combinative structure of the mass offset rocker axis of oscillation being made up of with reed 8 lay sword 7, slay, lay sword 7, slay and reed 8 defines the unbalanced construction of rocker.
Rocker oscillation system disequilibrium survey device and balance method:
The imbalance of rocker oscillation system includes two parts, and rocker swings inertia force and the inertia force of crank and rocker mechanism.The major part of rocker unbalanced construction is lay sword 7, slay and the quality of reed 8 composition, and this part mass is much larger than quality and the inertia force of crank and rocker mechanism.
First rank frequency of vibration about 52-56HZ of rocker oscillation system, the hunting frequency of rocker about 15-17
HZ, frequency ratio about 0.3.If it is the least that rocker moves deflection, can be considered rigid rotator, but the major failure that rocker is in operation is that rocker middle bent, the even ball bearing of middle part fracture and connection motor side have damage etc. more, this shows that the dynamic deflection of rocker is the most very important.Therefore shaking shaft balancing and use the balance method of flexible balance staff, can release from frequency ratio and major failure, what rocker was produced impact is a first order mode.Balance a first order mode and need three rectifying planes.
With reference to shown in Fig. 3 to Fig. 7, a first order mode of described balance rocker 6 needs three rectifying planes, and the first rectifying plane is selected in described rocker 6 middle, and the second rectifying plane, the 3rd rectifying plane are selected in described rocker shaft flange 5.First rectifying plane selects the balance loading block 24 of band half slot, is arranged on rocker 6 middle part.Second rectifying plane, the 3rd rectifying plane select rectangle loading block 25, are arranged on rocker shaft flange 5 side.
When rocker balanced operation, increase because imbalance raises with rotating speed, it is necessary to choose the rotating speed of balanced operation.Motor speed takes 900-1000 rev/min, and actual speed is higher than 1000 revs/min, just selects 1000 revs/min；Actual speed is less than 900 revs/min, just selects 900 revs/min.Therefore, when rocker balanced operation, motor speed takes 900-1000 rev/min.
The unbalanced state of evaluation rocker:
The vibration severity of rocker 6.The vibration severity of vibration severity and a machine is relevant with the size of machine, rigidity, support conditions, running speed etc., to compare with the vibration values measured on loom frame in the vibration values measuring airborne measurements.Measure vibration is piezoelectric acceleration transducer 16.
With reference to shown in Fig. 8, Fig. 9, two described bearing block 2 sides connect acceleration transducer 16, described measuring machine base 1 side connects acceleration transducer 16, two described bearing caps 3 are positioned at above axle center and are respectively arranged with a pressure transducer 18 and two eddy current sensors 19, two described eddy current sensors 19 are positioned at both sides, oblique upper, axle center and are mutually 90 degree, and described pressure transducer 18 is positioned at directly over axle center.
Measure rocker orbit of shaft center
Eddy current sensor 19 dynamically measures the axle center skew of rotating shaft or balance staff, and sensor probe does not contacts with tested ball bearing outer shroud, the change in the gap of probe energy perception probe and outer interannular, and high resolution bathymetric goes out the relative displacement change between outer race and probe.Eddy current sensor is widely used in the vibration monitoring of balance staff.Two eddy current sensor 19 probes are mutually 90, and for measuring the track of outer race axle center skew, orbit of shaft center is used in evaluates the machine performance swinging machinery.The orbit of shaft center of ball bearing can evaluate such as uneven, the amplitude of rocker 6 bending, and orbit of shaft center shows the deviation post of bearing or the radial position of axle, the bending of instruction rocker 6 and the abrasion of bearing simultaneously.If rocker axial line misaligns, with centrage the most point-blank, there is the azimuth of rocker bending in axial line, and maximum azimuth occurs in which angle of crank, and azimuthal variation curve explanation rocker runs the most stable.
Probe is arranged on bearing cap, in order to seek and visit the deformation of outer race.Rolling element is when bearing rotary, and when rolling element and the defective place of bearing collide, outer shroud can produce micro-strain.Rocker axle subjects whole active forces of beating-up mechanism, moment, and force transducer is placed in the surface of bearing cap
With reference to shown in Figure 10, described eddy current sensor 19 is connected to a fore-lying device 20, described pressure transducer 18 connects transmitter 21, described acceleration transducer 16 is connected to a load amplifier 22, and described fore-lying device 20, transmitter 21, load amplifier 22 and encoder 15 are connected to a signal analyzer 23.
Also including clock signal generator, the time of surveying record is produced sequential by encoder, and motor turns round, driving encoder to turn round by gear pair, the encoded device in angle of revolution is converted into angle, encodes angle converted one-tenth digital signal, the X-coordinate measuring sequential, i.e. experiment curv is provided；The Y coordinate of another road i.e. curve of signal record motor message, display screen shows the orbit of shaft center with the change of motor shaft angle of revolution or accelerating curve.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (4)
1. a rocker oscillation system disequilibrium survey device, it is characterized in that: include measuring machine base (1), described measuring machine base (1) both sides are provided with two bearing blocks (2) and bearing cap (3), it is connected to a rocker shaft (4) on two described bearing blocks (2), two described rocker shafts (4) are connected to one end of rocker (6) by rocker shaft flange (5), the upper connection of described rocker (6) has lay sword (7), the upper connection of lay sword (7) has reed (8), the rocker shaft (4) of described side passes sequentially through rocking bar (9), hand in hand (10), crank (11) is connected with motor (14) with clutch (13), described crank (11) connects an encoder (15)；
Two described bearing block (2) sides are connected to an acceleration transducer (16), described measuring machine base (1) side connects another acceleration transducer (16), two described bearing caps (3) are positioned at above axle center and are respectively arranged with a pressure transducer (18) and two eddy current sensors (19), two described eddy current sensors (19) are positioned at both sides, oblique upper, axle center and are mutually 90 degree, and described pressure transducer (18) is positioned at directly over axle center；
Described eddy current sensor (19) is connected to a fore-lying device (20), described pressure transducer (18) connects transmitter (21), described acceleration transducer (16) is connected to a load amplifier (22), and described fore-lying device (20), transmitter (21), load amplifier (22) and encoder (15) are connected to a signal analyzer (23).
Rocker oscillation system disequilibrium survey device the most according to claim 1, it is characterized in that: a first order mode of described balance rocker (6) needs three rectifying planes, first rectifying plane is selected in described rocker (6) middle, and the second rectifying plane, the 3rd rectifying plane are selected in described rocker shaft flange (5).
Rocker oscillation system disequilibrium survey device the most according to claim 2, it is characterized in that: described rocker (6) middle connects balance loading block (24) having band half slot, and described rocker shaft flange (5) side is connected to rectangle loading block (25).
Rocker oscillation system disequilibrium survey device the most according to claim 1, it is characterised in that: when rocker balanced operation, motor speed takes 900-1000 rev/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521085900.7U CN205483405U (en) | 2015-12-24 | 2015-12-24 | Uneven measuring device of rocker swing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521085900.7U CN205483405U (en) | 2015-12-24 | 2015-12-24 | Uneven measuring device of rocker swing system |
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| Publication Number | Publication Date |
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| CN205483405U true CN205483405U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521085900.7U Expired - Fee Related CN205483405U (en) | 2015-12-24 | 2015-12-24 | Uneven measuring device of rocker swing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424280A (en) * | 2015-12-24 | 2016-03-23 | 吴江万工机电设备有限公司 | Unbalance measuring device of rockshaft sway system |
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2015
- 2015-12-24 CN CN201521085900.7U patent/CN205483405U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424280A (en) * | 2015-12-24 | 2016-03-23 | 吴江万工机电设备有限公司 | Unbalance measuring device of rockshaft sway system |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20160817 Termination date: 20161224 |
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| CF01 | Termination of patent right due to non-payment of annual fee |