CN105699013A - Aircraft gravity center position detecting device and method - Google Patents
Aircraft gravity center position detecting device and method Download PDFInfo
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- CN105699013A CN105699013A CN201610209369.2A CN201610209369A CN105699013A CN 105699013 A CN105699013 A CN 105699013A CN 201610209369 A CN201610209369 A CN 201610209369A CN 105699013 A CN105699013 A CN 105699013A
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- travelling
- aircraft
- steel ball
- lifting platform
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/12—Static balancing; Determining position of centre of gravity
- G01M1/122—Determining position of centre of gravity
- G01M1/125—Determining position of centre of gravity of aircraft
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Abstract
The invention discloses an aircraft gravity center position detecting device. The device includes a movable plate, a lifting table and a weight measuring device. The movable plate is fixed on the top of the lifting table and moves up and down along with the lifting table. The movable plate is provided with at least one slide mechanism used for supporting a surface measurement point of an aircraft. The slide mechanism has horizontal slide freedom even when clinging to the measurement point. The weight measuring device is connected with the lifting table and is used for measuring weight loaded on the lifting table. A plurality of said devices can be used in combination according to the number of the measurement points. When using, the movable plate is enabled to cling to the measurement point of the aircraft through the lifting table, then the weight measuring device is utilized for measuring weight borne by the movable plate. The device provided by the invention can implement the object weight measuring and gravity center detecting task easily, removes influence caused by side slide extrusion and friction due to a condition in the prior art that multiple points cannot be utilized at the same time during a weighing process, so that the weighing precision is improved substantially and a solid foundation is laid for accurate trim.
Description
Technical background
The present invention relates to the mensuration of object position of centre of gravity, particularly to a kind of aircraft centre of gravity position measuring device and method thereof。
Background technology
Center of gravity trim is the important process before aircraft。The position of centre of gravity of airborne vehicle is extremely important to stability and the safety of its flight。For the airborne vehicle adopting rocket assist to launch, rocket assist process is more had critical impact by its position of centre of gravity。
Determine the position of centre of gravity of airborne vehicle, then after needing multimetering, then be calculated。Multimetering, then owing to cannot ensure multiple spot upper title simultaneously, can cause the measurement point sideslip extruding of airborne vehicle and the frictional force that generation is bigger, have a strong impact on certainty of measurement。Traditional much center of gravity measurement equipment, the precision that cost is low is poor；And the cost height that precision is higher, it is achieved complicated。Patent of invention if application number is CN201410687125.6 discloses a kind of aircraft weight and center of gravity Smart Instrument for Measuring, including front wheel electronic scale, main wheel electronic scale, hoistable platform, laser ranging unit, aobvious control unit, wheel electronic scale and main wheel electronic scale and laser ranging cell data carries out weight and then center of gravity calculation shows before aobvious control unit collection。Although this device is capable of center of gravity measurement, but it involves great expense, and is unfavorable for promoting the use of。
Summary of the invention
It is an object of the invention to solve problems of the prior art, and a kind of aircraft centre of gravity position measuring device is provided。
For achieving the above object, the technical solution used in the present invention is as follows:
Aircraft centre of gravity position measuring device, including travelling dish, lifting platform and Weight measurement device, described travelling dish is fixed on lifting platform top, moves up and down with lifting platform；Having at least a slide mechanism measuring point for supporting aircraft surface in travelling dish, this mechanism still has horizontal free sliding degree when being adjacent to measurement point。Described Weight measurement device is connected with lifting platform, for the weight supported on lifting platform is measured。
Some covering devices, according to measure dot number, are supported the use by said apparatus together。During use, making travelling dish be close to airborne vehicle by lifting platform and measure point, the gravity that travelling dish is carried by recycling Weight measurement device measures。Wherein travelling dish is critical component, is used for supporting airborne vehicle and measures point, and slide mechanism major function thereon is to eliminate impact of breakking away, and eliminates frictional force, improves certainty of measurement。
As preferably, described travelling dish includes base, steel ball fixed disk, steel ball, travelling plate and upper cover plate, and described steel ball fixed disk is fixed in base, and steel ball fixed disk is provided with several circular holes placing steel ball, and steel ball can rotate in circular hole。Travelling plate is positioned over above steel ball, and spacing in the direction being perpendicular to steel ball fixed disk by upper cover plate, makes travelling plate be only capable of sliding on the surface that different steel ball fixed points is formed。Travelling plate top is higher than upper cover plate。After travelling plate lateral force, can translate to Impact direction, eliminate the sideslip measuring point and compress and rub against power。
As preferably, described travelling plate body having a bulge-structure, bulge-structure top is higher than upper cover plate, and the space distance between upper cover plate and travelling plate arranges should meet when travelling plate slides into extreme position and do not come off。
As preferably, described lifting platform is fixed on Weight measurement device top, and is supported by installing rack, is provided with the adjusting base for regulating level height bottom installing rack。
Another object of the present invention is to provide a kind of aircraft centre of gravity position measurement method using described device, step is as follows:
Described aircraft centre of gravity position measuring device is placed on below the measurement point of airborne vehicle, and makes high accuracy claim to be in level；Slowly regulate lifting platform, rise airborne vehicle so that it is depart from airborne vehicle rack and keep unsettled；Utilize horizontal laser light instrument correction aircraft states, coordinate lifting platform, make airborne vehicle be in level；In adjustment process, utilize travelling dish to make described slide mechanism along with measuring some level slip, eliminate break away extruding and frictional force；When airborne vehicle is in level, read the reading that high accuracy claims；After completing the reading to different measuring point, determine aircraft centre of gravity position according to position of centre of gravity computational methods。
Compared with prior art, present invention have the advantage that
The present invention can realize the check weighing heart task of weighing of object comparatively easily, it is achieved less costly, and step is easy, and the time is short, and efficiency is high。Which solves when weighing owing to multiple spot upper title simultaneously cannot be ensured, the sideslip produced compresses and rubs against the impact of power, substantially increase weighing precision especially, accurate trim is provided solid foundation, can be applicable to unmanned plane and launch or other vehicle launch fields。
Accompanying drawing explanation
Fig. 1 one aircraft centre of gravity position measuring device structural representation；
Fig. 2 is the structural representation of the travelling dish of the present invention；
In figure: travelling dish 1, lifting platform 2, Weight measurement device 3, installing rack 4, adjusting base 5, base 101, steel ball fixed disk 102, steel ball 103, travelling plate 104 and upper cover plate 105。
Detailed description of the invention
Below in conjunction with drawings and Examples the present invention it is further elaborated and illustrates。In the present invention, the technical characteristic of each embodiment is not under having conflicting premise, all can carry out respective combination。
As it is shown in figure 1, a kind of aircraft centre of gravity position measuring device, the agent structure of this device includes travelling dish 1, lifting platform 2 and Weight measurement device 3。Weight measurement device 3 should select high accuracy scale。Travelling dish 1 is fixed on lifting platform 2 top, moves up and down with lifting platform 2。Weight measurement device 3 is connected with lifting platform 2, for the weight supported on lifting platform 2 is measured。Having at least a slide mechanism measuring point for supporting aircraft surface in travelling dish 1, this mechanism still has horizontal free sliding degree when being adjacent to measurement point。Horizontal free sliding degree herein refers to and can move on parallel with aircraft surface or approximately parallel direction。Thereby, it is possible to the frictional force eliminated under airborne vehicle sideslip squeezed state。
In this detailed description of the invention, as in figure 2 it is shown, travelling dish 1 structure includes base 101, steel ball fixed disk 102, steel ball 103, travelling plate 104 and upper cover plate 105。Base 101 is cylindric in uncovered, and steel ball fixed disk 102 is fixed in base 101。Steel ball fixed disk 102 is provided with the circular hole of multiple rows of placement steel ball 103。The diameter of circular hole is slightly larger than steel ball 103, and steel ball 103 can be freely rotatable in circular hole。Travelling plate 104 is positioned over above steel ball 103, travelling plate 104 smooth surface, and can suitably be coated with lubricating oil；。
Upper cover plate 105, in circular, is fixed on base 101 top, and travelling plate 104 bottom is circular, and top has a protruding disc structure, and bulge-structure top is higher than upper cover plate 105 so that it is can directly contact with aircraft surface。Upper cover plate 105 internal diameter is more than protruding disc structure but less than the external diameter of travelling plate 104 bottom。Thus, the space distance between upper cover plate 105 and travelling plate 104 can make travelling plate 104 slide into extreme position (disc structure is close with upper cover plate edge) time not come off。By spacing on the direction being perpendicular to steel ball fixed disk 102 of upper cover plate 105, travelling plate 104 is made to be only capable of sliding on the surface that different steel ball 103 fixed points is formed。
The structure of above-mentioned travelling dish 1 is only a kind of optimal way being capable of, and it will be appreciated by those skilled in the art that all the other set-up modes also are able to realize this function。
In this detailed description of the invention, easy to adjust in order to install, Weight measurement device 3 is fixed on bottom lifting platform 2, and supported by installing rack 4, it is provided with the adjusting base 5 for regulating level height bottom installing rack 4, by up-down adjustment, regulates the level that high accuracy claims 3。
Based on said apparatus, using the aircraft centre of gravity position measurement method of described device, step is as follows:
Below the measurement point of different airborne vehicles, place an aircraft centre of gravity position measuring device respectively, and make high accuracy claim 3 to be in level；Slowly regulate lifting platform 2, rise airborne vehicle so that it is depart from airborne vehicle rack and keep unsettled；Utilize horizontal laser light instrument correction aircraft states, coordinate lifting platform 2, make airborne vehicle be in level；In adjustment process, utilize travelling dish 1 to make slide mechanism along with measuring some level slip, eliminate break away extruding and frictional force；When airborne vehicle is in level, read the reading that high accuracy claims 3；After completing the reading to different measuring point, determine aircraft centre of gravity position according to position of centre of gravity computational methods。
Embodiment described above is the one preferably scheme of the present invention, and so it is not intended to limiting the invention, the technical scheme that all modes taking equivalent replacement or equivalent transformation obtain, and all falls within protection scope of the present invention。
Claims (5)
1. an aircraft centre of gravity position measuring device, it is characterized in that, including travelling dish (1), lifting platform (2) and Weight measurement device (3), described travelling dish (1) is fixed on lifting platform (2) top, moves up and down with lifting platform (2)；Having at least a slide mechanism measuring point for supporting aircraft surface in travelling dish (1), this mechanism still has horizontal free sliding degree when being adjacent to measurement point；Described Weight measurement device (3) is connected with lifting platform (2), for the upper weight supported of lifting platform (2) is measured。
2. aircraft centre of gravity position measuring device as claimed in claim 1, it is characterized in that, described travelling dish (1) includes base (101), steel ball fixed disk (102), steel ball (103), travelling plate (104) and upper cover plate (105), described steel ball fixed disk (102) is fixed in base (101), steel ball fixed disk (102) is provided with several circular holes placing steel ball (103), and steel ball (103) can rotate in circular hole；Travelling plate (104) is positioned over steel ball (103) top, and spacing in the direction being perpendicular to steel ball fixed disk (102) by upper cover plate (105), make travelling plate (104) be only capable of sliding on the surface that different steel ball (103) fixed points is formed；Travelling plate (104) top is higher than upper cover plate (105)。
3. aircraft centre of gravity position measuring device as claimed in claim 2, it is characterized in that, described travelling plate (104) body has a bulge-structure, bulge-structure top is higher than upper cover plate (105), and the space distance between upper cover plate (105) and travelling plate (104) arranges should meet when travelling plate (104) slides into extreme position and do not come off。
4. aircraft centre of gravity position measuring device as claimed in claim 1, it is characterized in that, described lifting platform (2) is fixed on Weight measurement device (3) top, and supported by installing rack (4), installing rack (4) bottom is provided with the adjusting base (5) for regulating level height。
5. the aircraft centre of gravity position measurement method using device as claimed in claim 1, it is characterised in that step is as follows:
Place a described aircraft centre of gravity position measuring device respectively in the some lower section of measuring of different airborne vehicles, make high accuracy claim (3) to be in level by adjusting base (5)；Slowly regulate lifting platform (2), rise airborne vehicle so that it is depart from airborne vehicle rack and keep unsettled；Utilize horizontal laser light instrument correction aircraft states, coordinate lifting platform (2), make airborne vehicle be in level；In adjustment process, utilize travelling dish (1) to make described slide mechanism along with measuring some level slip, eliminate break away extruding and frictional force；When airborne vehicle is in level, reads high accuracy and claim the reading of (3)；After completing the reading to different measuring point, determine aircraft centre of gravity position according to position of centre of gravity computational methods。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610209369.2A CN105699013B (en) | 2016-04-05 | 2016-04-05 | Aircraft centre of gravity position measuring device and its method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610209369.2A CN105699013B (en) | 2016-04-05 | 2016-04-05 | Aircraft centre of gravity position measuring device and its method |
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| Publication Number | Publication Date |
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| CN105699013A true CN105699013A (en) | 2016-06-22 |
| CN105699013B CN105699013B (en) | 2018-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610209369.2A Expired - Fee Related CN105699013B (en) | 2016-04-05 | 2016-04-05 | Aircraft centre of gravity position measuring device and its method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08170935A (en) * | 1994-12-19 | 1996-07-02 | Hitachi Ltd | Device and method for measuring center of gravity of vehicle body |
| JP2007078445A (en) * | 2005-09-13 | 2007-03-29 | Mitsubishi Heavy Ind Ltd | Instrument for measuring mass characteristics |
| RU2463567C1 (en) * | 2011-04-28 | 2012-10-10 | Открытое акционерное общество "Летно-исследовательский институт имени М.М. Громова" | System for determining position of centre of gravity of aircraft before take-off |
| CN202994370U (en) * | 2012-08-30 | 2013-06-12 | 广州汽车集团股份有限公司 | Testing host |
| CN103292957A (en) * | 2013-05-22 | 2013-09-11 | 北京航空航天大学 | Comprehensive mass parameter measuring table of small-size aircraft |
| CN103471693A (en) * | 2013-09-26 | 2013-12-25 | 中航通飞华南飞机工业有限公司 | Automatic universal plane weighing system and control method thereof |
| CN104390687A (en) * | 2014-11-26 | 2015-03-04 | 江西洪都航空工业集团有限责任公司 | Intelligent tester for weight and center of gravity of aircraft |
| CN205719404U (en) * | 2016-04-05 | 2016-11-23 | 浙江大学 | A kind of aircraft centre of gravity position measuring device |
-
2016
- 2016-04-05 CN CN201610209369.2A patent/CN105699013B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08170935A (en) * | 1994-12-19 | 1996-07-02 | Hitachi Ltd | Device and method for measuring center of gravity of vehicle body |
| JP2007078445A (en) * | 2005-09-13 | 2007-03-29 | Mitsubishi Heavy Ind Ltd | Instrument for measuring mass characteristics |
| RU2463567C1 (en) * | 2011-04-28 | 2012-10-10 | Открытое акционерное общество "Летно-исследовательский институт имени М.М. Громова" | System for determining position of centre of gravity of aircraft before take-off |
| CN202994370U (en) * | 2012-08-30 | 2013-06-12 | 广州汽车集团股份有限公司 | Testing host |
| CN103292957A (en) * | 2013-05-22 | 2013-09-11 | 北京航空航天大学 | Comprehensive mass parameter measuring table of small-size aircraft |
| CN103471693A (en) * | 2013-09-26 | 2013-12-25 | 中航通飞华南飞机工业有限公司 | Automatic universal plane weighing system and control method thereof |
| CN104390687A (en) * | 2014-11-26 | 2015-03-04 | 江西洪都航空工业集团有限责任公司 | Intelligent tester for weight and center of gravity of aircraft |
| CN205719404U (en) * | 2016-04-05 | 2016-11-23 | 浙江大学 | A kind of aircraft centre of gravity position measuring device |
Non-Patent Citations (2)
| Title |
|---|
| 姜店祥等: "飞机重量重心测量方法研究", 《教练机》 * |
| 陈平等: "飞行器模型质量特性参数一体化测量装置研究", 《机械科学与技术》 * |
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