CN202108808U - Undercarriage actuating cylinder locking device - Google Patents
Undercarriage actuating cylinder locking device Download PDFInfo
- Publication number
- CN202108808U CN202108808U CN2011200827105U CN201120082710U CN202108808U CN 202108808 U CN202108808 U CN 202108808U CN 2011200827105 U CN2011200827105 U CN 2011200827105U CN 201120082710 U CN201120082710 U CN 201120082710U CN 202108808 U CN202108808 U CN 202108808U
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- Prior art keywords
- sliding sleeve
- socket
- locking device
- key
- pressurized strut
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- Expired - Lifetime
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 238000009987 spinning Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 2
- 239000011324 bead Substances 0.000 abstract 2
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
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Abstract
The utility model discloses an undercarriage actuating cylinder locking device comprising a nut socket (5) and a locking mechanism sleeved on the outer surface of the nut socket (5). The locking mechanism adopts a single spring reposition circular steel bead lock structure. By using a small stroke between the nut socket (5) and a sliding sleeve (10), the lock and the unlock of the steel bead lock can be realized, thereby the reliable mechanical lock and the relatively higher anti-impact ability can be achieved. Because the step structure machined by the nut socket (5) is disposed on a shaft external cylindrical surface, and main part of the locking device, the sliding sleeve (10), has a simple-structured inner chamber, the machining can be easy and convenient. At the same time, the locking mechanism of the locking device can be detached from the nut socket (5) one by one by only dismounting a lower position-restricted nut (14), instead of arranging a wrench groove or using a special tool to dismount the retaining ring, the position-restricted nut (14) and the sliding sleeve (10) in the prior arts. The maintenance and dismounting of the locking device provided in the utility model is also very convenient.
Description
Technical field
The utility model relates to a kind of undercarriage pressurized strut locking device, relates in particular to a kind of undercarriage electric actuating tube locking device.
Background technique
Traditional pressurized strut is the hydraulic transmission form, and along with the development and progress of technology, the electric actuating tube is applied; Especially be applied at small-sized electric aircraft undercarriage control device, take off and the landing process in pressurized strut is produced bigger impulsive load, can the secure support undercarriage leg under the load effect in order to ensure pressurized strut; Must stretch out the back fully in pressurized strut and reliably lock through locking device, general electrical actuation tube locking is mainly through brake holding realizes to motor, when pressurized strut reaches terminal position; Motor outage, the brake holding that is connected with motor coaxle energising, the rotation of the frictional force restriction motor shaft through brake block is with the purpose of realization latching ram bar; This locking mode is reliable under the less situation of load; But the enormous impact load in undercarriage folding and unfolding process will cause the fracture of conventional belt wheel, and locking was lost efficacy; Therefore; Can't satisfy the requirement of high reliability on the aircraft, the patent No. is the locking device that 200720176406.0 utility model patent has provided a kind of electric retractable pressurized strut, though this locking device can solve reliable locking problem; But the cavity shape of the critical piece piston of its locking device is very complicated, has brought difficulty to machining piston.
Summary of the invention
The technical problem that the utility model will solve is to provide the undercarriage pressurized strut locking device that a kind of not only difficulty of processing is little but also can reliably lock.
For solving the problems of the technologies described above, a kind of undercarriage pressurized strut locking device of the utility model comprises ut socket and the locking mechanism that is sleeved on the ut socket outer surface; It is characterized in that: described ut socket is the cylindrical shell with step cylindrical, and ut socket is sleeved on the leading screw, and the big step end of ut socket is connected with feed screw nut; Big step outer edge surface has two axial depressions, is provided with key in the depression, and the part that key protrudes in depression places the groove of outer tube inner wall; The groove Spielpassung of the width of key and outer tube inner wall; The small stair end of ut socket is shaped on outside thread, and described locking mechanism comprises preceding snap ring, back snap ring, elastic element, stop nut, sliding sleeve and steel ball, and the inwall stage casing of described sliding sleeve has the prominent ring of a circle multilayer turriform; Sliding sleeve has a plurality of radially-arranged through holes near two ends; Described sliding sleeve is enclosed within on the small stair outer rim of ut socket, snap ring and elastic element before being disposed with between the prominent ring of the large and small step transition end face of ut socket and the turriform of sliding sleeve, and the opposite side of the prominent ring of the turriform of sliding sleeve sets gradually and has elastic component, the back snap ring; Described stop nut is threaded in the small stair end of ut socket; Stop nut spinning is at an end of back snap ring, and the outer wall of described sliding sleeve is provided with two axial depressions, is provided with key in the depression; The part that key protrudes in depression places the groove of outer tube inner wall; The groove Spielpassung of the width of key and outer tube inner wall, described steel ball are arranged in the radial direction through hole of sliding sleeve, and described sliding sleeve one end is connected with piston rod.
As optimal way; Described elastic element adopts cylindrical spring or butterfly spring; Two axial depressions of the big step outer edge surface of described ut socket are positioned at the two ends of same radial line; Two axial depressions of the outer wall of described sliding sleeve are positioned at the two ends of same radial line, and described sliding sleeve one end is shaped on one section internal thread, is connected with piston rod thread.
The utility model has following good effect than existing technology.A kind of undercarriage pressurized strut locking device of the utility model, steel ball is positioned in the locked groove of pressurized strut urceolus by preceding snap ring or back snap ring during locking state, guarantees that the locking of piston rod and urceolus for one, possesses higher impact resistance, reliable lock; In addition owing to increased the ut socket parts; Ledge structure is arranged on the periphery; Make the inner chamber of the critical piece sliding sleeve of locking device that a bulge loop can only be set, need not make multistage internal thread and bulge loop, the processing of sliding sleeve inner chamber is easier with respect to the piston of existing technology like this; Simultaneously; Only need pull down stop nut during dismounting and just can the locking mechanism of locking device be taken off from ut socket one by one, need not as existing technology, to be provided with the spanner groove or use special extracting tool to dismantle baffle ring, stop nut and sliding sleeve, so the locking device repair demolition of the utility model be also very convenient.
Description of drawings
Fig. 1 is the structural representation of a kind of undercarriage pressurized strut locking device of the utility model.
Fig. 2 is the schematic perspective view of ut socket of a kind of undercarriage pressurized strut locking device of the utility model.
Fig. 3 is the schematic perspective view of sliding sleeve of a kind of undercarriage pressurized strut locking device of the utility model.
Fig. 4 is the cross-sectional schematic of sliding sleeve of a kind of undercarriage pressurized strut locking device of the utility model.
Fig. 5 be the utility model a kind of undercarriage pressurized strut locking device preceding baffle ring or the back baffle ring schematic perspective view.
Fig. 6 is the schematic perspective view of stop nut of a kind of undercarriage pressurized strut locking device of the utility model.
1. belt pulleys among the figure, 2. leading screw, 3. key, 4. feed screw nut, 5. ut socket, 6. before snap ring, 7. urceolus, 8 and 13. steel balls, 9 and 11. springs, 10. sliding sleeve, 12. back snap rings, 14. stop nuts, 15. piston rods.
Embodiment
A kind of undercarriage pressurized strut locking device of the utility model has been shown among Fig. 1 to Fig. 6; Locking device comprises ut socket 5 and the locking mechanism that is sleeved on ut socket 5 outer surfaces, and it is characterized in that: described ut socket 5 is the cylindrical shells with step cylindrical, and ut socket 5 is sleeved on the leading screw 2; The big step end of ut socket 5 is connected with feed screw nut 4; Big step outer edge surface has two axial depressions, is provided with key 3 in the depression, and the part that key 3 protrudes in depression places the groove of urceolus 7 inwalls; The groove Spielpassung of the width of key 3 and urceolus 7 inwalls; The small stair end of ut socket 5 is shaped on outside thread, and described locking mechanism comprises preceding snap ring 6, back snap ring 12, elastic element 9 and 11, stop nut 14, sliding sleeve 10, steel ball 8 and 13, and the inwall stage casing of described sliding sleeve 10 has the prominent ring of a circle multilayer turriform; Sliding sleeve 10 has a plurality of radially-arranged through holes near two ends; Described sliding sleeve 10 is enclosed within on the small stair outer rim of ut socket 5, and snap ring 6 and elastic element 9 before being disposed with between the prominent ring of the large and small step transition end face of ut socket 5 and the turriform of sliding sleeve 10, the opposite side of the prominent ring of the turriform of sliding sleeve 10 set gradually and have elastic component 11, back snap ring 12; Described stop nut 14 is threaded in the small stair end of ut socket 5; Stop nut 14 spinning are at an end of back snap ring 12, and the outer wall of described sliding sleeve 10 is provided with two axial depressions, is provided with key 3 in the depression; The part that key 3 protrudes in depression places the groove of urceolus 7 inwalls; The groove Spielpassung of the width of key 3 and urceolus 7 inwalls, described steel ball 8 and 13 is arranged in the radial direction through hole of sliding sleeve 10, and described ut socket 5 all is provided with key 3 with sliding sleeve 10 and prevents in urceolus 7, to rotate.
As optimal way, described sliding sleeve 10 1 ends are connected with piston rod 15.Described elastic element 9 and 11 is cylindrical spring or butterfly spring.Two axial depressions of the big step outer edge surface of described ut socket 5 are positioned at the two ends of same radial line.Two axial depressions of the outer wall of described sliding sleeve 10 are positioned at the two ends of same radial line.Described sliding sleeve 10 1 ends are shaped on one section internal thread, are threaded with piston rod 15, and are as shown in Figure 3.
The working principle of locking device is when electric motor starting; The rotation of motor passes to the screw mandrel 2 in the pressurized strut through the belt pulley 1 of speed reducer and lazy-tongs; Screw mandrel 2 drives ut socket 5 moving linearlies that are connected with feed screw nut 4; Preceding snap ring 6 moves right and removes the constraint to steel ball 8 under ut socket 5 extruding, steel ball 8 skids off locked groove and realizes release; Preceding snap ring 6 continues one section very little distance of motion, promotes sliding sleeve 10 after the left end face of turriform bulge loops contacts in sliding sleeve 10 and travels forward with piston rod 15, when piston rod 15 moves near end; Steel ball 13 slips in the annular lock groove of urceolus 7; Back snap ring 12 holds out against steel ball 13 under the effect of spring reset power, and complete and locked groove applying, and back snap ring 12 moves forward and stops to stop nut 14 places of ut socket 5; And finally tighten steel ball 13, be accomplished to position locking.
Claims (5)
1. undercarriage pressurized strut locking device; Comprise ut socket (5) and be sleeved on the locking mechanism of ut socket (5) outer surface, it is characterized in that: described ut socket (5) is the cylindrical shell with step cylindrical, and ut socket (5) is sleeved on the leading screw (2); The big step end of ut socket (5) is connected with feed screw nut (4); Big step outer edge surface has two axial depressions, is provided with key (3) in the depression, and the part that key (3) protrudes in depression places the groove of urceolus (7) inwall; The groove Spielpassung of the width of key (3) and urceolus (7) inwall; The small stair end of ut socket (5) is shaped on outside thread, and described locking mechanism comprises preceding snap ring (6), back snap ring (12), elastic element (9,11), stop nut (14), sliding sleeve (10) and steel ball (8,13), and the inwall stage casing of described sliding sleeve (10) has the prominent ring of a circle multilayer turriform; Sliding sleeve (10) has a plurality of radially-arranged through holes near two ends; Described sliding sleeve (10) is enclosed within on the small stair outer rim of ut socket (5), is disposed with preceding snap ring (6) and elastic element (9) between the prominent ring of the large and small step transition end face of ut socket (5) and the turriform of sliding sleeve (10), and the opposite side of the prominent ring of the turriform of sliding sleeve (10) sets gradually have elastic component (11), back snap ring (12); Described stop nut (14) is threaded in the small stair end of ut socket (5); Stop nut (14) spinning is at an end of back snap ring (12), and the outer wall of described sliding sleeve (10) is provided with two axial depressions, is provided with key (3) in the depression; The part that key (3) protrudes in depression places the groove of urceolus (7) inwall; The groove Spielpassung of the width of key (3) and urceolus (7) inwall, described steel ball (8,13) is arranged in the radial direction through hole of sliding sleeve (10), and described sliding sleeve (10) one ends are connected with piston rod (15).
2. a kind of undercarriage pressurized strut locking device according to claim 1 is characterized in that: described elastic element (9,11) is cylindrical spring or butterfly spring.
3. a kind of undercarriage pressurized strut locking device according to claim 1, it is characterized in that: two axial depressions of the big step outer edge surface of described ut socket (5) are positioned at the two ends of same radial line.
4. a kind of undercarriage pressurized strut locking device according to claim 1, it is characterized in that: two axial depressions of the outer wall of described sliding sleeve (10) are positioned at the two ends of same radial line.
5. a kind of undercarriage pressurized strut locking device according to claim 1 is characterized in that: described sliding sleeve (10) one ends are shaped on one section internal thread, are threaded with piston rod (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200827105U CN202108808U (en) | 2011-03-25 | 2011-03-25 | Undercarriage actuating cylinder locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200827105U CN202108808U (en) | 2011-03-25 | 2011-03-25 | Undercarriage actuating cylinder locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202108808U true CN202108808U (en) | 2012-01-11 |
Family
ID=45434244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200827105U Expired - Lifetime CN202108808U (en) | 2011-03-25 | 2011-03-25 | Undercarriage actuating cylinder locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202108808U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162509A (en) * | 2011-03-25 | 2011-08-24 | 成都飞机工业（集团）有限责任公司 | Locking device of electric actuating cylinder |
| CN104931253A (en) * | 2015-05-28 | 2015-09-23 | 南京理工大学 | Ball screw servo loading test device based on hydraulic servo system |
| CN106438576A (en) * | 2016-11-14 | 2017-02-22 | 中北大学 | Locking mechanism for locking at any position and locking precision determination method thereof |
| CN109268349A (en) * | 2018-11-23 | 2019-01-25 | 北京精密机电控制设备研究所 | A kind of double redundancy hydraulic actuator with single-ended mechanical lock |
| CN110356545A (en) * | 2019-08-21 | 2019-10-22 | 成都弗格森液压机电有限公司 | A kind of unmanned plane undercarriage control retaining mechanism |
| CN112636528A (en) * | 2020-12-08 | 2021-04-09 | 四川凌峰航空液压机械有限公司 | Redundancy emergency function electromechanical actuator |
| CN113146679A (en) * | 2021-04-20 | 2021-07-23 | 哈尔滨工业大学 | Incomplete-constraint quick butt joint mechanism |
| CN114046286A (en) * | 2021-11-10 | 2022-02-15 | 湖北三江航天红阳机电有限公司 | Cold air unlocking actuator and use method thereof |
| CN114458657A (en) * | 2022-04-12 | 2022-05-10 | 恒宏智能装备有限公司 | Hydraulic cylinder and working position locking method thereof |
-
2011
- 2011-03-25 CN CN2011200827105U patent/CN202108808U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162509A (en) * | 2011-03-25 | 2011-08-24 | 成都飞机工业（集团）有限责任公司 | Locking device of electric actuating cylinder |
| CN102162509B (en) * | 2011-03-25 | 2013-06-05 | 成都飞机工业（集团）有限责任公司 | Locking device of electric actuating cylinder |
| CN104931253A (en) * | 2015-05-28 | 2015-09-23 | 南京理工大学 | Ball screw servo loading test device based on hydraulic servo system |
| CN104931253B (en) * | 2015-05-28 | 2018-09-04 | 南京理工大学 | Ball-screw servo loading experimental rig based on Hydrauservo System |
| CN106438576A (en) * | 2016-11-14 | 2017-02-22 | 中北大学 | Locking mechanism for locking at any position and locking precision determination method thereof |
| CN106438576B (en) * | 2016-11-14 | 2018-05-29 | 中北大学 | A kind of retaining mechanism for any position locking |
| CN109268349A (en) * | 2018-11-23 | 2019-01-25 | 北京精密机电控制设备研究所 | A kind of double redundancy hydraulic actuator with single-ended mechanical lock |
| CN109268349B (en) * | 2018-11-23 | 2020-09-18 | 北京精密机电控制设备研究所 | Dual-redundancy hydraulic actuator with single-end mechanical lock |
| CN110356545A (en) * | 2019-08-21 | 2019-10-22 | 成都弗格森液压机电有限公司 | A kind of unmanned plane undercarriage control retaining mechanism |
| CN112636528A (en) * | 2020-12-08 | 2021-04-09 | 四川凌峰航空液压机械有限公司 | Redundancy emergency function electromechanical actuator |
| CN112636528B (en) * | 2020-12-08 | 2023-09-26 | 四川凌峰航空液压机械有限公司 | Electromechanical actuator with redundancy emergency function |
| CN113146679A (en) * | 2021-04-20 | 2021-07-23 | 哈尔滨工业大学 | Incomplete-constraint quick butt joint mechanism |
| CN114046286A (en) * | 2021-11-10 | 2022-02-15 | 湖北三江航天红阳机电有限公司 | Cold air unlocking actuator and use method thereof |
| CN114046286B (en) * | 2021-11-10 | 2023-10-20 | 湖北三江航天红阳机电有限公司 | Cold air unlocking actuator and using method thereof |
| CN114458657A (en) * | 2022-04-12 | 2022-05-10 | 恒宏智能装备有限公司 | Hydraulic cylinder and working position locking method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120111 Effective date of abandoning: 20130605 |
|
| RGAV | Abandon patent right to avoid regrant |