CN101016926A - Undercarriage bumper having inner flow regulating valve - Google Patents
Undercarriage bumper having inner flow regulating valve Download PDFInfo
- Publication number
- CN101016926A CN101016926A CN 200710020001 CN200710020001A CN101016926A CN 101016926 A CN101016926 A CN 101016926A CN 200710020001 CN200710020001 CN 200710020001 CN 200710020001 A CN200710020001 A CN 200710020001A CN 101016926 A CN101016926 A CN 101016926A
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- Prior art keywords
- throttle valve
- piston rod
- throttle
- spring
- supporting base
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 230000001105 regulatory effect Effects 0.000 title 1
- 239000000872 buffer Substances 0.000 claims abstract description 35
- 238000007667 floating Methods 0.000 claims abstract description 13
- 239000012530 fluid Substances 0.000 claims description 41
- 235000014676 Phragmites communis Nutrition 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 4
- 238000013016 damping Methods 0.000 description 18
- 230000003139 buffering effect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010992 reflux Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Fluid-Damping Devices (AREA)
Abstract
The invention relates to a plane landing gear buffer with an internal throttle valve, wherein the buffer comprises an outer cylinder (15) and a piston rod (1) to form an external structure, a floating piston (4) in the chamber of the piston rod (1) to form an air chamber and an oil chamber, a support base (6), a throttle valve base (7), a disc spring (8) and a spherical valve element (9) to form a spring control throttle valve. The invention is characterized in that the chamber of the throttle valve comprises an internal throttle valve formed by a spring (10) and a throttle hole cap (11). The invention has improved low-speed buffer function, to avoid load sharp at low speed and make the throttle valve absorb more reverse strike energy.
Description
1. technical field
The invention belongs to a kind of undercarriage buffer.
2. technical background
Domestic and international existing spring control throttle valve technology is used widely, usually spring is controlled throttle valve and is used for the undercarriage buffer, to improve the landing shock-absorbing capacity of undercarriage.Spring control throttle valve shown in accompanying drawing three in the buffer promptly is a kind of structural type of existing spring control throttle valve.Here will utilize the work of buffer shown in the accompanying drawing three that the working principle of this spring control throttle valve is described.
For buffer shown in the accompanying drawing 3, when piston rod (1) when being subjected to impulsive load, the fluid pressurized flows to low pressure one side by throttle valve in the oil pocket (12), and promotes floating piston (4) compressed air cell gas, realizes the compression buffering course; Reach after the maximum compression stroke, the effect of the pneumatic spring potential energy that buffer is stored enters the resilience buffering course, and floating piston this moment (4) promotes fluid and refluxes via throttle valve.In whole process, buffer is flowed through fluid damping force that throttle valve produces to realize absorbing the function of dissipation landing shock energy by fluid.
The working principle of this spring control throttle valve is when piston rod (1) when being subjected to low velocity impact in this process, the fluid damping force that produces is less, the fluid damping force that sphere core (9) is subjected to is less than or equal to the support force of an official document or note reed (8), close in slit between sphere core (9) and throttle valve seat (7), and fluid passes through sphere core (9) center oil orifice flow to low pressure one side; And when piston rod (1) when being subjected to high speed impact, the fluid damping force that produces is bigger, make fluid damping force that sphere core (9) is subjected to support force greater than an official document or note reed (8), sphere core (9) is backed down by fluid, and fluid flows to low pressure one side by the gap between sphere core (9) center oilhole and sphere core (9) and throttle valve seat (7); Close in gap when the buffer resilience between sphere core (9) and throttle valve seat (7), and fluid can only pass through sphere core (9) center oilhole and reflux.
But during owing to this spring control throttle valve work, the center oilhole of its sphere core is bigger, center oilhole nodal section area is also immutable, the buffer buffers process is mild inadequately when therefore having produced low velocity impact, and throttle valve absorbs the less and not high shortcoming of buffering efficient of ballistic work amount when low velocity impact and resilience.
3. summary of the invention
Purpose of the present invention: the buffer buffers process was mild inadequately when there was low velocity impact in existing spring control throttle valve, and throttle valve absorbs the less and not high shortcoming of buffering efficient of ballistic work amount when low velocity impact and resilience.The present invention is by throttle valve in increasing on existing spring control throttle valve basis, and the buffer buffers process is milder when making low velocity impact, the ballistic work amount of throttle valve buffering efficient and absorption thereof when increasing low velocity impact and resilience.
Technological scheme of the present invention: the present invention is a kind of undercarriage buffer with interior throttle valve, comprise that urceolus is sleeved on piston rod head, this piston rod head outer round surface contacts with the urceolus inner round wall by seal washer, constitute the buffer external structure, floating piston places piston rod cavity, form air cavity and fluid chamber, described floating piston outer round surface contacts with the piston rod inner round wall by seal washer, be provided with the limited ring of restriction floating piston the sphere of activities at the piston rod cavity middle part, by supporting base, throttle valve seat, the spring control throttle valve that an official document or note reed and sphere core are formed, this spring control throttle valve is fixed on supporting base and throttle valve seat on the annular steps of piston rod head inner chamber by throttle valve retaining thread ring, it wherein is the end with the supporting base, with an official document or note reed sphere core is supported on the supporting base bottom, with the throttle valve seat is lid, make sphere core top sphere be close to throttle valve seat free intrados is arranged, it is characterized in that: described spring control throttle valve also comprises an interior throttle valve, should form by spring and throttle orifice cap by interior throttle valve, wherein the throttle orifice cap is packed in the above-mentioned sphere core inner chamber, spring places the inner chamber of throttle orifice cap, the throttle orifice cap is supported on the supporting base, and makes the outer inclined-plane, top of throttle orifice cap be close to the oilhole internal orifice of above-mentioned sphere core.
Beneficial effect of the present invention: 1, increase the fluid damping force of throttle valve when buffer bears low velocity impact, and interior throttle valve spring rigidity is less, when striking velocity was big slightly, interior throttle valve was promptly opened fully, did not influence the fluid damping force of buffer when bearing high speed impact; The load hump of buffer when 2, having avoided low velocity impact makes buffer low velocity impact buffering course milder; Fluid withdrawing oil hole area when 3, having reduced the buffer resilience can absorb more reverse stroke merit amount, slows down damper leg and stretches, to improve the efficiency factor of damper leg.
4. description of drawings
The undercarriage buffer structure schematic representation of throttle valve in accompanying drawing 1 band
The spring control throttle valve structural representation of throttle valve in accompanying drawing 2 bands
Label title among Fig. 1 and Fig. 2: 1, piston rod, 2, air cavity, 3, seal washer, 4, floating piston, 5, limited ring, 6, supporting base, 7, throttle valve seat, 8, an official document or note reed, 9, sphere core, 10, spring, 11, throttle orifice cap, 12, throttle valve retaining thread ring, 13, seal washer, 14, fluid chamber, 15, urceolus.
Accompanying drawing 3 existing spring control throttle valve and application buffer structural representations thereof
Number in the figure title 1, piston rod, 2, air cavity, 3, seal washer, 4, floating piston, 5, limited ring, 6, supporting base, 7, throttle valve seat, 8, an official document or note reed, 9, sphere core, 10, throttle valve retaining thread ring, 11, seal washer, 12, the fluid chamber, 13, urceolus.
5. embodiment
Technological scheme of the present invention: the undercarriage buffer that is throttle valve in the band of the present invention is as shown in Figure 1 formed schematic representation, and Fig. 2 is the structural representation of the spring control throttle valve of throttle valve in the band.As shown in Figure 2, with supporting base 6 is the end, with four an official document or note reeds 8 sphere core 9 is supported on the supporting base 6, with spring 10 throttle orifice cap 11 is supported on the supporting base 6 simultaneously, and makes its inclined-plane, top be close to sphere core 9 oilhole internal orifices, constitute an interior throttle structure, with throttle valve seat 7 is lid, and make sphere core 9 top spheres be close to throttle valve seat 7 oilhole intrados, and constitute another throttle structure, so just constituted the spring control throttle valve of an interior throttle valve of band.Can supporting base 6 and throttle valve seat 7 be fixed on the extraneous supporter with fixing device during use.
Here will utilize the working principle of the spring control throttle valve of throttle valve in the work oolemma of buffer shown in the accompanying drawing 1.
For buffer shown in the accompanying drawing 1, when piston rod 1 was subjected to impulsive load, the fluid pressurized flowed to low pressure one side by throttle valve in the oil pocket 14, and promoted floating piston 4 compressed air cell gases, realized the compression buffering course; Reach after the maximum compression stroke, the effect of the pneumatic spring potential energy that buffer is stored enters the resilience buffering course, and this moment, floating piston 4 promotion fluid refluxed via throttle valve.In whole process, buffer is flowed through fluid damping force that throttle valve produces to realize absorbing the function of dissipation landing shock energy by fluid.
The working principle of the spring control throttle valve of the interior throttle valve of band is in this process:
(a), when piston rod 1 is subjected to lower low velocity impact, the fluid damping force that produces is less, the fluid damping force that sphere core 9 is subjected to is less than or equal to the support force of an official document or note reed 8, close in the slit that sphere core 9 and throttle valve seat are 7, the fluid damping force that throttle orifice cap 11 is subjected to also is less than or equal to the support force of spring 10, and fluid passes through throttle orifice cap 11 center oil orifice flows to low pressure one side;
(b), when piston rod 1 is subjected to higher low velocity impact, the fluid damping force that produces increases to some extent, but still it is less, the fluid damping force that sphere core 9 is subjected to is less than or equal to the support force of an official document or note reed 8, close in the slit that sphere core (9) and throttle valve seat are 7, but the fluid damping force that throttle orifice cap 11 is subjected to is greater than the support force of spring 10, and throttle orifice cap 11 is backed down by fluid, and fluid flows to low pressure one side by the gap of throttle orifice cap 11 center oilholes and throttle orifice cap 11 and sphere core 9;
(c) and when piston rod 1 is subjected to high speed impact, the fluid damping force that produces is bigger, make fluid damping force that sphere core 9 is subjected to support force greater than an official document or note reed 8, sphere core 9 is backed down by fluid, still greater than the support force of spring 10, throttle orifice cap 11 is also backed down by fluid the fluid damping force that throttle orifice cap 11 is subjected to, and fluid flows to low pressure one side by throttle orifice cap 11 center oilholes, throttle orifice cap 11 with the gap of sphere core 9 and the gap of sphere core 9 and throttle valve seat 7;
(d), all close in the gap of 7 of the gap of throttle orifice cap 11 and sphere core 9 and sphere core 9 and throttle valve seats when the buffer resilience, fluid only refluxes by throttle orifice cap 11 center oilholes;
(e), in whole buffering and springback process, absorb dissipation landing shock energy by the fluid fluid damping force that throttle valve produces of flowing through.
Claims (1)
1, a kind of undercarriage buffer with interior throttle valve, comprise that urceolus (15) is sleeved on piston rod (1) head, this piston rod (1) head outer round surface contacts with urceolus (15) inner round wall by seal washer (13), constitute the buffer external structure, floating piston (4) places piston rod (1) inner chamber, form air cavity (2) and fluid chamber (14), described floating piston (4) outer round surface contacts with piston rod (1) inner round wall by seal washer (3), be provided with the limited ring (5) of restriction floating piston (4) the sphere of activities at piston rod (1) inner chamber middle part, by supporting base (6), throttle valve seat (7), the spring control throttle valve that an official document or note reed (8) and sphere core (9) are formed, this spring control throttle valve is fixed on supporting base (6) and throttle valve seat (7) on the annular steps of piston rod (1) head cavity by throttle valve retaining thread ring (12), it is the end wherein with supporting base (6), with an official document or note reed (8) sphere core (9) is supported on supporting base (6) bottom, with the throttle valve seat is lid, make sphere core (9) top sphere be close to throttle valve seat (7) free intrados is arranged, it is characterized in that: described spring control throttle valve also comprises an interior throttle valve, should form by spring (10) and throttle orifice cap (11) by interior throttle valve, wherein throttle orifice cap (11) is packed in above-mentioned sphere core (9) inner chamber, spring (10) places the inner chamber of throttle orifice cap (11), throttle orifice cap (11) is supported on the supporting base (6), and makes inclined-plane, the outer top of throttle orifice cap (11) be close to the oilhole internal orifice of above-mentioned sphere core (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100200012A CN100430622C (en) | 2007-02-06 | 2007-02-06 | Undercarriage bumper having inner flow regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100200012A CN100430622C (en) | 2007-02-06 | 2007-02-06 | Undercarriage bumper having inner flow regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101016926A true CN101016926A (en) | 2007-08-15 |
| CN100430622C CN100430622C (en) | 2008-11-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100200012A Expired - Fee Related CN100430622C (en) | 2007-02-06 | 2007-02-06 | Undercarriage bumper having inner flow regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100430622C (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780841A (en) * | 2010-03-10 | 2010-07-21 | 南京航空航天大学 | Landing leg pressing, unfolding and locking device of lander |
| CN102060106A (en) * | 2010-12-21 | 2011-05-18 | 南京航空航天大学 | Buffer landing leg for planet detector |
| CN102094926A (en) * | 2010-12-14 | 2011-06-15 | 南京航空航天大学 | Potential energy storage type protruding undercarriage buffer |
| CN101649879B (en) * | 2009-09-25 | 2011-06-22 | 中国北方车辆研究所 | Damper valve |
| CN102120498A (en) * | 2011-02-24 | 2011-07-13 | 哈尔滨工业大学 | Electromagnetic damping buffer |
| CN102198866A (en) * | 2011-04-22 | 2011-09-28 | 南京航空航天大学 | Telescopic landing leg expanding mechanism for planetary probe |
| CN102537185A (en) * | 2011-12-28 | 2012-07-04 | 东莞理工学院城市学院 | Intelligent automotive shock absorber |
| CN103661965A (en) * | 2013-11-22 | 2014-03-26 | 上海宇航***工程研究所 | Built-in extension-type landing buffering mechanism |
| CN103883664A (en) * | 2012-12-21 | 2014-06-25 | 中国直升机设计研究所 | Throttle valve for helicopter |
| CN105059532A (en) * | 2015-07-16 | 2015-11-18 | 张萍 | Landing gear of unmanned aircraft |
| CN105909896A (en) * | 2016-06-08 | 2016-08-31 | 江苏腾旋科技股份有限公司 | Separable rotating joint |
| CN106621391A (en) * | 2015-10-29 | 2017-05-10 | 马铿钧 | Model airplane taking-off and landing system with buffer effect |
| CN106763424A (en) * | 2016-12-02 | 2017-05-31 | 中国运载火箭技术研究院 | A kind of undercarriage buffer method for designing for becoming oilhole based on oil back chamber |
| CN107237855A (en) * | 2017-06-28 | 2017-10-10 | 中车青岛四方车辆研究所有限公司 | Piston unit and oil-pressure damper |
| WO2018214102A1 (en) * | 2017-05-25 | 2018-11-29 | 深圳配天智能技术研究院有限公司 | Vibration suppression device and robot |
| CN112196932A (en) * | 2020-09-25 | 2021-01-08 | 中国直升机设计研究所 | Throttle valve for buffer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2382894Y (en) * | 1999-07-02 | 2000-06-14 | 元渝机械(深圳)有限公司 | Damper |
| DE20014069U1 (en) * | 2000-08-16 | 2000-12-21 | Fu Luong Hi Tech Co | Hydropneumatic shock absorber for a two-wheeler |
| ATE394253T1 (en) * | 2003-08-08 | 2008-05-15 | Rheinmetall Landsysteme Gmbh | HYDROP ELEMENT |
| CN2835699Y (en) * | 2004-10-22 | 2006-11-08 | 大连万春聚氨酯护舷科技发展有限公司 | Hydro-pneumatic buffer |
-
2007
- 2007-02-06 CN CNB2007100200012A patent/CN100430622C/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101649879B (en) * | 2009-09-25 | 2011-06-22 | 中国北方车辆研究所 | Damper valve |
| CN101780841A (en) * | 2010-03-10 | 2010-07-21 | 南京航空航天大学 | Landing leg pressing, unfolding and locking device of lander |
| CN101780841B (en) * | 2010-03-10 | 2013-07-03 | 南京航空航天大学 | Landing leg pressing, unfolding and locking device of lander |
| CN102094926A (en) * | 2010-12-14 | 2011-06-15 | 南京航空航天大学 | Potential energy storage type protruding undercarriage buffer |
| CN102060106A (en) * | 2010-12-21 | 2011-05-18 | 南京航空航天大学 | Buffer landing leg for planet detector |
| CN102120498A (en) * | 2011-02-24 | 2011-07-13 | 哈尔滨工业大学 | Electromagnetic damping buffer |
| CN102198866A (en) * | 2011-04-22 | 2011-09-28 | 南京航空航天大学 | Telescopic landing leg expanding mechanism for planetary probe |
| CN102537185A (en) * | 2011-12-28 | 2012-07-04 | 东莞理工学院城市学院 | Intelligent automotive shock absorber |
| CN103883664A (en) * | 2012-12-21 | 2014-06-25 | 中国直升机设计研究所 | Throttle valve for helicopter |
| CN103661965A (en) * | 2013-11-22 | 2014-03-26 | 上海宇航***工程研究所 | Built-in extension-type landing buffering mechanism |
| CN105059532A (en) * | 2015-07-16 | 2015-11-18 | 张萍 | Landing gear of unmanned aircraft |
| CN106621391A (en) * | 2015-10-29 | 2017-05-10 | 马铿钧 | Model airplane taking-off and landing system with buffer effect |
| CN105909896A (en) * | 2016-06-08 | 2016-08-31 | 江苏腾旋科技股份有限公司 | Separable rotating joint |
| CN105909896B (en) * | 2016-06-08 | 2018-08-07 | 郎溪腾旋科技有限公司 | A kind of disengagable formula rotary joint |
| CN106763424A (en) * | 2016-12-02 | 2017-05-31 | 中国运载火箭技术研究院 | A kind of undercarriage buffer method for designing for becoming oilhole based on oil back chamber |
| WO2018214102A1 (en) * | 2017-05-25 | 2018-11-29 | 深圳配天智能技术研究院有限公司 | Vibration suppression device and robot |
| CN109312805A (en) * | 2017-05-25 | 2019-02-05 | 深圳配天智能技术研究院有限公司 | Equipment for inhibiting of vibration and robot |
| CN109312805B (en) * | 2017-05-25 | 2021-04-02 | 深圳配天智能技术研究院有限公司 | Vibration suppression device and robot |
| CN107237855A (en) * | 2017-06-28 | 2017-10-10 | 中车青岛四方车辆研究所有限公司 | Piston unit and oil-pressure damper |
| CN112196932A (en) * | 2020-09-25 | 2021-01-08 | 中国直升机设计研究所 | Throttle valve for buffer |
| CN112196932B (en) * | 2020-09-25 | 2022-04-22 | 中国直升机设计研究所 | Throttle valve for buffer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100430622C (en) | 2008-11-05 |
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Granted publication date: 20081105 Termination date: 20160206 |