CN103708023A - Middle-self-locked cabin door supporting rod - Google Patents
Middle-self-locked cabin door supporting rod Download PDFInfo
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- CN103708023A CN103708023A CN201310744666.3A CN201310744666A CN103708023A CN 103708023 A CN103708023 A CN 103708023A CN 201310744666 A CN201310744666 A CN 201310744666A CN 103708023 A CN103708023 A CN 103708023A
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- urceolus
- ring
- steel ball
- expansion link
- lining
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Abstract
The invention relates to a middle-self-locked cabin door supporting rod, which comprises a telescopic rod, an outer barrel, a lining and a spring, wherein the outer barrel is hollow, the telescopic rod is sleeved with the outer barrel, a plurality of circular through holes are formed in the wall of the outer barrel, the circle centers of the through holes are in one cross section of the outer barrel, each through hole is internally provided with a steel ball, and the depth of each through hole is greater than or equal to the radius of each steel ball; an annular outer groove is formed in the outer wall of the telescopic rod; the sum of the depth of each through hole and the depth of the annular outer groove is equal to the diameter of each steel ball; one end, far away from the telescopic rod, of the spring is fixedly connected with the outer wall of the outer barrel, and one end, close to the telescopic rod, of the spring is connected with the lining; the lining is of a hollow barrel shape, and the outer barrel is sleeved with the lining, an annular inner groove is formed in the inner wall, facing the outer barrel, of the lining, the depth of the annular inner groove is equal to that of the annular outer groove, and when the lining is moved to communicate the annular inner groove with the through holes, the steel balls are located in the annular inner groove and the through holes. The middle-self-locked cabin door supporting rod is quite convenient to use, and high in reliability.
Description
Technical field
The present invention relates to the fixed support part of aircraft or helicopter hatch door or hatchcover.
Background technology
At present, for all kinds of aircraft radomes safeguard hatch door generally all adopt telescopic gas spring complete hatch door unlatching, support and close.Because gas spring has hoisting force, in use supporting hinges need deflect past the rotary gemel of hatch door, just can make door close smoothly.As shown in Figure 1, B point is the inclined to one side line of crossing hatch door hinge AO when hatch door is closed, and hatch door can be closed smoothly.Some special construction restrictions due to aircraft, use gas spring cannot deflect past hatch door hinge, and the crack force of generation hatch door can not be closed hatch door.As shown in Figure 2, B point does not have the inclined to one side line of crossing hatch door hinge AO when hatch door is closed, and under the effect of gas spring hoisting force, hatch door cannot be closed.
Summary of the invention
The present invention aims to provide a kind of middle self-locking type hatch door strut, and it is both scalable, can complete secure support again, can also meet the requirement of hatch door under opening and closing two states simultaneously.
In the middle of of the present invention, self-locking type hatch door strut, comprises expansion link, urceolus, lining and spring; Urceolus hollow, and be socketed in the outside of expansion link, outer tube wall is provided with several manholes, and the center of circle of these through holes is all at the same cross-sectional plane of urceolus, and the degree of depth that each through hole is built-in with a steel ball and through hole is more than or equal to the radius of steel ball but is less than the diameter of steel ball; The outer wall of expansion link is provided with a ring-type water jacket; The degree of depth of through hole equates with described steel ball size with the degree of depth sum of ring-type water jacket, and when moving telescopic bar makes ring-type water jacket communicate with through hole, steel ball is arranged in ring-type water jacket and through hole; Spring is fixedly linked away from one end and the outer drum outer wall of expansion link, and one end of close expansion link is connected with lining; Lining is the tubular of hollow, it is socketed in the outside of urceolus, lining is provided with ring-type inside groove towards the inwall of urceolus, the degree of depth of ring-type inside groove is more than or equal to the degree of depth of ring-type water jacket but is less than the diameter of steel ball, when mobile lining makes ring-type inside groove communicate with through hole, steel ball is arranged in ring-type inside groove and through hole; When spring is during at extended configuration, lining is than the more close expansion link of through hole, when spring is during in most compressed state, lining than annular aperture further from expansion link.
Preferably, through hole being projected as in the plane at the arbitrary shaft section of urceolus place is square, and this square length is more than or equal to the diameter of steel ball; The internal groove side wall of ring-type water jacket being projected as along laterally zygomorphic two the bad circular arcs of urceolus axis in the plane at the arbitrary shaft section of urceolus place, these two bad circular arc place circle diameters equate, are all more than or equal to the diameter of steel ball; The projection of the internal groove side wall of ring-type inside groove in the plane at the arbitrary shaft section of urceolus place is also along laterally zygomorphic two the bad circular arcs of urceolus axis, and these two bad circular arc place circle diameters equate, are all more than or equal to the diameter of steel ball.
Or preferably, through hole being projected as in the plane at the arbitrary shaft section of urceolus place is square, and this square length is more than or equal to the diameter of steel ball; The internal groove side wall of ring-type water jacket in the plane at the arbitrary shaft section of urceolus place be projected as along urceolus axis laterally zygomorphic two trapezoidal, two trapezoidal bottoms are all near urceolus, and bottom be more than or equal to circle in trapezoidal with the corresponding chord length of high arc, described circle equates with steel ball size; The projection of the internal groove side wall of ring-type inside groove in the plane at the arbitrary shaft section of urceolus place be also along urceolus axis laterally zygomorphic two trapezoidal, two trapezoidal bottoms are all near urceolus, and bottom be more than or equal to circle in trapezoidal with the corresponding chord length of high arc, described circle equates with steel ball size.
More preferably, also comprise and separate lock tube and back-up ring; Back-up ring is raised on the outer wall of urceolus, and spring is all fixedly linked by back-up ring and outer drum outer wall away from one end of expansion link; The tubular that solution lock tube is hollow, it is socketed in back-up ring, the outside of spring and lining, its one end near expansion link is fixedly connected with lining one end near expansion link.
Further preferably, also comprise and separate the inhibiting device that lock tube slides.
At one further in preferred embodiment, inhibiting device is the spacing ring being arranged on regularly on the outer wall of described urceolus, and this inhibiting device is than separating lock tube further from expansion link; When separating lock tube, slide into inhibiting device place, ring-type inside groove communicates with through hole.
Or at another further in preferred embodiment, inhibiting device is also the spacing ring being arranged on regularly on the outer wall of described urceolus, but it is on the outer drum outer wall of separating between lock tube and urceolus.Separate lock tube inwall and be correspondingly set to different two sections of internal diameter, wherein away from the internal diameter of a section of expansion link, be less than the external diameter of inhibiting device, near the internal diameter of a section of expansion link, be greater than the external diameter of inhibiting device.
Or in another further preferred embodiment, do not need to arrange inhibiting device, only need to select the spring of suitable stroke, when solution lock tube slides into design attitude, spring is compressed to minimum length, now ring-type inside groove just communicates completely with through hole, and steel ball enters into ring-type inside groove and through hole.
Or further preferably, urceolus, expansion link, lining is conciliate lock tube and is cylindric.
Or further preferably, through hole is provided with four.
Compared with prior art, the present invention can be for supporting all kinds of hatch doors of safeguarding in aircraft radome, when it is installed to installation site and mode without strict demand, at hatch door, only open and expansion link need be stretched, steel ball blocks urceolus and expansion link, and strut gets final product auto lock, and stable support is provided.When hatch door is closed, lining is promoted to compression direction, steel ball is skidded off from expansion link, slip in lining, urceolus and expansion link release, hatch door can be closed.Use of the present invention is quite convenient, has met all kinds of reliable requests of safeguarding that hatch door supports in aircraft radome, has improved the efficiency of aircraft maintenance.
Accompanying drawing explanation
Fig. 1 is the operable structural representation of gas spring in prior art.
Fig. 2 is the structural representation that in prior art, gas spring cannot be used.
Fig. 3 is the shaft section partial schematic sectional view of middle self-locking type hatch door strut in embodiment mono-.
In figure, 1-connector, 2-urceolus, 3-separates lock tube, 4-back-up ring, 5-gas spring, 6-spring, 7-steady ring, 8-steel ball, 9-lining, 10-orienting sleeve, 11-expansion link, 12-joint, 13-oscillating bearing, 14-supporting hinges, 15-hatch door hinge, 16-inhibiting device.
The specific embodiment
Embodiment mono-
As shown in Figure 3, middle self-locking type hatch door strut of the present invention, comprises back-up ring 4, spring 6, and urceolus 2 cylindraceous, expansion link 11, lining 9 is conciliate lock tubes 3; Urceolus 2 hollows, right-hand member is socketed in the outside of expansion link 11 left ends, and urceolus 2 walls are provided with 4 through holes, and the center of circle of these through holes is all at the same cross-sectional plane of urceolus 2, and each through hole is built-in with a steel ball 8.Expansion link 11 left end terminations are provided with a steady ring 7 for welding with it, and the outer wall of steady ring 7 is provided with one perpendicular to the ring-type water jacket of urceolus center shaft.In the present embodiment, for the convenience of manufacturing and installing, ring-type water jacket is arranged on steady ring 7, also can according to circumstances directly ring-type water jacket be arranged on expansion link 11, or steady ring 7 be considered as to a part for expansion link 11.
The tubular that lining 9 is hollow, it is socketed in the outside of urceolus 2, and lining 9 is provided with the ring-type inside groove perpendicular to urceolus center shaft with the inwall of urceolus 2 junctions.Back-up ring 4 is raised on the outer wall of urceolus 2, and spring 6 left ends are fixedly linked by back-up ring 4 and urceolus 2 outer walls, and right-hand member and lining 9 are fixedly linked; What solution lock tube 3 was hollow is cylindric, and it is socketed in back-up ring 4, the outside of spring 6 and lining 9, and left end slides on urceolus 2, and right-hand member is fixedly connected with lining 9 one end near expansion link 11.When spring 6 is during at extended configuration, lining 9 is than the more close expansion link 11 of through hole, when spring 6 is during in most compressed state, lining 9 than annular aperture further from expansion link 11.
When preventing that expansion link 11 from pulling out from urceolus 2 because careless manipulation comes off, at urceolus 2, near one end of expansion link 11, be provided with the cylindric orienting sleeve 10 being connected with urceolus 2 these ends, this orienting sleeve 10 is fixedly linked with urceolus 2, and expansion link 11 is stuck in urceolus 2, make it from urceolus 2, to come off out.
For being slipped into smoothly, steel ball 8 skids off ring-type inside groove and ring-type water jacket, realize release and locking, the degree of depth of through hole is more than or equal to the radius of steel ball 8 but is less than the diameter of steel ball 8, the degree of depth sum of the degree of depth of through hole and ring-type water jacket and described steel ball 8 equal diameters, the degree of depth of ring-type inside groove is more than or equal to the degree of depth of ring-type water jacket but is less than the diameter of steel ball 8.Through hole being projected as in the plane at the arbitrary shaft section of urceolus 2 place is square, and this square length is more than or equal to the diameter of steel ball 8; The internal groove side wall of ring-type water jacket in the plane at the arbitrary shaft section of urceolus 2 place be projected as along urceolus 2 axis laterally zygomorphic two trapezoidal, two trapezoidal bottoms are all near urceolus 2, and bottom be more than or equal to circle in trapezoidal with the corresponding chord length of high arc, described circle and steel ball 8 equal diameters; The projection of the internal groove side wall of ring-type inside groove in the plane at the arbitrary shaft section of urceolus 2 place be also along urceolus 2 axis laterally zygomorphic two trapezoidal, two trapezoidal bottoms are all near urceolus 2, and bottom be more than or equal to circle in trapezoidal with the corresponding chord length of high arc, described circle and steel ball 8 equal diameters.When moving telescopic bar 11 makes ring-type water jacket communicate with through hole, steel ball 8 is arranged in ring-type water jacket and through hole; When mobile lining 9 makes ring-type inside groove communicate with through hole, steel ball 8 is arranged in ring-type inside groove and through hole.
In addition, be also fixedly provided with inhibiting device 16 on the outer wall of urceolus 2, this inhibiting device 16 is than separating lock tube 3 further from expansion link 11; When solution lock tube 3 slides into inhibiting device 16, when inhibiting device 16 will be separated lock tube 3 gear, now ring-type inside groove communicates with through hole.While being more convenient for operating like this, determine the sliding position of separating lock tube 3.
During use, the one end by urceolus 2 away from expansion link 11 is connected with connector 1, and expansion link 11 is connected with joint 12 away from one end of urceolus 2, and joint 12 is connected with oscillating bearing 13, then connector 1 and oscillating bearing 13 respectively with hatch door, hinge on the body of cabin is connected.When opening hatch door, expansion link 11 stretches out from urceolus 2, and when annular aperture is communicated with ring-type water jacket, steel ball 8 slips into ring-type water jacket, makes urceolus 2 and expansion link 11 that relative displacement cannot occur, thereby realize hatch door, opens pass acquisition stable support.Now, due to the effect of spring force, lining 9 can more approach expansion link, makes steel ball 8 locked in ring-type water jacket, realizes auto-lock function.At closing time, by separating lock tube 3, to the direction away from expansion link 11, promote, ring-type inside groove is communicated with annular aperture, steel ball 8 skids off ring-type water jacket, slips into ring-type inside groove, so relative displacement can occur for urceolus 2 and expansion link 11, expansion link 11 extend in urceolus 2, and hatch door is closed.
Embodiment bis-
In the middle of of the present invention, self-locking type hatch door strut, comprises back-up ring 4, spring 6, and urceolus 2 cylindraceous, expansion link 11, lining 9 is conciliate lock tube 3; Urceolus 2 hollows, right-hand member is socketed in the outside of expansion link 11 left ends, and urceolus 2 walls are provided with 4 through holes, and the center of circle of these through holes is all at the same cross-sectional plane of urceolus 2, and each through hole is built-in with a steel ball 8.Expansion link 11 left end terminations are provided with a steady ring 7 for welding with it, and the outer wall of steady ring 7 is provided with a ring-type water jacket.In the present embodiment, for the convenience of manufacturing and installing, ring-type water jacket is arranged on steady ring 7, also can according to circumstances directly ring-type water jacket be arranged on expansion link 11, or steady ring 7 be considered as to a part for expansion link 11.
The tubular that lining 9 is hollow, it is socketed in the outside of urceolus 2, and lining 9 is provided with ring-type inside groove with the inwall of urceolus 2 junctions.Back-up ring 4 is raised on the outer wall of urceolus 2, and spring 6 left ends are fixedly linked by back-up ring 4 and urceolus 2 outer walls, and right-hand member and lining 9 are fixedly linked; What solution lock tube 3 was hollow is cylindric, and it is socketed in back-up ring 4, the outside of spring 6 and lining 9, and left end slides on urceolus 2, and right-hand member is fixedly connected with lining 9 one end near expansion link 11.When spring 6 is during at extended configuration, lining 9 is than the more close expansion link 11 of through hole, when spring 6 is during in most compressed state, lining 9 than annular aperture further from expansion link 11.
When preventing that expansion link 11 from pulling out from urceolus 2 because careless manipulation comes off, at urceolus 2, near one end of expansion link 11, be provided with the cylindric orienting sleeve 10 being connected with urceolus 2 these ends, this orienting sleeve 10 is fixedly linked with urceolus 2, and expansion link 11 is stuck in urceolus 2, make it from urceolus 2, to come off out.
For being slipped into smoothly, steel ball 8 skids off ring-type inside groove and ring-type water jacket, realize release and locking, the degree of depth of through hole is more than or equal to the radius of steel ball 8, the degree of depth sum of the degree of depth of through hole and ring-type water jacket and described steel ball 8 equal diameters, the deep equality of the degree of depth of ring-type inside groove and ring-type water jacket.Through hole being projected as in the plane at the arbitrary shaft section of urceolus 2 place is square, and this square length is more than or equal to the diameter of steel ball 8; The internal groove side wall of ring-type water jacket being projected as along laterally zygomorphic two the bad circular arcs of urceolus 2 axis in the plane at the arbitrary shaft section of urceolus 2 place, these two bad circular arc place circle diameters equate, are all more than or equal to the diameter of steel ball 8; The projection of the internal groove side wall of ring-type inside groove in the plane at the arbitrary shaft section of urceolus 2 place is also along laterally zygomorphic two the bad circular arcs of urceolus 2 axis, and these two bad circular arc place circle diameters equate, are all more than or equal to the diameter of steel ball 8.When moving telescopic bar 11 makes ring-type water jacket communicate with through hole, steel ball 8 is arranged in ring-type water jacket and through hole; When mobile lining 9 makes ring-type inside groove communicate with through hole, steel ball 8 is arranged in ring-type inside groove and through hole.
In addition, on the outer wall of urceolus 2, be also fixedly provided with spacing ring, but it is on urceolus 2 outer walls of separating between lock tube 3 and urceolus 2.Separate lock tube 3 inwalls and be correspondingly set to different two sections of internal diameter, wherein away from the internal diameter of a section of expansion link 11, be less than the external diameter of spacing ring, near the internal diameter of a section of expansion link 11, be greater than the external diameter of spacing ring.
Or in another preferred embodiment, do not need to arrange inhibiting device, only need to select the spring 6 of suitable stroke, when solution lock tube 3 slides into design attitude, spring 6 is compressed to minimum length, and now ring-type inside groove just communicates completely with through hole, and steel ball 8 enters into ring-type inside groove and through hole.
?during use, one end by urceolus 2 away from expansion link 11 is connected with connector 1, expansion link 11 is connected with joint 12 away from one end of urceolus 2, joint 12 is connected with oscillating bearing 13, then connector 1 and oscillating bearing 13 respectively with hatch door, hinge on the body of cabin is connected, when opening hatch door, expansion link 11 stretches out from urceolus 2, when annular aperture is communicated with ring-type water jacket, steel ball 8 slips into ring-type water jacket, makes urceolus 2 and expansion link 11 that relative displacement cannot occur, thereby realize hatch door, opens pass acquisition stable support.At closing time, by separating lock tube 3, to the direction away from expansion link 11, promote, ring-type inside groove is communicated with annular aperture, steel ball 8 skids off ring-type water jacket, slips into ring-type inside groove, so relative displacement can occur for urceolus 2 and expansion link 11, expansion link 11 extend in urceolus 2, and hatch door is closed.
Claims (8)
1. in the middle of, self-locking type hatch door strut, is characterized in that comprising expansion link (11), urceolus (2), lining (9) and spring (6); Urceolus (2) hollow, and be socketed in the outside of expansion link (11), urceolus (2) wall is provided with several manholes, the center of circle of these through holes is all at the same cross-sectional plane of urceolus (2), and the degree of depth that each through hole is built-in with a steel ball (8) and through hole is more than or equal to the radius of steel ball (8) but is less than the diameter of steel ball (8); The outer wall of expansion link (11) is provided with a ring-type water jacket; The degree of depth sum of the degree of depth of through hole and ring-type water jacket and described steel ball (8) equal diameters, when moving telescopic bar (11) makes ring-type water jacket communicate with through hole, steel ball (8) is arranged in ring-type water jacket and through hole; Spring (6) is fixedly linked away from one end and urceolus (2) outer wall of expansion link (11), and one end of close expansion link (11) is connected with lining (9); The tubular that lining (9) is hollow, it is socketed in the outside of urceolus (2), lining (9) is provided with ring-type inside groove towards the inwall of urceolus (2), the degree of depth of ring-type inside groove is more than or equal to the degree of depth of ring-type water jacket but is less than the diameter of steel ball (8), when mobile lining (9) makes ring-type inside groove communicate with through hole, steel ball (8) is arranged in ring-type inside groove and through hole; When spring (6) is during at extended configuration, lining (9) is than the more close expansion link of through hole (11), when spring (6) is during in most compressed state, lining (9) than annular aperture further from expansion link (11).
2. self-locking type hatch door strut in the middle of as claimed in claim 1, is characterized in that through hole being projected as in the plane at the arbitrary shaft section of urceolus (2) place is square, and this square length is more than or equal to the diameter of steel ball (8); The internal groove side wall of ring-type water jacket being projected as along laterally zygomorphic two the bad circular arcs of urceolus (2) axis in the plane at the arbitrary shaft section of urceolus (2) place, these two bad circular arc place circle diameters equate, are all more than or equal to the diameter of steel ball (8); The projection of the internal groove side wall of ring-type inside groove in the plane at the arbitrary shaft section of urceolus (2) place is also along laterally zygomorphic two the bad circular arcs of urceolus (2) axis, these two bad circular arc place circle diameters equate, are all more than or equal to the diameter of steel ball (8).
3. self-locking type hatch door strut in the middle of as claimed in claim 1, is characterized in that through hole being projected as in the plane at the arbitrary shaft section of urceolus (2) place is square, and this square length is more than or equal to the diameter of steel ball (8); The internal groove side wall of ring-type water jacket in the plane at the arbitrary shaft section of urceolus (2) place be projected as along urceolus (2) axis laterally zygomorphic two trapezoidal, two trapezoidal bottoms are all near urceolus (2), and bottom be more than or equal to circle in trapezoidal with the corresponding chord length of high arc, described circle and steel ball (8) equal diameters; The projection of the internal groove side wall of ring-type inside groove in the plane at the arbitrary shaft section of urceolus (2) place be also along urceolus (2) axis laterally zygomorphic two trapezoidal, two trapezoidal bottoms are all near urceolus (2), and bottom be more than or equal to circle in trapezoidal with the corresponding chord length of high arc, described circle and steel ball (8) equal diameters.
4. the middle self-locking type hatch door strut as described in claim 1 or 2 or 3, characterized by further comprising and separate lock tube (3) and back-up ring (4); Back-up ring (4) is raised on the outer wall of urceolus (2), and spring (6) is all fixedly linked by back-up ring (4) and urceolus (2) outer wall away from one end of expansion link (11); Separate the tubular that lock tube (3) is hollow, it is socketed in back-up ring (4), the outside of spring (6) and lining (9), and its one end near expansion link (11) is fixedly connected with lining (9) one end near expansion link (11).
5. middle self-locking type hatch door strut as claimed in claim 4, characterized by further comprising and separate the inhibiting device (16) that lock tube slides.
6. self-locking type hatch door strut in the middle of as claimed in claim 5, on the outer wall of the urceolus (2) described in it is characterized in that, be also fixedly provided with inhibiting device (16), this inhibiting device (16) is than separating lock tube (3) further from expansion link (11); When solution lock tube (3) slides into inhibiting device (16), locate, ring-type inside groove communicates with through hole.
7. middle self-locking type hatch door strut as claimed in claim 4, is characterized in that urceolus (2), expansion link (11), and lining (9) is conciliate lock tube (3) and is cylindric.
8. middle self-locking type hatch door strut as claimed in claim 4, is characterized in that through hole is provided with four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310744666.3A CN103708023B (en) | 2013-12-31 | 2013-12-31 | Middle self-locking cabin door stay bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310744666.3A CN103708023B (en) | 2013-12-31 | 2013-12-31 | Middle self-locking cabin door stay bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103708023A true CN103708023A (en) | 2014-04-09 |
| CN103708023B CN103708023B (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310744666.3A Active CN103708023B (en) | 2013-12-31 | 2013-12-31 | Middle self-locking cabin door stay bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103708023B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110712745A (en) * | 2019-10-23 | 2020-01-21 | 中航飞机起落架有限责任公司 | Bearable pull rod device |
| CN112623263A (en) * | 2020-12-23 | 2021-04-09 | 大连长丰实业总公司 | Special supporting device for aircraft canopy connecting lock |
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| WO1996001064A1 (en) * | 1994-07-01 | 1996-01-18 | Tornare Francois | Adjustable-length walking stick |
| US5593239A (en) * | 1994-04-28 | 1997-01-14 | Tracor, Inc. | Extendable support pole |
| CN2773375Y (en) * | 2005-02-01 | 2006-04-19 | 卢伟明 | Pellet-type lock-cover telescopic rod |
| CN202833427U (en) * | 2012-09-29 | 2013-03-27 | 江苏昌力油缸有限公司 | Lifting oil cylinder capable of being fastened |
| CN203638079U (en) * | 2013-12-31 | 2014-06-11 | 陕西中航气弹簧有限责任公司 | Middle self-locking type cabin door supporting rod |
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2013
- 2013-12-31 CN CN201310744666.3A patent/CN103708023B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3543603A (en) * | 1968-01-10 | 1970-12-01 | Rex Chainbelt Inc | Automatic quick release mechanism |
| US5593239A (en) * | 1994-04-28 | 1997-01-14 | Tracor, Inc. | Extendable support pole |
| WO1996001064A1 (en) * | 1994-07-01 | 1996-01-18 | Tornare Francois | Adjustable-length walking stick |
| CN2773375Y (en) * | 2005-02-01 | 2006-04-19 | 卢伟明 | Pellet-type lock-cover telescopic rod |
| CN202833427U (en) * | 2012-09-29 | 2013-03-27 | 江苏昌力油缸有限公司 | Lifting oil cylinder capable of being fastened |
| CN203638079U (en) * | 2013-12-31 | 2014-06-11 | 陕西中航气弹簧有限责任公司 | Middle self-locking type cabin door supporting rod |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110712745A (en) * | 2019-10-23 | 2020-01-21 | 中航飞机起落架有限责任公司 | Bearable pull rod device |
| CN110712745B (en) * | 2019-10-23 | 2021-12-03 | 中航飞机起落架有限责任公司 | Bearable pull rod device |
| CN112623263A (en) * | 2020-12-23 | 2021-04-09 | 大连长丰实业总公司 | Special supporting device for aircraft canopy connecting lock |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103708023B (en) | 2016-06-22 |
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