CN105129070A - Pressure relief covering cap mechanism with overpressure protection function - Google Patents
Pressure relief covering cap mechanism with overpressure protection function Download PDFInfo
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- CN105129070A CN105129070A CN201510500675.7A CN201510500675A CN105129070A CN 105129070 A CN105129070 A CN 105129070A CN 201510500675 A CN201510500675 A CN 201510500675A CN 105129070 A CN105129070 A CN 105129070A
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- pressure release
- release lid
- lid
- bearing
- pressure relief
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Abstract
A pressure relief covering cap mechanism with overpressure protection function relates to the technical field of aircraft structure design, the pressure relief covering cap is provided with bearings and a double-ear connecting seat, the double-ear connecting seat is in shaft driving connection with a lock mechanism pulling rod, pressure relief covering cap spacer pins are mounted on the bearings, a pressure relief covering cap rotation shaft is mounted on a cabin door structure, and a torsion spring is arranged on the pressure relief covering cap rotation shaft and between the bearings. One end of the shaft of the pressure relief covering cap mechanism is provided with a limit stop block, and the other end of the pressure relief covering cap mechanism is provided with is provided with a double-ear mechanism pulling rod, and double-ear pieces of the double-ear mechanism pulling rod are in shaft driving connection with a control mechanism pulling rod. The pressure relief covering cap mechanism with overpressure protection function converts overpressure operation alarm function into overpressure operation prohibition function, improves cabin door operational operation safety, and is high in device stability, safe and reliable.
Description
Technical field
The present invention relates to technical field of aircraft structure design, in particular to a kind of pressure relief opening lid mechanism with over-voltage protecting function.
Background technology
Hatch door overvoltage is opened and is referred to when hatch door internal pressure is larger, owing to operating the phenomenon of improper opened door.When the hatch door of most aircraft is opened, doorframe region is provided with Warning light, and when Warning light extinguishes, aircraft is within the pressure differential range of safety enabling.But this function instruction warning, instead of prohibiting function.Repeatedly accident shows, even if when Warning light is bright, due to misoperation, appoints the situation so having overvoltage and open the door, and causes operating personal to injure unexpectedly even dead.Due to operating personal error, not seeing the interior overbottom pressure instruction situation that clears the ship, when not reaching the pressure reduction that hatch door opens the door safely, hatch door being opened, because pressure reduction is comparatively large, differential pressure action on hatch door, while hatch door is pushed open rapidly, by operating personal sucking-off.Repeatedly there is similar accident, operating personal in various degree injured can be caused, have impact on the dispatch of aircraft.
The technical matters needing now solution badly how to design a kind of pressure relief opening lid mechanism, and aircraft door can quiescing personnel be opened when overvoltage by this pressure release port cover structure, avoids the potential safety hazard that overvoltage opened door causes.
Summary of the invention
The object of the invention is to solve above-mentioned deficiency of the prior art, provide a kind of pressure relief opening lid mechanism with over-voltage protecting function, to solve the defect existed in prior art.
Object of the present invention is achieved through the following technical solutions: a kind of pressure relief opening lid mechanism with over-voltage protecting function, is characterized in that, comprising:
Pressure release lid, is arranged on hatch door, for regulate in cabin with the pressure reduction outside cabin, pressure relief opening covers and is provided with bearing, ears Connection Block;
Bearing, to be formed in one structure with pressure release lid, bearing to be provided with pressure release lid locating dowel pin mounting hole, pressure release lid mounting hole;
Ears Connection Block, axle has been dynamically connected latch mechanism pull bar;
Pressure release lid locating dowel pin, is installed in the pressure release lid locating dowel pin mounting hole on bearing, and is fixed on bearing by the first bolt group;
The rotating shaft of pressure release lid, is installed in cabin door structure, realizes pressure release lid and cabin door structure axle is dynamically connected by the pressure release lid rotating shaft mounting hole on bearing;
In the rotating shaft of pressure release lid, be provided with torsion spring between bearing, one end of torsion spring is by pressure release lid locating dowel pin and the effect of pressure release lid, and the other end is overlapped in cabin door structure.
, pressure release lid mounting hole internal fixtion is provided with bearing in such scheme preferably, and bearing to be coordinated with the rotating shaft of pressure release lid by bearing and realizes bearing around pressure release lid axis of rotation.
In above-mentioned either a program preferably, one end of pressure release lid rotating shaft is provided with positive stop, the other end is fixedly installed ears mechanism pull bar, one end of positive stop is provided with installation ring, the other end is stuck on pressure release lid locating dowel pin, the rotation of restriction pressure release lid rotating shaft, installation ring is enclosed within the rotating shaft of pressure release lid.
In above-mentioned either a program preferably, on the ears auricle of ears mechanism pull bar, axle has been dynamically connected steering unit pull bar, and ears mechanism pull bar is stuck on pressure release lid locating dowel pin.
In above-mentioned either a program preferably, positive stop, ears mechanism pull bar are fixed in the rotating shaft of pressure release lid respectively by bolt, pad, self lock nut cooperation.
In above-mentioned either a program preferably, pressure release lid locating dowel pin is fixed on bearing by bolt, pad, sleeve, self lock nut cooperation.
In above-mentioned either a program preferably, latch mechanism pull bar and pressure relief opening cover ears Connection Block, ears mechanism pull bar and steering unit pull bar are all dynamically connected by bolt, pad, grooved self lock nut, spring cotter fitted shaft.
The beneficial effect with the pressure relief opening lid mechanism of over-voltage protecting function provided by the present invention is; rational in infrastructure; improve the safety of operation of hatch door operating personal; even if when when hatch door pressure reduction is comparatively large, operating personal is surprisingly opened; the pressure release lid with overvoltage protection also can ensure that hatch door is not opened, and operating personal can not come to harm because of maloperation, ensures the safety of operating personal; device stability is high, safe and reliable.
Accompanying drawing explanation
Fig. 1 is according to the structural representation with a preferred embodiment of the pressure relief opening lid mechanism of over-voltage protecting function of the present invention;
Fig. 2 is according to the structural representation with the pressure release lid open mode embodiment illustrated in fig. 1 of the pressure relief opening lid mechanism of over-voltage protecting function of the present invention;
Fig. 3 is according to the structural representation with the pressure release lid closed condition embodiment illustrated in fig. 1 of the pressure relief opening lid mechanism of over-voltage protecting function of the present invention;
Fig. 4 is the structural representation installed according to the combination embodiment illustrated in fig. 1 with the pressure relief opening lid mechanism of over-voltage protecting function of the present invention.
Reference numeral:
1-pressure release lid, 2-torsion spring, the rotating shaft of 3-pressure release lid, 4-pressure release lid locating dowel pin, 5-steering unit pull bar, 6-ears mechanism pull bar, 7-latch mechanism pull bar, 8-positive stop, 9-bearing.
Detailed description of the invention
In order to understand the pressure relief opening lid mechanism with over-voltage protecting function according to the present invention program better, below in conjunction with accompanying drawing, explanation is further elaborated to a preferred embodiment with the pressure relief opening lid mechanism of over-voltage protecting function of the present invention.
As Figure 1-Figure 4, the pressure relief opening lid mechanism with over-voltage protecting function provided by the invention, comprises pressure release lid 1, is arranged on hatch door, for regulate in cabin with the pressure reduction outside cabin, pressure release lid 1 is provided with bearing 9, ears Connection Block; Bearing 9, to be formed in one structure with pressure release lid 1, bearing 9 to be provided with pressure release lid locating dowel pin mounting hole, pressure release lid mounting hole; Ears Connection Block, axle has been dynamically connected latch mechanism pull bar 7; Pressure release lid locating dowel pin 4, is installed in the pressure release lid locating dowel pin mounting hole on bearing 9, and is fixed on bearing 9 by the first bolt group; Pressure release lid rotating shaft 3, is installed in cabin door structure, realizes pressure release lid 1 be dynamically connected with cabin door structure axle by the pressure release lid rotating shaft mounting hole on bearing 9; In pressure release lid rotating shaft 3, be provided with torsion spring 2 between bearing 9, one end of torsion spring 2 is acted on by pressure release lid locating dowel pin 4 and pressure release lid 1, and the other end is overlapped in cabin door structure.Pressure release lid mounting hole internal fixtion is provided with bearing, and bearing 9 to be coordinated with described pressure release lid rotating shaft 3 by bearing and realizes bearing 9 and rotate around pressure release lid rotating shaft 3.
One end of pressure release lid rotating shaft 3 is provided with positive stop 8, the other end is fixedly installed ears mechanism pull bar 6, and one end of positive stop 8 is provided with installation ring, and the other end is stuck on pressure release lid locating dowel pin 4, the rotation of restriction pressure release lid rotating shaft 3, installation ring is enclosed within described pressure release lid rotating shaft 3.On the ears auricle of ears mechanism pull bar 6, axle has been dynamically connected steering unit pull bar 5, and ears mechanism pull bar 6 is stuck on pressure release lid locating dowel pin 4.Positive stop 8, ears mechanism pull bar 6 are fixed in pressure release lid rotating shaft 3 respectively by bolt, pad, self lock nut cooperation.
Pressure release lid locating dowel pin 4 is fixed on bearing 9 by bolt, pad, sleeve, self lock nut cooperation.Latch mechanism pull bar 7 is all dynamically connected by bolt, pad, grooved self lock nut, spring cotter fitted shaft with steering unit pull bar 5 with the ears Connection Block in pressure release lid 1, ears mechanism pull bar 6.
The pressure relief opening lid mechanism with over-voltage protecting function provided by the invention uses hatch door steering unit pull bar 5 to achieve when main cabin pressure reduction is greater than safe pressure differential with the design of pressure release lid 1 semi-linkage, and steering unit pull bar 5, pressure release lid 1 can not be opened due to pressure effect.Pressure release lid 1 and latch mechanism pull bar 7 are linked, achieve when cabin internal pressure is higher than safe pressure differential, steering unit can not drive latch mechanism, thus realizes the locking of hatch door mechanism, can not open hatch door.
The pressure relief opening lid mechanism with over-voltage protecting function provided by the invention is adopted to lock hatch door.Pressure release lid 1 unlocking condition: pressure release lid 1 and the semi-linkage of hatch door steering unit, steering unit can control pressure release lid 1 and cut out, and steering unit departs from pressure release lid 1.Now, pressure release lid is opened exists the following two kinds situation:
A) in cabin pressure reduction lower than setting safe pressure differential.
Lower than safe pressure differential, (this value can be 0.25psi or is 0.125psi cabin internal pressure, mainly totally open requirement according to hatch door and formulate) time, torsion spring 2 overcomes the moment that cabin pressure reduction is formed in pressure release lid 1, pressure release lid 1 is opened, and now pressure release lid 1 is opened.
B) in cabin pressure reduction higher than setting safe pressure differential.
When cabin internal pressure is higher than setting safe pressure differential, the moment that main cabin pressure reduction is formed in pressure release lid 1 is greater than the unlatching moment that torsion spring 2 drives pressure release lid 1, and pressure release lid 1 cannot be opened, and latch mechanism remains on latched position, and hatch door cannot be opened.
Hatch door unlocking condition: pressure release lid and latch mechanism link.Pressure release lid 1 must be opened lower than safe pressure differential by pressure reduction when opening the door, and ensure that latch mechanism cabin pressure reduction is in when being equal to or less than safe pressure differential, hatch door just can be opened.Latch mechanism is opened thereupon.Promote complete process from unlatching pressure release lid 1 after hatch door solution door bolt, hatch door internal pressure discharges, and now main cabin pressure reduction is zero, and hatch door opens safety.
The moment that the pressure relief opening lid mechanism with over-voltage protecting function provided by the invention uses torsion spring 2 to overcome cabin pressure reduction to be formed in pressure release lid 1 is as follows at the method for calculating with the moment of torsion spring 2 in the pressure relief opening lid mechanism of over-voltage protecting function of the present invention:
Suppose that pressure release lid 1 curved surface area of conter on covering is S, pressure release lid 1 presses the heart to be L1 to the distance of pressure release lid rotating shaft 3, then:
Main cabin pressure reduction covers the moment of torsion of formation at pressure relief opening:
MA=sets safe pressure differential × S × L1.
The moment that latch mechanism produces due to deadweight is MB.Moment M is mainly the resultant moment that latch mechanism gravity produces trend of unblanking.
The moment of torsion of setting torsion spring 2 is MC, then the equilibrium conditions of pressure release lid is: MA=MB+MC
So: MC=MA-MB
The length of corresponding torsion spring 2 can be selected by said method as the case may be to various aircraft, both ensured the safety of operating personal, and overwork intensity can not have been added to operating personal again.
The moment of torsion of the torsion spring 2 under state can be balanced thus, and in this, as the foundation that torsion spring 2 designs.Another basis, still can opened door under ensureing torsion spring 2 failure state, torsion spring is set to torque spring group.When arbitrary torsion spring lost efficacy, torque spring group all can ensure that hatch door reduces differential pressure loading and opens the door, and thus, ensures that hatch door still can be opened.
The alarm function crossing press operation was converted to the prohibiting function of press operation by the pressure relief opening lid mechanism with over-voltage protecting function provided by the invention, realized the safe in operation of operating personal.Use the following object that the pressure relief opening lid mechanism with over-voltage protecting function of the present invention can reach: even if operating personal is because carelessness is when pressure is not larger; attempt district's opened door, the pressure relief opening lid mechanism with over-voltage protecting function of the present invention also can forbid that hatch door is opened.Ensure the safety of operating personal and cabin door structure, impact that airframe structure is subject to breaking property.
More than be described in detail in conjunction with the pressure relief opening lid mechanism specific embodiment with over-voltage protecting function of the present invention; but be not limitation of the present invention; everyly according to technical spirit of the present invention, technical scope of the present invention is all belonged to any simple modification made for any of the above embodiments; also it should be noted that, comprise the combination in any between each part mentioned above according to the category with the pressure relief opening lid mechanism technical scheme of over-voltage protecting function of the present invention.
Claims (7)
1. there is a pressure relief opening lid mechanism for over-voltage protecting function, it is characterized in that, comprising:
Pressure release lid (1), is arranged on hatch door, for regulate in cabin with the pressure reduction outside cabin, pressure release lid (1) is provided with bearing (9), ears Connection Block;
Bearing (9), to be formed in one structure with pressure release lid (1), bearing (9) to be provided with pressure release lid locating dowel pin mounting hole, pressure release lid mounting hole;
Ears Connection Block, axle has been dynamically connected latch mechanism pull bar (7);
Pressure release lid locating dowel pin (4), is installed in the pressure release lid locating dowel pin mounting hole on bearing (9), and is fixed on bearing (9) by bolt group;
Pressure release lid rotating shaft (3), is installed in cabin door structure, realizes pressure release lid (1) be dynamically connected with cabin door structure axle by the pressure release lid rotating shaft mounting hole on bearing (9);
Torsion spring (2) is provided with in pressure release lid rotating shaft (3), between bearing (9), one end of torsion spring (2) is acted on by pressure release lid locating dowel pin (4) and pressure release lid (1), and the other end is overlapped in cabin door structure.
2. there is the pressure relief opening lid mechanism of over-voltage protecting function as claimed in claim 1; it is characterized in that: described pressure release lid mounting hole internal fixtion is provided with bearing, described bearing (9) to be coordinated with described pressure release lid rotating shaft (3) by bearing and realizes described bearing (9) and rotate around described pressure release lid rotating shaft (3).
3. there is the pressure relief opening lid mechanism of over-voltage protecting function as claimed in claim 2; it is characterized in that: one end of described pressure release lid rotating shaft (3) is provided with positive stop (8); the other end is fixedly installed ears mechanism pull bar (6); one end of positive stop (8) is provided with installation ring; the other end is stuck on described pressure release lid locating dowel pin (4); limit the rotation of described pressure release lid rotating shaft (3), installation ring is enclosed within described pressure release lid rotating shaft (3).
4. there is the pressure relief opening lid mechanism of over-voltage protecting function as claimed in claim 2; it is characterized in that: on the ears auricle of ears mechanism pull bar (6), axle has been dynamically connected steering unit pull bar (5), and ears mechanism pull bar (6) is stuck on pressure release lid locating dowel pin (4).
5. there is the pressure relief opening lid mechanism of over-voltage protecting function as claimed in claim 3, it is characterized in that: described positive stop (8), described ears mechanism pull bar (6) are fixed in described pressure release lid rotating shaft (3) respectively by bolt, pad, self lock nut cooperation.
6. there is the pressure relief opening lid mechanism of over-voltage protecting function as claimed in claim 3, it is characterized in that: described pressure release lid locating dowel pin (4) is fixed on bearing (9) by bolt, pad, sleeve, self lock nut cooperation.
7. the pressure relief opening lid mechanism with over-voltage protecting function as described in claim 1 or 3, is characterized in that: latch mechanism pull bar (7) is all dynamically connected by bolt, pad, grooved self lock nut, spring cotter fitted shaft with steering unit pull bar (5) with the ears Connection Block on described pressure release lid (1), described ears mechanism pull bar (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510500675.7A CN105129070A (en) | 2015-08-14 | 2015-08-14 | Pressure relief covering cap mechanism with overpressure protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510500675.7A CN105129070A (en) | 2015-08-14 | 2015-08-14 | Pressure relief covering cap mechanism with overpressure protection function |
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| Publication Number | Publication Date |
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| CN105129070A true CN105129070A (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510500675.7A Pending CN105129070A (en) | 2015-08-14 | 2015-08-14 | Pressure relief covering cap mechanism with overpressure protection function |
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| CN (1) | CN105129070A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106347627A (en) * | 2016-08-30 | 2017-01-25 | 中航沈飞民用飞机有限责任公司 | Multifunctional cabin door ventilation opening device controlled through cam |
| CN106531227A (en) * | 2016-11-25 | 2017-03-22 | 江西洪都航空工业集团有限责任公司 | Quick-dismounting cover bearing no force |
| CN111731434A (en) * | 2020-06-24 | 2020-10-02 | 广船国际有限公司 | Cabin door and positive pressure cabin using same |
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| US5337977A (en) * | 1993-01-29 | 1994-08-16 | The Boeing Company | Vent-latch interlock assembly for an aircraft door |
| US20110049299A1 (en) * | 2009-09-01 | 2011-03-03 | Cessna Aircraft Company | Aircraft Cabin Door Pressure Vent System |
| CN102030101A (en) * | 2010-11-24 | 2011-04-27 | 西安飞机工业（集团）有限责任公司 | Aircraft hatch flexible pressure release mechanism |
| CN202138535U (en) * | 2011-02-17 | 2012-02-08 | 中国航空工业集团公司西安飞机设计研究所 | Outward open type pressurizing cabin door |
| CN104443350A (en) * | 2014-11-13 | 2015-03-25 | 中航沈飞民用飞机有限责任公司 | Pressure locking mechanism of passenger plane cabin door |
| CN204299294U (en) * | 2014-11-17 | 2015-04-29 | 中国航空工业集团公司西安飞机设计研究所 | Handle link gear inside and outside a kind of aircraft door |
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2015
- 2015-08-14 CN CN201510500675.7A patent/CN105129070A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5337977A (en) * | 1993-01-29 | 1994-08-16 | The Boeing Company | Vent-latch interlock assembly for an aircraft door |
| US20110049299A1 (en) * | 2009-09-01 | 2011-03-03 | Cessna Aircraft Company | Aircraft Cabin Door Pressure Vent System |
| CN102030101A (en) * | 2010-11-24 | 2011-04-27 | 西安飞机工业（集团）有限责任公司 | Aircraft hatch flexible pressure release mechanism |
| CN202138535U (en) * | 2011-02-17 | 2012-02-08 | 中国航空工业集团公司西安飞机设计研究所 | Outward open type pressurizing cabin door |
| CN104443350A (en) * | 2014-11-13 | 2015-03-25 | 中航沈飞民用飞机有限责任公司 | Pressure locking mechanism of passenger plane cabin door |
| CN204299294U (en) * | 2014-11-17 | 2015-04-29 | 中国航空工业集团公司西安飞机设计研究所 | Handle link gear inside and outside a kind of aircraft door |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106347627A (en) * | 2016-08-30 | 2017-01-25 | 中航沈飞民用飞机有限责任公司 | Multifunctional cabin door ventilation opening device controlled through cam |
| CN106347627B (en) * | 2016-08-30 | 2018-08-14 | 中航沈飞民用飞机有限责任公司 | A kind of multi-functional hatch door air vent controlled using cam |
| CN106531227A (en) * | 2016-11-25 | 2017-03-22 | 江西洪都航空工业集团有限责任公司 | Quick-dismounting cover bearing no force |
| CN106531227B (en) * | 2016-11-25 | 2019-05-31 | 江西洪都航空工业集团有限责任公司 | A kind of quick-release type non-bearing lid |
| CN111731434A (en) * | 2020-06-24 | 2020-10-02 | 广船国际有限公司 | Cabin door and positive pressure cabin using same |
| CN111731434B (en) * | 2020-06-24 | 2022-02-11 | 广船国际有限公司 | Cabin door and positive pressure cabin using same |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151209 |
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| RJ01 | Rejection of invention patent application after publication |