CN105222982B - A kind of wide range high rigidity loading head for balance calibration system - Google Patents
A kind of wide range high rigidity loading head for balance calibration system Download PDFInfo
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- CN105222982B CN105222982B CN201510762552.0A CN201510762552A CN105222982B CN 105222982 B CN105222982 B CN 105222982B CN 201510762552 A CN201510762552 A CN 201510762552A CN 105222982 B CN105222982 B CN 105222982B
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- inner sleeve
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- loading head
- sleeve
- calibration system
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Abstract
The present invention provides a kind of wide range high rigidity loading head for balance calibration system, including inner sleeve, outer sleeve, inner sleeve positioner, high-precision oscillating bearing and curved bar；Inner sleeve is connected by corresponding tapered sleeve with by the model end of school balance, outer sleeve is loaded on the outside of inner sleeve, inner sleeve positioner is installed on outer sleeve, and clamp force is fixed inner sleeve by screw, limit the free degree of its all directions, the high-precision oscillating bearing other end is connected with calibration system force transmission element, and curved bar is connected with inner sleeve.This loading head possesses high bearing capacity, and rigidity is high, the advantages of fast and accurately positioning to inner sleeve.
Description
Technical field
The present invention relates to rating test device, and in particular to a kind of wide range high rigidity for balance calibration system loads
Head.
Background technology
Wind-tunnel balance is one of key equipment of wind tunnel force measurement experiment, and the precision of balance directly affects Wind Tunnel Data
Accuracy.Balance is measuring instrument, cannot be used without demarcation, the demarcation of balance is come complete by balance calibration system
Into, and loading head is the important component of balance calibration system, it is necessary to possess enough rigidity, and can accurately determine and add
Loading point position.For many years, simulate the working condition of balance using loading head always in balance calibration loading and then try to achieve day
Flat formula, but building up in succession with the big test section size high Reynola number wind tunnel in China, wind tunnel test load is also larger therewith
Lifting, traditional loading head structure type have that rigidity is weak, top and dead head contact stress is big, can not ensure just under wide range
The problems such as true loading position, the working condition of balance can not be simulated, load accurately can not be applied to balance.
The content of the invention
The present invention provides a kind of wide range high rigidity loading head for balance calibration system, solves in balance calibration system
The problem of loading head insufficient rigidity, big top and dead head contact stress.
The present invention is achieved using following technical scheme：
A kind of wide range high rigidity loading head for balance calibration system, including the positioning of inner sleeve, outer sleeve, inner sleeve
Device, high-precision oscillating bearing and curved bar；Inner sleeve is connected by corresponding tapered sleeve with by the model end of school balance, outer sleeve
Loaded on the outside of inner sleeve, inner sleeve positioner is installed on outer sleeve, and clamp force is fixed inner sleeve by screw, limit
The free degree of its all directions is made, the high-precision oscillating bearing other end is connected with calibration system force transmission element, curved bar and inner sleeve
It is connected.
The present invention also has following technical characteristic：
In use, according to the size of balance to be measured, inner sleeve is moved into specified location using curved bar, ensure the balance school heart with
Loading head center superposition, inner sleeve is fixed with inner sleeve positioner；Loading head is arranged on calibration center, load(ing) point is with passing
Power part is connected, and load caused by power source is delivered on loading head respectively by loading system of axis requirement with certain power transmission than accurate
Individual load(ing) point, the load loading of balance is completed, finally realizes balance calibration.
Advantages of the present invention and feature are：
(1) load(ing) point uses high-precision oscillating bearing, possesses the advantages that high bearing capacity, automatic aligning；
(2) by increasing outer sieeve diameter, the Optimized Measures such as the arm of force is reduced, significantly improve loading head rigidity, school is treated in guarantee
The accuracy of quasi- balance；
(3) by the structure design of curved bar and correlated parts, fast and accurately inner sleeve can be positioned.
Brief description of the drawings
Fig. 1 loading head structure top views；
Fig. 2 loading head structural front views；
Fig. 3 loading head structure sectional views；
Fig. 4 load(ing) point distribution schematic diagrams.
Embodiment
Illustrate and further illustrate below according to Figure of description：
As shown in Figures 1 to 3, a kind of wide range high rigidity loading head for balance calibration system, including it is inner sleeve 1, outer
Sleeve 2, inner sleeve positioner 3, high-precision oscillating bearing 4 and curved bar 5；Inner sleeve 1 is by corresponding tapered sleeve and by school balance
Model end be connected, loaded on the outside of inner sleeve 1, inner sleeve positioner is installed on outer sleeve outer sleeve 2, and passes through screw
Inner sleeve is fixed by clamp force, limits the free degree of its all directions, high-precision one end of oscillating bearing 4 is connected with loading head
Connect, the high-precision other end of oscillating bearing 4 is connected with calibration system force transmission element, and curved bar 5 is connected with inner sleeve 1.
Inner sleeve 1 is connected by corresponding tapered sleeve with by the model end of school balance, can be with different size by changing tapered sleeve
The balance of size is connected, and realizes inner sleeve 1 coaxial with outer sleeve 2 and accurate adjustment vertically and positioning；Outer sleeve loads
Point is arranged on outer sleeve 2, by increasing diameter, reduces the measures such as the arm of force, in the case where meeting balance calibration range, increase
The rigidity of loading head；Inner sleeve positioner 3 is used for positioning, being fixed for inner sleeve axial displacement and roll angle；High accuracy
Oscillating bearing 4 plays a part of connecting loading head and calibration system force transmission element, has that loadable is big, is capable of the excellent of automatic aligning
Point；Curved bar 5 can fast and accurately adjust inner sleeve to specified location according to the size for being calibrated balance.In use, according to treating
The flat size of observation, inner sleeve 1 is moved into specified location using curved bar 5, ensures the balance school heart and loading head center superposition, with interior
Sleeve positioner 3 fixes inner sleeve 1；Loading head is arranged on calibration center, load(ing) point is connected with force transmission element, and power source produces
Load by the loading system of axis requirements, with certain power transmission than being accurately delivered to each load(ing) point on loading head, completion balance
A load loading, finally realize balance calibration.
Each micro (unit of load(ing) point displacement under 1 positive full scale of table：mm)
| Δx | ΔY | ΔZ | |
| G1 | 2.20E-02 | 5.20E-02 | 9.80E-03 |
| G2 | -2.60E-04 | 3.20E-03 | 1.30E-04 |
| G3 | 1.60E-02 | 1.60E-02 | 3.90E-03 |
| G4 | 1.40E-02 | -3.20E-02 | 8.50E-03 |
| G6 | -4.20E-03 | -2.00E-04 | 3.30E-04 |
| G8 | -1.40E-02 | -1.70E-03 | 6.60E-03 |
| G9 | -2.90E-02 | 6.50E-03 | 4.40E-03 |
| G12 | -1.50E-02 | -1.30E-03 | 5.00E-03 |
| G14 | -1.40E-02 | 9.10E-03 | -2.40E-02 |
| G17 | -8.20E-04 | 1.10E-04 | -1.10E-03 |
Claims (2)
1. a kind of wide range high rigidity loading head for balance calibration system, including inner sleeve (1), outer sleeve (2), inner sleeve
Positioner (3), high-precision oscillating bearing (4) and curved bar (5)；It is characterized in that：Inner sleeve (1) passes through corresponding tapered sleeve and quilt
The model end of school balance is connected, and for outer sleeve (2) loaded on the outside of inner sleeve (1), inner sleeve positioner (3) is installed on outer sleeve
(2) on, and inner sleeve (1) is fixed by clamp force by screw, limits the free degree of its all directions, high-precision oscillating bearing
(4) one end is connected with loading head, and high-precision oscillating bearing (4) other end is connected with calibration system force transmission element, curved bar (5) with
Inner sleeve (1) is connected.
A kind of 2. wide range high rigidity loading head for balance calibration system according to claim 1, it is characterised in that：
In use, according to the size of balance to be measured, inner sleeve (1) is moved into specified location using curved bar (5), ensures the balance school heart with adding
Carrier head center superposition, it is with inner sleeve positioner (3) that inner sleeve (1) is fixed；Loading head is arranged on calibration center, load(ing) point
It is connected with force transmission element, load caused by power source than is accurately delivered to loading head by loading system of axis requirement with certain power transmission
Upper each load(ing) point, the load loading of balance is completed, finally realizes balance calibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510762552.0A CN105222982B (en) | 2015-11-06 | 2015-11-03 | A kind of wide range high rigidity loading head for balance calibration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510762552.0A CN105222982B (en) | 2015-11-06 | 2015-11-03 | A kind of wide range high rigidity loading head for balance calibration system |
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| Publication Number | Publication Date |
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| CN105222982A CN105222982A (en) | 2016-01-06 |
| CN105222982B true CN105222982B (en) | 2017-12-15 |
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| CN201510762552.0A Active CN105222982B (en) | 2015-11-06 | 2015-11-03 | A kind of wide range high rigidity loading head for balance calibration system |
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Cited By (1)
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| CN110595726A (en) * | 2019-10-17 | 2019-12-20 | 中国空气动力研究与发展中心超高速空气动力研究所 | Light loading head for rod type balance statics and using method thereof |
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| CN106969902B (en) * | 2016-12-31 | 2019-11-12 | 重庆大学 | Six COMPONENT BALANCE of ultralow temperature calibrates loading head and loading method |
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| CN113740026A (en) * | 2021-08-20 | 2021-12-03 | 中国航天空气动力技术研究院 | Novel wind tunnel balance loading sleeve and wind tunnel balance calibration method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110595726A (en) * | 2019-10-17 | 2019-12-20 | 中国空气动力研究与发展中心超高速空气动力研究所 | Light loading head for rod type balance statics and using method thereof |
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| CN105222982A (en) | 2016-01-06 |
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