CN2235615Y - Internal six-component strain balance - Google Patents
Internal six-component strain balance Download PDFInfo
- Publication number
- CN2235615Y CN2235615Y CN 95212302 CN95212302U CN2235615Y CN 2235615 Y CN2235615 Y CN 2235615Y CN 95212302 CN95212302 CN 95212302 CN 95212302 U CN95212302 U CN 95212302U CN 2235615 Y CN2235615 Y CN 2235615Y
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- China
- Prior art keywords
- balance
- beams
- inner shaft
- elastic
- shaft element
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- Expired - Fee Related
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- 125000006850 spacer group Chemical group 0.000 claims description 5
- 230000009977 dual effect Effects 0.000 claims description 4
- 230000008520 organization Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 abstract description 10
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract 1
- 230000035882 stress Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Measurement Of Force In General (AREA)
Abstract
The utility model discloses a novel internal six-component strain balance, which comprises an inner shaft element, an outer sleeve element, an elastic beam, a cross-section beam and a limiting mechanism, wherein a structural scheme of 'double-cross winding elastic pivot' is adopted, two longitudinal beams are arranged at the outer side, and two lateral beams are arranged at the inner side; the balance is of an integral structure, namely four elastic beams are directly cut on the inner shaft element and are nested with the outer sleeve element, and the inner shaft element, the elastic beams and the outer sleeve element are welded, fixed and melted into a whole. The balance can measure six load components simultaneously, including: the normal force Y, the pitching moment Mz, the lateral force Z, the yawing moment My, the axial force Q and the rolling moment Mx can be particularly used for measuring the rolling moment with high sensitivity; the whole balance has strong longitudinal bearing capacity; the spacing clearance is adjusted accurately, and the device can be widely applied to the field of measurement and metering.
Description
The utility model relates to a kind of measurement mechanism, refers to a kind of highly sensitive interior formula six component strain balances of rolling moment that are applicable to wind tunnel test especially.
The breadboard single component balance of the disclosed India NAL of prior art (can only survey rolling moment Mx one-component), as shown in Figure 1, adopt " dual crossing is around bent resilient pivot " organization plan, totally four cross-elasticity beams of two couple of rolling moment unit is an alternately equidistant placement of two of vertical two and side direction, and inner shaft element and elastic beam and overcoat element etc. is assembly structure.This balance not only physical dimension is big, and integral rigidity is poor, and when assembling elastic beam produce bigger internal stress, this both uncontrollable internal stress that can not eliminate then can directly influence the effective utilization of balance; Not return zero-sum mechanical hysteresis phenomenon comparatively serious in impact during wind tunnel test in addition.The assembled balance has limited the development of this class balance to mini-seriesization owing to need certain assembly structure and assembly space.This balance only is a simple component version, can only measure the load of a unit of rolling moment, has so not only limited the usable range of balance, and because blowing expense costliness, and it is also very uneconomical that once blowing only records the load of one-component.The balance position-limit mechanism that the NAL laboratory provides has adopted the version of limited block, not only physical dimension is big for this spacing form, simultaneously because assembling process itself will be brought certain error inevitably, and the spacing clearance t of this sum of errors is to be on the same magnitude, and it will be very difficult therefore accurately adjusting bidirectionally limited gap.
The purpose of this utility model is to provide formula six component strain balances in a kind of new type of high sensitivity.This balance can be measured six kinds of sharing parts of the load simultaneously, comprising: normal force Y, pitching moment Mz, side force Z, yawing My, axial force Q and rolling moment Mx, and especially can the high-sensitivity measurement rolling moment; Whole balance longitudinal load-bearing ability is strong; Spacing gap adjustment is accurate.
The utility model scheme is achieved in that employing " dual crossing is around bent resilient pivot " organization plan, and two couple who arranges the rolling moment unit during totally four cross-elasticity beams, outside will vertical two being arranged in, two of side direction are arranged in the inboard; Simultaneously two rectangular cross section beams are arranged in the two ends of cross-elasticity beam; Balance adopts one-piece construction, promptly directly cuts out four elastic beams on inner shaft element, and is nested with the overcoat element, and inner shaft element and elastic beam and the welding of overcoat element are molten as a whole admittedly; The balance position-limit mechanism adopts spacer pin.
The utility model has improved the longitudinal load-bearing ability of balance owing to adopted vertical two to be arranged in the outside and two of side direction are arranged in inboard structure, has improved the measurement sensitivity of rolling moment unit; Because inner shaft element and elastic beam and overcoat element adopt one-piece construction, eliminated the internal stress of elastic beam fully, improved the integral rigidity of balance, reduced non-linear interference; Owing to adopted spacer pin, and the hole on inner shaft element and the overcoat element is that postwelding is one-time formed, therefore simplified position limiting structure greatly, and periphery is spacing accurate, and replaceable different spacer pin regulated spacing gap easily; Owing to can record six components simultaneously, improve the balance effective utilization, and can reduce experimentation cost.
Fig. 1 is a NAL laboratory balance structural representation.
Fig. 2 is the utility model structural representation.
The contrast accompanying drawing is further set forth the utility model below.
Interior formula six component strain balances as shown in Figure 2 are made up of inner shaft element and elastic beam and overcoat element etc.At first on inner shaft element 1, cut out two groups of totally four cross-elasticity beams, i.e. two longitudinal elasticity beams 2 and two lateral elasticity beams 3, make the part outside the elastic beam remain cylindrical solid simultaneously, the outer end of elastic beam will exceed the cylindrical outer surface of inner shaft element, secondly on overcoat element 4 bore hole to contain inner shaft element and elastic beam, and reservation certain deformation gap, get two grooves in this part with electric spark then, the axial and circumferential position of groove should be corresponding with two groups of elastic beams on the inner shaft element.The elastic beam that exceeds the inner shaft element cylindrical outer surface is nested with the groove on the overcoat element, and use electron beam welding, the remainder of groove is filled up welding again with panel, make the interior axle of balance molten as a whole fully admittedly, can eliminate internal stress on the elastic beam fully through vacuum aging again with the overcoat element.Welded the back and on inner shaft element and overcoat element, once got limit pin hole, concentricity that like this can the strict guarantee hole.Then spacer pin 5 cars are become step and with the assembling of this hole, the centre of pin and inner shaft element are transition fit, the hole on two ends and the overcoat element forms peripheral spacing gap; So far just finish of the processing and the assembling of two component force elements (Mx and Q) dual crossing around bent resilient pivot structure.Then, at rectangular cross section beam 6 of each cutting of these structure two ends, be used to measure Mz, Y, four components of My, Z.Correspondingly, the correspondence position on interior axle and overcoat element is offered the paster window and is pasted foil gauge, and its paste position is the balance near axis near the root of two groups of elastic beams all.Planted agent's formula six COMPONENT BALANCE organization plans have so just been finished.
Claims (2)
1. formula six component strain balances in a kind, constitute by inner shaft element, overcoat element, elastic beam and position-limit mechanism, adopt " dual crossing is around bent resilient pivot " organization plan, it is characterized in that, balance is an one-piece construction, promptly directly cut out four elastic beams on inner shaft element, nested with the overcoat element, inner shaft element and elastic beam and the welding of overcoat element are molten as a whole admittedly; Four cross-elasticity beams are to distribute like this: vertical two are arranged in the outside, and two of side direction are arranged in the inboard; Two rectangular cross section beams are arranged in the two ends of cross-elasticity beam.
2. by the described six component strain balances of claim 1, it is characterized in that position-limit mechanism is a spacer pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95212302 CN2235615Y (en) | 1995-06-02 | 1995-06-02 | Internal six-component strain balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95212302 CN2235615Y (en) | 1995-06-02 | 1995-06-02 | Internal six-component strain balance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2235615Y true CN2235615Y (en) | 1996-09-18 |
Family
ID=33862533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95212302 Expired - Fee Related CN2235615Y (en) | 1995-06-02 | 1995-06-02 | Internal six-component strain balance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2235615Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1077685C (en) * | 1997-02-03 | 2002-01-09 | 中国航空工业总公司第六二六研究所 | Quadruple cross-position support for semi-model wind channel test |
| CN102062630A (en) * | 2010-12-06 | 2011-05-18 | 中国航天空气动力技术研究院 | Floating frame type axial force strain balance |
| CN101726401B (en) * | 2009-12-09 | 2011-10-26 | 中国航空工业第一集团公司沈阳空气动力研究所 | Scale measuring device for pitching dynamic derivative experiment |
| CN106092498A (en) * | 2016-08-19 | 2016-11-09 | 大连理工大学 | A kind of five component piezoelectric types " double balance " |
| CN106768791A (en) * | 2016-11-17 | 2017-05-31 | 中国科学院力学研究所 | A kind of micro wind-tunnel balance |
| CN108195554A (en) * | 2018-01-16 | 2018-06-22 | 中国空气动力研究与发展中心超高速空气动力研究所 | Six component optical fiber aerodynamics force measurement balances and output signal combined method |
| CN108398230A (en) * | 2017-12-29 | 2018-08-14 | 中国航天空气动力技术研究院 | A kind of six COMPONENT BALANCE of chip applied to aircraft component dynamometry |
| CN113984327A (en) * | 2021-10-18 | 2022-01-28 | 中国航空工业集团公司北京长城计量测试技术研究所 | Flexible part with cross structure and strain balance |
-
1995
- 1995-06-02 CN CN 95212302 patent/CN2235615Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1077685C (en) * | 1997-02-03 | 2002-01-09 | 中国航空工业总公司第六二六研究所 | Quadruple cross-position support for semi-model wind channel test |
| CN101726401B (en) * | 2009-12-09 | 2011-10-26 | 中国航空工业第一集团公司沈阳空气动力研究所 | Scale measuring device for pitching dynamic derivative experiment |
| CN102062630A (en) * | 2010-12-06 | 2011-05-18 | 中国航天空气动力技术研究院 | Floating frame type axial force strain balance |
| CN106092498A (en) * | 2016-08-19 | 2016-11-09 | 大连理工大学 | A kind of five component piezoelectric types " double balance " |
| CN106768791A (en) * | 2016-11-17 | 2017-05-31 | 中国科学院力学研究所 | A kind of micro wind-tunnel balance |
| CN106768791B (en) * | 2016-11-17 | 2019-04-16 | 中国科学院力学研究所 | A kind of micro wind-tunnel balance |
| CN108398230A (en) * | 2017-12-29 | 2018-08-14 | 中国航天空气动力技术研究院 | A kind of six COMPONENT BALANCE of chip applied to aircraft component dynamometry |
| CN108195554A (en) * | 2018-01-16 | 2018-06-22 | 中国空气动力研究与发展中心超高速空气动力研究所 | Six component optical fiber aerodynamics force measurement balances and output signal combined method |
| CN108195554B (en) * | 2018-01-16 | 2023-08-08 | 中国空气动力研究与发展中心超高速空气动力研究所 | Six-component optical fiber aerodynamic force measurement balance and output signal combination method |
| CN113984327A (en) * | 2021-10-18 | 2022-01-28 | 中国航空工业集团公司北京长城计量测试技术研究所 | Flexible part with cross structure and strain balance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |