CN103625655B - Strain balance temperature affects calibration system - Google Patents
Strain balance temperature affects calibration system Download PDFInfo
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- CN103625655B CN103625655B CN201310718447.8A CN201310718447A CN103625655B CN 103625655 B CN103625655 B CN 103625655B CN 201310718447 A CN201310718447 A CN 201310718447A CN 103625655 B CN103625655 B CN 103625655B
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Abstract
The invention discloses a kind of strain balance temperature and affect calibration system, belong to the test equipment field of flight test, it comprises bracing frame; Balance loading head and counterweight load maintainer, counterweight load maintainer has counterweight loading unit and lifting unit; Wherein counterweight loading unit comprises pipe link; Multiple counterweights that length direction along pipe link is sequentially arranged in the multiple scale pan on pipe link and sets gradually along the orientation of multiple scale pan, the bottom surface of arbitrary counterweight is provided with the first counterbore, at the bottom of the hole of the first counterbore, the thickness direction of counterweight is provided with the first through hole, the diameter of the first counterbore is greater than the diameter of scale pan, and the diameter of the first through hole is less than the diameter of scale pan; Pipe link successively through the first through hole of multiple counterweight, multiple scale pan be arranged in multiple counterweight the first counterbore and with multiple first counterbore one_to_one corresponding.The present invention achieves the automatic step load or unload of counterweight by technique scheme, can adapt to different ambient temperatures.
Description
Technical field
The invention belongs to the test equipment field of flight test, particularly a kind of strain balance temperature affects calibration system.
Background technology
During airship flight, the pulling force of screw propeller and torque data are the important initial conditions of its Aerodynamic Parameter Identification, because High Altitude Airship flying height is about 20km, bar pressure is only about 1/20 of standard atmosphere, simultaneously flying speed is very low, proposes larger challenge to the flow field simulation of force test in wind tunnel and test technology.Flight test is a reasonable selection, effectively can evade the dimensional effect in wind tunnel test, tunnel wall interference, support interferences error factors.Test equipment two COMPONENT BALANCE of flight test, under different temperature environments, balance data-signal, sensitivity easily produce drift, reduce the accuracy of flight test test data.
Summary of the invention
In order to solve the problem of prior art, embodiments providing a kind of strain balance temperature affects calibration system, and it comprises: top is fixed with the bracing frame of described strain balance; The balance loading head be connected with described strain balance; And the counterweight load maintainer to be connected with described balance loading head, described counterweight load maintainer has counterweight loading unit and for making described counterweight loading unit do the lifting unit moved up and down at vertical direction; Wherein, described counterweight loading unit comprises: the pipe link be vertically connected with described balance loading head; Length direction along described pipe link is sequentially arranged in the multiple scale pans on described pipe link; With multiple counterweights that the orientation along multiple described scale pan sets gradually, the bottom surface of the arbitrary counterweight in multiple described counterweight is provided with the first counterbore, at the bottom of the hole of described first counterbore, the thickness direction of described counterweight is provided with the first through hole, the diameter of described first counterbore is greater than the diameter of described scale pan, and the diameter of described first through hole is less than the diameter of described scale pan; Described pipe link is successively through the first through hole of multiple described counterweight, and multiple described scale pan is arranged in the first counterbore of multiple described counterweight and multiple described scale pan and multiple described first counterbore one_to_one corresponding; During calibration, hang on multiple described scale pan successively under the drive that multiple described counterweight moves down at described lifting unit, under the drive that described lifting unit moves up, depart from multiple described scale pan successively.
Affect calibration system in strain balance temperature as above, preferably, described lifting unit comprises: provide the motor driving power; The spiral lift be connected with the output shaft of described motor, the telescopic end of described spiral lift is provided with pallet, described pallet contacts with the counterweight that in multiple described counterweight, position is minimum in described orientation, and described pallet is provided with the second through hole that diameter is greater than the diameter of described scale pan.
Affect calibration system in strain balance temperature as above, preferably, described strain balance temperature affects calibration system and also comprises: be positioned at the base plate below support frame as described above and described counterweight load maintainer.
Affect calibration system in strain balance temperature as above, preferably, be fixed with stagger angle and pulley in the bottom surface of described base plate.
Affect calibration system in strain balance temperature as above, preferably, in described motor, scribble low gentle grease.
Affect calibration system in strain balance temperature as above, preferably, described lifting unit comprises: provide the motor driving power; The spiral lift be connected with the output shaft of described motor, the telescopic end of described spiral lift is provided with pallet, described pallet contacts with the counterweight that in multiple described counterweight, position is minimum in described orientation, and described pallet is provided with the second through hole that diameter is greater than the diameter of described scale pan.
Affect calibration system in strain balance temperature as above, preferably, the quantity of described counterweight load maintainer is two, lays respectively at the two ends of described balance loading head.
The beneficial effect that the embodiment of the present invention is brought is as follows:
By affecting in calibration system the automatic step load or unload adopting counterweight load maintainer to realize counterweight in strain balance temperature, different ambient temperatures can be adapted to, thus obtain strain balance correction data at different ambient temperatures, improve the accuracy of flight test test data.
Accompanying drawing explanation
Fig. 1 is the structural representation that a kind of strain balance temperature for calibrating the rolling moment of strain balance that the embodiment of the present invention provides affects calibration system;
Fig. 2 is the structural representation of a kind of counterweight loading unit that the embodiment of the present invention provides;
Fig. 3 is the structural representation of a kind of lifting unit that the embodiment of the present invention provides;
Wherein, in figure, nomenclature is as follows:
1 strain balance, 2 counterweight loading units, 3 lifting units,
41 base plates, 42 stagger angles, 43 pulleys, 5 bracing frames,
6 balance loading heads, 7 pipe links, 8 counterweights, 81 first counterbores,
82 first through holes, 83 second counterbores, 9 scale pans,
10 pallets, 11 spiral lifts, 12 motors, 13 motor mounting racks.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
See Fig. 1-Fig. 3, embodiments provide a kind of strain balance temperature and affect calibration system, it comprises: for the bracing frame 5 providing support to strain balance 1, the balance loading head 6 power be subject to being passed to strain balance 1 and counterweight load maintainer balance loading head 6 being applied to application force.
Wherein, strain balance 1 is arranged on the top of bracing frame 5, and strain balance 1 and balance loading head 6 are bolted.
Counterweight load maintainer is included in vertical direction and does the lifting unit 3 that moves up and down and realize the counterweight loading unit 2 that automatically loads under the drive that moves up and down at lifting unit 3.
Particularly, lifting unit 3 comprises: provide the motor 12 and spiral lift 11 that drive power, the telescopic end of spiral lift 11 is provided with the pallet 10 be connected with counterweight loading unit 2, spiral lift 11 moves up and down at vertical direction under the driving of motor 12, thus drive pallet 10 to move up and down at vertical direction, and then counterweight loading unit 2 is driven to move up and down.Because motor 12 can vibrate in operational process, produce drift, fixed by mounted motor erecting frame 13.In other embodiments, lifting unit 3 can also comprise: motor and hydraulic ram.
Counterweight loading unit 2 comprises pipe link 7, multiple scale pan 9 and multiple counterweight 8.
Wherein, pipe link 7 is vertically connected with balance loading head 6, such as, be threaded, be socketed.Pipe link 7 is arranged in order along the length direction of pipe link 7 and arranges multiple scale pan 9, scale pan 9 is for tangling counterweight 8, and multiple scale pan 9 and multiple counterweight 8 one_to_one corresponding, a scale pan 9 tangles a counterweight 8.
Any one counterweight 8 in multiple counterweight 8 has end face and bottom surface.Along having the first counterbore 81 from bottom surface to the direction of end face on bottom surface, along having the first through hole 82 from bottom surface to the direction of end face at the bottom of the hole of the first counterbore 81, this first through hole 82 is communicated with at the bottom of the hole of end face and the first counterbore 81.In order to make counterweight 8 when losing bearing force, scale pan 9 tangles counterweight 8, and the diameter of the first counterbore 81 is greater than the diameter of scale pan 9, and the diameter of the first through hole 82 is less than the diameter of scale pan 9.When mounted, pipe link 7 is successively through the first through hole 82 of multiple counterweight 8, and multiple scale pan 9 is arranged in the first counterbore 81 of multiple counterweight 8.Pallet 10 contacts with the counterweight that in multiple counterweight 8, position is minimum in the orientation of scale pan 9, and pallet 10 is provided with the second through hole, and the diameter of the second through hole is greater than the diameter of scale pan 9, to make the pipe link 7 being provided with scale pan 9 through the second through hole.
Counterweight load maintainer is when initial condition, and multiple counterweight 8 is sequentially laminated on above pallet 10 along the length direction of pipe link 7, and now scale pan 9 is arranged in the first counterbore 81 of counterweight 8, and does not contact with counterweight 8.
Counterweight is loaded when calibrating, horizontal addload head 6, pipe link 7 and scale pan 9 maintain static, and motor 12 drives spiral lift 11 to move down, and drive pallet 10 to move down, because the multiple counterweights 8 be layered on pallet 10 lose bearing force, move down under gravity.In scale pan orientation, the scale pan that the counterweight 8 that in multiple counterweight 8, position is the highest is first the highest with position in multiple scale pan 9 contacts, thus hangs on pipe link 7, and then applies application force to balance loading head 6, power is passed to strain balance 1.Along with spiral lift 11 continue move down, all the other counterweights 8 contact with all the other scale pans 9 successively, and then hang over successively on pipe link 7, realize the automatic loading of multiple counterweight.Because counterweight 8 is gauge members, achieve steps automatic loading counterweight by counterweight load maintainer.
The unloading counterweight when calibrating, horizontal addload head 6, pipe link 7 and scale pan 9 maintain static, motor 12 drives spiral lift 11 to move up, pallet 10 is driven to move up, in scale pan orientation, hang over the counterweight 8 that in the counterweight on scale pan 9, position is minimum first not contact with scale pan 9 under the support of pallet, thus depart from pipe link 7, and then the application force making this counterweight 8 be applied on balance loading head 6 disappears, continuation along with spiral lift 11 moves, all the other counterweights 8 do not contact with scale pan 9 successively, and then depart from pipe link 7 successively, realize the Self-tipping of multiple counterweight.Because counterweight 8 is gauge members, achieve steps Self-tipping counterweight by counterweight load maintainer.
It should be noted that, because multiple scale pan is arranged on the diverse location of pipe link, and each scale pan and each counterweight one_to_one corresponding, that is be connected by pipe link between counterweight with counterweight, the stroke that each counterweight moves up and down is fixing, thus makes multiple counterweight realize automatically loading by using the pipe link of different length.Connection mode between this counterweight is simple, is convenient to install.This strain balance temperature affects calibration system and can be used for the lower automatic loading correction of the temperature impact of multi-component balance, and the middle part of balance loading head is provided with third through-hole.
When calibrating, strain balance temperature affects calibration system and automatically can load counterweight and Self-tipping counterweight, thus making it under different ambient temperatures (high and low temperature environment), test out the numerical value (correction data) of strain balance to calibrate strain balance, ambient temperature range is preferably 100 DEG C to subzero 70 DEG C above freezing.In order to make motor 12 can in the environment that temperature is subzero long service life, in motor 12, scribble low gentle grease.
In practice, affect moving integrally of calibration system for the ease of strain balance temperature, the bottom of bracing frame is provided with base plate 41, counterweight load maintainer is arranged on base plate 41.Preferably, the bottom surface of base plate 41 is provided with stagger angle 42, preferably arranges in the bottom surface of base plate 41 4 corners.Bottom surface is also provided with pulley 43 and affects calibration system to be easy to mobile strain balance temperature.When mobile, regulate stagger angle 42 and the distance on ground, make pulley 43 and earth surface, stagger angle 42 not with earth surface.When calibrating, regulating stagger angle 42 and the distance on ground, making stagger angle 42 and earth surface, pulley 43 not with earth surface.
The end face of the arbitrary counterweight 8 in multiple counterweight is provided with the second counterbore 83, the degree of depth of the second counterbore 83 and the degree of depth sum of the first counterbore 81 are less than the thickness of counterweight 8, the diameter of the second counterbore 83 is greater than the diameter of scale pan 9, so makes the action radius of scale pan 9 larger, flexibly.
The rolling moment M of calibration system to strain balance is affected in employing strain balance temperature
xwhen calibrating, see Fig. 1, the quantity of counterweight load maintainer is two, lays respectively at the two ends of balance loading head.Particularly, the pipe link of counterweight load maintainer lays respectively at the two ends of balance loading head, and the middle part of balance loading head is connected with strain balance bolt.About now counterweight loading structure and above-mentioned counterweight load maintainer, there is same structure, repeat no longer one by one herein.
In sum, the embodiment of the present invention is by affecting in calibration system in strain balance temperature the automatic step load or unload adopting counterweight load maintainer to realize counterweight, different ambient temperatures can be adapted to, thus obtain strain balance correction data at different ambient temperatures, improve the accuracy of flight test test data.
These are only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. strain balance temperature affects a calibration system, it is characterized in that, described strain balance temperature affects calibration system and comprises:
Top is fixed with the bracing frame of described strain balance;
The balance loading head be connected with described strain balance; And
The counterweight load maintainer be connected with described balance loading head, described counterweight load maintainer has counterweight loading unit and for making described counterweight loading unit do the lifting unit moved up and down at vertical direction;
Wherein, described counterweight loading unit comprises:
The pipe link be vertically connected with described balance loading head;
Length direction along described pipe link is sequentially arranged in the multiple scale pans on described pipe link; With
Along multiple counterweights that the orientation of multiple described scale pan sets gradually, the bottom surface of any counterweight in multiple described counterweight is provided with the first counterbore, at the bottom of the hole of described first counterbore, the thickness direction of described counterweight is provided with the first through hole, the diameter of described first counterbore is greater than the diameter of described scale pan, and the diameter of described first through hole is less than the diameter of described scale pan;
Described pipe link is successively through the first through hole of multiple described counterweight, and multiple described scale pan is arranged in the first counterbore of multiple described counterweight and multiple described scale pan and multiple described first counterbore one_to_one corresponding;
During calibration, hang on multiple described scale pan successively under the drive that multiple described counterweight moves down at described lifting unit, under the drive that described lifting unit moves up, depart from multiple described scale pan successively.
2. strain balance temperature according to claim 1 affects calibration system, it is characterized in that, described lifting unit comprises:
The motor driving power is provided;
The spiral lift be connected with the output shaft of described motor, the telescopic end of described spiral lift is provided with pallet, described pallet contacts with the counterweight that in multiple described counterweight, position is minimum in described orientation, and described pallet is provided with the second through hole that diameter is greater than the diameter of described scale pan.
3. strain balance temperature according to claim 1 affects calibration system, it is characterized in that, described strain balance temperature affects calibration system and also comprises: be positioned at the base plate below support frame as described above and described counterweight load maintainer.
4. strain balance temperature according to claim 3 affects calibration system, it is characterized in that, is fixed with stagger angle and pulley in the bottom surface of described base plate.
5. strain balance temperature according to claim 2 affects calibration system, it is characterized in that, scribbles low gentle grease in described motor.
6. strain balance temperature according to claim 1 affects calibration system, it is characterized in that, the end face of the arbitrary counterweight in multiple described counterweight is provided with the second counterbore, the degree of depth of described second counterbore and the degree of depth sum of described first counterbore are less than the thickness of described counterweight, and the diameter of described second counterbore is greater than the diameter of described scale pan.
7. the strain balance temperature according to claim 1 or 6 affects calibration system, it is characterized in that, the quantity of described counterweight load maintainer is two, lays respectively at the two ends of described balance loading head.
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| CN201310718447.8A CN103625655B (en) | 2013-12-23 | 2013-12-23 | Strain balance temperature affects calibration system |
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| CN103625655B true CN103625655B (en) | 2015-11-18 |
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| CN104198113B (en) * | 2014-09-18 | 2017-02-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Double-end calibration device and calibration method |
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| CN113532789B (en) * | 2021-08-17 | 2023-03-21 | 中国空气动力研究与发展中心高速空气动力研究所 | Device for improving calibration uncertainty of half-mode balance and application |
| CN113532733B (en) * | 2021-08-27 | 2023-08-08 | 四川大学 | Thin film type pressure sensor calibration device and calibration method |
| CN114646449B (en) * | 2022-03-18 | 2023-06-23 | 中国空气动力研究与发展中心高速空气动力研究所 | Calibration method for double-clamped component balance |
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