CN112572779A - Electrically driven passive pillar upper lock - Google Patents
Electrically driven passive pillar upper lock Download PDFInfo
- Publication number
- CN112572779A CN112572779A CN202011397488.8A CN202011397488A CN112572779A CN 112572779 A CN112572779 A CN 112572779A CN 202011397488 A CN202011397488 A CN 202011397488A CN 112572779 A CN112572779 A CN 112572779A
- Authority
- CN
- China
- Prior art keywords
- unlocking
- electrically driven
- actuator
- uplock
- actuating rod
- Prior art date
- 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.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
- B64C25/08—Undercarriages non-fixed, e.g. jettisonable
- B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
- B64C25/18—Operating mechanisms
- B64C25/26—Control or locking systems therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
- B64C25/08—Undercarriages non-fixed, e.g. jettisonable
- B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
- B64C25/18—Operating mechanisms
- B64C25/22—Operating mechanisms fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
- B64C25/08—Undercarriages non-fixed, e.g. jettisonable
- B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
- B64C25/18—Operating mechanisms
- B64C25/24—Operating mechanisms electric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
- B64C25/08—Undercarriages non-fixed, e.g. jettisonable
- B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
- B64C25/18—Operating mechanisms
- B64C25/26—Control or locking systems therefor
- B64C25/30—Control or locking systems therefor emergency actuated
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Lock And Its Accessories (AREA)
Abstract
The invention discloses an electrically driven passive pillar upper lock which comprises a pillar upper lock mechanism (1) and an electrically driven unlocking actuator (2), wherein the electrically driven unlocking actuator (2) enables an unlocking rocker arm (7) of the pillar upper lock mechanism (1) to swing according to an unlocking control instruction of an upper computer, so that a lock hook (3) of the pillar upper lock mechanism (1) is driven to rotate, unlocking of the pillar upper lock mechanism (1) is realized, and after the unlocking is in place, the electrically driven unlocking actuator (2) enables the resetting according to a return control instruction of the upper computer. The invention cancels the hydraulic related driving device to unlock the upper lock of the support, thereby reducing the weight and the volume of the system; the electric drive finishes the dual-redundancy design, and the unlocking reliability is high and the maintenance requirement is low.
Description
Technical Field
The invention belongs to the technical field of structural design of aircraft landing gears, and particularly relates to an electrically driven passive strut uplock.
Background
Along with unmanned aerial vehicle in the wide application of military field, it is also increasing to unmanned aerial vehicle ground operating characteristic requirement, and is increasing harsh to undercarriage design, and full electric undercarriage combines technologies such as electric drive and undercarriage integrated monitoring to reduce undercarriage system maintenance demand by a wide margin, adapts to the characteristics that unmanned aerial vehicle flies less and deposits for a long time, realizes releasing and uses.
The function of the strut uplock is to fix the landing gear strut in the stowed position, to bear the landing gear mass load under each flight condition of the aircraft, and when the landing gear is being put in, the uplock must first be opened, so that reliable unlocking of the strut uplock is very important.
The traditional passive pillar upper lock is unlocked by adopting a hydraulic drive mode, a hydraulic actuator cylinder is usually arranged at an unlocking rocker arm, and the extension length of the hydraulic actuator cylinder is calculated according to the rotation angle of the rocker arm during unlocking, so that the traditional passive pillar upper lock is realized. The disadvantages of the hydraulic drive uplock are: the regular maintenance of the product is frequently ensured, the position of the upper lock is indicated by an in-place switch, the state monitoring and self-checking capability is poor, and the volume and the weight are large.
Disclosure of Invention
In view of the above-mentioned problems of the prior art, it is an object of the present invention to provide an electrically driven passive strut uplock suitable for the stow-up locking of landing gear struts, which is highly reliable, lightweight and requires little maintenance.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides an electrically driven passive pillar uplock, includes pillar uplock mechanism and electrically driven actuator of unblanking, and wherein electrically driven actuator of unblanking makes the rocking arm swing of unblanking of pillar uplock mechanism according to the unlocking control instruction of host computer on the pillar to the latch hook that drives the pillar uplock mechanism rotates, realizes unblanking of pillar uplock mechanism, and after unblanking targets in place, electrically driven actuator of unblanking makes the return according to the return control instruction of host computer.
The electrically driven unlocking actuator comprises a motor and an actuating rod which is in contact with an unlocking rocker arm of the pillar upper locking mechanism, and the motor drives the actuating rod to do linear motion, so that the unlocking rocker arm swings, and the actuating rod returns after unlocking in place. The motor drives the actuating rod to do linear motion by driving the ball screw through the motor and driving the actuating rod through the ball nut.
Wherein electrically driven actuator of unblanking still including detect and make the pole displacement volume to contrast with the control command of unblanking, monitor the device of state of unblanking.
Wherein electrically driven actuator of unblanking still includes emergent actuator, when electrically driven passive pillar overhead lock function of unblanking breaks down, starts emergent actuator and unblanks emergently. The emergency actuator is mainly composed of an igniter, an actuating rod, an actuating cylinder and the like, the emergency actuator is ignited by pressure according to a control instruction to generate high-temperature and high-pressure gas, pressure is built in the actuating cylinder, and the pressure rises until the actuating rod is pushed to move, so that the unlocking task of the upper lock is completed.
The invention cancels the hydraulic related driving device to unlock the upper lock of the support, thereby reducing the weight and the volume of the system; the electric drive finishes the dual-redundancy design, and the unlocking reliability is high and the maintenance requirement is low.
Drawings
FIG. 1 illustrates an electrically driven passive mast up lock of the present invention;
FIG. 2 illustrates a post up lock mechanism in the electrically driven passive post up lock of the present invention;
FIG. 3 illustrates an electrically driven unlocking actuator in the electrically driven passive post uplock of the present invention;
FIG. 4 illustrates the electrically driven passive strut up lock state of the present invention;
FIG. 5 illustrates a normally unlocked state of the electrically driven passive post uplock of the present invention;
FIG. 6 illustrates the electrically driven passive mast uplock emergency unlock state of the present invention;
FIG. 7 illustrates the electrically driven passive mast uplock locking process of the present invention;
FIG. 8 illustrates the normal unlocking process of the electrically driven passive post uplock of the present invention;
fig. 9 illustrates the electrically driven passive column uplock emergency unlocking procedure of the present invention.
Detailed Description
The invention is described in further detail below with reference to specific embodiments with reference to the attached drawings.
Figure 1 illustrates an electrically driven passive mast uplock of the present invention. As shown in the drawings, the electrically driven passive post uplock of the present invention comprises a post uplock mechanism 1 and an electrically driven unlocking actuator 2. The basic technical scheme of the invention is that an electrically driven unlocking actuator 2 receives and controls an unlocking rocker arm 7 (see figure 2) of a pillar upper lock mechanism 1 to swing according to an unlocking control instruction of an upper computer, so that a lock hook 3 (see figure 2) of the pillar upper lock mechanism is driven to rotate, unlocking of the pillar upper lock mechanism 1 is realized, and after the unlocking is in place, the electrically driven unlocking actuator 2 returns according to a return control instruction of the upper computer.
Specifically, as shown in fig. 2, the pillar upper lock mechanism 1 includes a shackle 3, a lock case 4, a tension spring 5, a torsion spring 6, an unlocking rocker arm 7, a locking rocker arm (not shown), and the like. The lock hook 3, the tension spring 5, the torsion spring 6 and the locking rocker arm are arranged in the lock shell 4, the unlocking rocker arm 7 penetrates through the lock shell 4 to be connected with the locking rocker arm through the spline shaft, the locking rocker arm is connected with the tension spring 5, and the torsion spring 6 applies torsion force to the lock hook 3.
As shown in fig. 3, the electrically driven unlocking actuator 2 includes an actuating rod 8, a feedback potentiometer 9, a motor 10, and a driver 11. The passive post up-lock mechanism 1 and the electrically driven unlocking actuator 2 are connected and secured by bolts. The rotating shaft of the motor 10 and the ball screw are integrated, and the actuating rod 8 sleeved on the ball screw is driven by the ball nut to drive the actuating rod to move linearly. Before unlocking, the end of the actuating rod 8 contacts the unlocking rocker 7 (see fig. 1).
When the electrically driven passive pillar uplock unlocks, the electrically driven unlocking actuator 2 receives an unlocking control instruction transmitted by an upper computer, the motor 10 rotates to drive the ball screw to synchronously rotate, the ball nut is driven to do linear motion, so that the actuating rod 8 sleeved on the ball screw is driven to do linear motion, the unlocking rocker arm 7 of the pillar uplock mechanism 1 is controlled to swing, the locking rocker arm and the lock hook 3 are driven to rotate, and the unlocking of the pillar uplock mechanism 1 is realized. Meanwhile, a slide rheostat is installed at the ball screw, an electric brush in the feedback potentiometer 9 can be driven to slide on a resistor in the action process of the ball nut, a voltage signal which is in direct proportion to the displacement of the ball nut and has a specified polarity is generated and fed back to a driver, the voltage signal is compared with an instruction signal of an upper computer, a position closed loop negative feedback control loop is formed, and the unlocking position of the upper lock is monitored. In the unlocking process, the driver 11 collects the current and position information of the motor 10 in real time, processes the current and position information and uploads the processed information to the upper computer, and the functions of online self-detection after electrification and key information monitoring in the flight process are achieved.
When the upper computer detects that the pillar upper lock unlocking mechanism 1 is unlocked in place, a return control instruction is transmitted to the electrically-driven unlocking actuator 2, the electrically-driven unlocking actuator 2 receives the return control instruction and controls the motor 10 to rotate reversely according to the return control instruction, the ball screw rotates synchronously to drive the ball nut to move linearly, and the actuating rod 8 returns to the initial position.
As shown in fig. 3, the electrically driven unlocking actuator 2 further includes an emergency actuator 12, when the unlocking function of the electrically driven passive pillar uplock is failed, the emergency actuator 12 is started to unlock, the emergency actuator 12 mainly includes an igniter, an actuating rod, an actuating cylinder and the like, the emergency actuator 12 is ignited by pressure according to a control command, high-temperature and high-pressure gas is generated, pressure is built in the actuating cylinder, and the pressure rises until the actuating rod is pushed to move, so that the uplock unlocking task is completed.
The working principle of the electrically driven passive pillar uplock of the invention is as follows:
locking state: the uplock is in the state shown in fig. 4, the actuating rod 8 of the electrically driven unlocking actuator is stopped at the right limit position, the stopping rocker arm tends to rotate clockwise under the action of the tension spring 5, and the lock hook 3 is in the locked state under the action of the tension spring 5 and the stopping rocker arm.
Unlocking state: the uplock is in the condition shown in fig. 5 (normal unlocking) and fig. 6 (emergency unlocking). The normal unlocking state is explained below, and the emergency unlocking state is similar to the normal unlocking state and will not be explained. As shown in fig. 5, the actuating rod 8 of the electrically driven unlocking actuator extends out, the unlocking rocker arm 7 drives the locking rocker arm to be in an unlocking state under the action of the actuating rod 8, the locking hook 3 tends to rotate counterclockwise under the action of the torsion spring 6, locking is performed between the locking hook 3 and the locking rocker arm, and the locking mechanism on the driven strut is in an unlocking state.
And (3) locking: as shown in fig. 7, when the pillar upper lock is locked, the driver 11 receives a return instruction, the motor 10 drives the ball screw to rotate, the ball screw drives the actuating rod 8 to move rightwards to a limit position to be stopped, the pillar lock ring collides with the lock hook 3 to overcome the torsional force of the torsion spring 6 to rotate clockwise so that the lock hook 3 moves at a locking position, the unlocking rocker arm 7 is connected with the locking rocker arm through the spline shaft, and the locking rocker arm rotates clockwise under the spring force of the tension spring 5 to return to the locking position, so that the locking state shown in fig. 4 is achieved. After locking, the lock ring is hooked by the lock hook 3, the lock hook 3 is in contact with the stop rocker arm, and the load applied to the lock hook 3 by the lock ring is transmitted to the rotating shaft at the rotating center of the lock hook and the stop rocker arm through the lock hook 3 and finally transmitted to the lock shell 4. Because the locking rocker arm is stressed to pass through the rotating center of the locking rocker arm, and the locking rocker arm is provided with a limited rotating structure (playing a role in skid resistance) at the upper locking position, the locking rocker arm cannot rotate, the locking hook 3 cannot rotate due to the contact with the locking ring, and finally the landing gear strut is locked at the upper position through the locking ring in contact with the locking hook 3.
Unlocking process: as shown in fig. 8, when the pillar upper lock is unlocked, the driver 11 receives an unlocking instruction, the motor 10 drives the ball screw to rotate, the ball screw drives the actuating rod 8 to move leftward to push the unlocking rocker arm 7 to rotate counterclockwise, the unlocking rocker arm 7 is connected with the locking rocker arm through the spline shaft, the locking rocker arm overcomes the acting force of the tension spring 5 to rotate counterclockwise, the locking rocker arm is separated from the lock hook 3, the lock hook 3 rotates to an unlocking position under the action of the torsional force of the torsional spring 6, the lock ring is separated from the lock hook 3, and the unlocking process is completed.
Emergency unlocking process: as shown in fig. 9, when the electrically driven unlocking actuator can not normally unlock, the driver 11 receives an emergency unlocking instruction, 12 priming system of the emergency actuator receives the instruction power-on back, the emergency actuating rod is pushed to move leftwards to push the unlocking rocker arm 7 to rotate anticlockwise, the unlocking rocker arm 7 is connected with the locking rocker arm through the spline shaft, the locking rocker arm overcomes the acting force of the tension spring 5 to rotate anticlockwise, the locking rocker arm is separated from the lock hook 3 to be in contact with the lock hook 3, the lock hook 3 rotates to the unlocking position under the action of the torsional force of the torsional spring 6, the lock ring is separated from the lock hook 3.
The invention is based on the full electric undercarriage retracting mechanism and the driving mechanism, and realizes the functions of lowering, retracting and locking the undercarriage supporting column by using an electric actuator and a full electric undercarriage controller. Compared with the traditional hydraulic pressure, the electrically driven passive pillar uplock has the advantages of high reliability, high energy efficiency, stable operation, good dynamic characteristic, light volume and weight, low maintenance requirement, good state monitoring capability, simple structure, low cost and the like. The passive uplock can be widely applied to the passive uplocks with higher reliability requirements in aviation and spacecrafts.
Claims (7)
1. The utility model provides an electrically driven passive pillar lock on position, latch mechanism (1) and electrically driven actuator (2) of unblanking on the pillar, wherein electrically driven actuator (2) of unblanking according to the unlocking control instruction of host computer, make the rocking arm (7) of unblanking of latch mechanism (1) on the pillar swing to latch hook (3) of latch mechanism (1) on the drive pillar rotate, realize unblanking of latch mechanism (1) on the pillar, after unblanking targets in place, electrically driven actuator (2) of unblanking make the return according to the return control instruction of host computer.
2. An electrically driven passive post uplock according to claim 1, wherein the electrically driven unlocking actuator (2) comprises a motor (10) and an actuating rod (8) in contact with the unlocking rocker of the post uplock mechanism, the motor (10) driving the actuating rod (8) in a linear movement, thereby swinging the unlocking rocker (7) and returning the actuating rod (8) after unlocking in place.
3. An electrically driven passive prop lock according to claim 2 wherein the linear movement of the actuating rod (8) by the motor (10) is achieved by the ball screw being driven by the motor (10) and the actuating rod (8) being driven by the ball nut.
4. An electrically driven passive post uplock according to claim 1, wherein the electrically driven unlocking actuator (2) further comprises means for detecting the displacement of the actuating rod (8) to monitor the unlocked state in comparison with the unlocking control command.
5. An electrically driven passive column uplock according to claim 1, wherein the electrically driven unlocking actuator (2) further comprises an emergency actuator (12) for performing emergency unlocking when the electrically driven passive column uplock unlocking function fails.
6. An electrically driven passive prop up-lock according to claim 6 wherein the emergency actuator (12) comprises an igniter, an actuating rod and an actuating cylinder, the igniter is energized to ignite and generate high temperature and high pressure gas during emergency unlocking, and the actuating cylinder pushes the actuating rod to move under pressure to complete the emergency unlocking.
7. The electrically driven passive post uplock of claim 1, wherein during the unlocking operation, the driver collects the current and position information of the motor in real time and uploads the information to the host computer after processing, so as to perform online self-detection after power-on and monitoring of key information during the flight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011397488.8A CN112572779A (en) | 2020-12-04 | 2020-12-04 | Electrically driven passive pillar upper lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011397488.8A CN112572779A (en) | 2020-12-04 | 2020-12-04 | Electrically driven passive pillar upper lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112572779A true CN112572779A (en) | 2021-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011397488.8A Pending CN112572779A (en) | 2020-12-04 | 2020-12-04 | Electrically driven passive pillar upper lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112572779A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060163426A1 (en) * | 2003-07-08 | 2006-07-27 | Smiths Group Plc | Locking mechanisms |
| US20110056197A1 (en) * | 2007-12-21 | 2011-03-10 | Messier-Dowty Inc. | Landing gear uplock mechanism employing thermal phase-change actuation |
| CN203111497U (en) * | 2012-12-27 | 2013-08-07 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Power backup unlocking device of gear uplock |
| CN204210730U (en) * | 2014-09-18 | 2015-03-18 | 中国商用飞机有限责任公司 | Landing gear uplock mechanism |
| CN204527619U (en) * | 2015-02-12 | 2015-08-05 | 中航飞机起落架有限责任公司 | A kind of multifunctional unit shackle lock |
| CN109515697A (en) * | 2018-12-04 | 2019-03-26 | 四川凌峰航空液压机械有限公司 | The holder locking apparatus that rises and falls suitable for different motion track |
| CN110065623A (en) * | 2019-04-12 | 2019-07-30 | 西安飞机工业（集团）有限责任公司 | A kind of landing gear uplock for airplanes structure |
| CN110582445A (en) * | 2017-04-13 | 2019-12-17 | 空中客车营运有限公司 | Aircraft uplock |
| US20200269973A1 (en) * | 2019-02-25 | 2020-08-27 | Airbus Operations Limited | Aircraft landing gear uplock system |
-
2020
- 2020-12-04 CN CN202011397488.8A patent/CN112572779A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060163426A1 (en) * | 2003-07-08 | 2006-07-27 | Smiths Group Plc | Locking mechanisms |
| US20110056197A1 (en) * | 2007-12-21 | 2011-03-10 | Messier-Dowty Inc. | Landing gear uplock mechanism employing thermal phase-change actuation |
| CN203111497U (en) * | 2012-12-27 | 2013-08-07 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Power backup unlocking device of gear uplock |
| CN204210730U (en) * | 2014-09-18 | 2015-03-18 | 中国商用飞机有限责任公司 | Landing gear uplock mechanism |
| CN204527619U (en) * | 2015-02-12 | 2015-08-05 | 中航飞机起落架有限责任公司 | A kind of multifunctional unit shackle lock |
| CN110582445A (en) * | 2017-04-13 | 2019-12-17 | 空中客车营运有限公司 | Aircraft uplock |
| CN109515697A (en) * | 2018-12-04 | 2019-03-26 | 四川凌峰航空液压机械有限公司 | The holder locking apparatus that rises and falls suitable for different motion track |
| US20200269973A1 (en) * | 2019-02-25 | 2020-08-27 | Airbus Operations Limited | Aircraft landing gear uplock system |
| CN110065623A (en) * | 2019-04-12 | 2019-07-30 | 西安飞机工业（集团）有限责任公司 | A kind of landing gear uplock for airplanes structure |
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Application publication date: 20210330 |