CN106610338B - High rigidity experimental rig for cabin door lock reliability test - Google Patents
High rigidity experimental rig for cabin door lock reliability test Download PDFInfo
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- CN106610338B CN106610338B CN201611215048.XA CN201611215048A CN106610338B CN 106610338 B CN106610338 B CN 106610338B CN 201611215048 A CN201611215048 A CN 201611215048A CN 106610338 B CN106610338 B CN 106610338B
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- door lock
- cabin door
- sliding rail
- load control
- mounting plate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Abstract
For the high rigidity experimental rig of cabin door lock reliability test, belong to airplane cabin door lock reliability test technical field.The present invention is to solve the problems, such as that existing cabin door lock experimental rig overall stiffness and single order dominant frequency are relatively low.Its cabin door lock mounting plate is fixed on bottom plate in a vertical manner, and the both sides of cabin door lock mounting plate are respectively cabin door lock trial zone and Support；Cabin door lock mounting plate top is equipped with bolt hole, for installing cabin door lock；Cabin door lock is mounted on cabin door lock trial zone；Reinforcing plate is mounted on Support, and is consolidated corresponding to cabin door lock installed position and cabin door lock mounting plate and bottom plate；Lock ring adjusts unit and is arranged at cabin door lock trial zone with load control unit；Lock ring adjusts unit and is arranged on bottom plate along the direction parallel with cabin door lock mounting plate, and installation direction of the load control unit on bottom plate and lock ring adjusting unit are perpendicular.The present invention is used for the reliability test of airplane cabin door lock.
Description
Technical field
The present invention relates to the high rigidity experimental rigs for cabin door lock reliability test, belong to the examination of airplane cabin door lock reliability
Test technical field.
Background technology
Airplane cabin door lock is the important spare part of Landing Gear System, for locking hatch door after taking off, and in aircraft
Hatch door is unlocked before landing.If cabin door lock cannot lock hatch door after taking off, hatch door cannot be undertaken in flight course
Aerodynamic load is simultaneously maintained at locking state；If cabin door lock cannot smoothly unlock hatch door before aircraft landing, gently if cause to fly
Machine mission failure, major accident that is heavy then causing fatal crass.It can be seen that the reliability of cabin door lock is to be directly related to flight
Safety.In order to assess the reliability index of cabin door lock, the dominant failure mode and weak link of exposure cabin door lock are improved
The corrective measure of the reliability level of cabin door lock, it is necessary to which reliability test is carried out to cabin door lock.
Cabin door lock parts are more, the principle of work and power is complicated, and use condition is severe, using process by random vibration, high/low temperature,
The collective effect of the composite factors such as humidity, lock ring load, hydraulic pressure, it is therefore desirable to which a kind of reliability test can carry out
The simulation of cabin door lock motor function, the load of lock ring load, and there is smaller volume, weight and larger rigidity simultaneously, with
It can be mounted in the smaller combined environment test case in space and reliability test is carried out to cabin door lock.
The problem of for cabin door lock reliability test, Chinese patent《A kind of device for testing reliability of cabin door lock for aircrafts》, specially
Profit number is 201210033851.7 Hes《A kind of device for testing reliability of cabin door lock for aircrafts》, Patent No. 201410279845.9,
It is the experimental rig for being directed to the hatch door shaft situation perpendicular and parallel with cabin door lock latch hook shaft respectively and proposing.Chinese patent
《A kind of improved aircraft landing gear cabin door lock experimental rig》, Patent No. 201610352630.4, describe it is a kind of can be real
The experimental rig of existing lock ring varying load load.Chinese patent《For the horizontal of undercarriage hatch door uplock reliability test
Experimental rig》, Patent No. 201410215943.6, and《For the vertical of undercarriage hatch door uplock reliability test
Experimental rig》, Patent No. 201410215944.0, for undercarriage trigger-type hatch door uplock propose respectively it is sleeping
Formula and vertical experimental rig.Above-mentioned 5 kinds of experimental rigs can realize simulation and random vibration, the height of cabin door lock motor function
The load of the composite factors such as low epidemic disaster, hydraulic pressure and lock ring load, volume and weight also meet wanting for combined environment test case
It asks, but through being found in dynamic analysis and actual use, since the height of the experimental rig is higher, and weight demands are stringent,
The overall stiffness and single order dominant frequency of experimental rig are relatively low, and existing experimental rig is caused to be generated more to vibration stress in low frequency region
Serious enlarge-effect, it is difficult to the random vibration power spectral density plot of cabin door lock be made to be within the limits of error of ± 3dB.
Invention content
The invention aims to solve the problems, such as that existing cabin door lock experimental rig overall stiffness and single order dominant frequency are relatively low, carry
A kind of high rigidity experimental rig for cabin door lock reliability test is supplied.
High rigidity experimental rig of the present invention for cabin door lock reliability test, it includes reinforcing plate, cabin door lock peace
Loading board, bottom plate, lock ring adjust unit and load control unit,
It includes that No.1 sliding rail, two No.1 sliding blocks, two lock ring adjusting blocks, two No.1 sliding rails connect that lock ring, which adjusts unit,
Head, center sliding rail connector, two No.1 connecting rods and lock ring；
Load control unit includes No. two sliding rails, No. two sliding blocks, disk spring group, load control bar, load control block, two
Number sliding rail connector and two No. two connecting rods；
Cabin door lock mounting plate is fixed on bottom plate in a vertical manner, and the both sides of cabin door lock mounting plate are respectively cabin door lock experiment
Area and Support；Cabin door lock mounting plate top is equipped with bolt hole, for installing cabin door lock；Cabin door lock is tested mounted on cabin door lock
Area；Reinforcing plate is mounted on Support, and is consolidated corresponding to cabin door lock installed position and cabin door lock mounting plate and bottom plate；
Lock ring adjusts unit and is arranged at cabin door lock trial zone with load control unit；Lock ring adjusts unit edge and cabin door lock
The parallel direction of mounting plate is arranged on bottom plate, and installation direction of the load control unit on bottom plate adjusts unit with lock ring and mutually hang down
Directly；
The No.1 sliding rail connector that No.1 sliding rail is connected by its both ends is connected to intermediate center sliding rail connector is socketed in
The installing zone of bottom plate below cabin door lock installation region, two No.1 sliding blocks and two lock ring adjusting blocks are socketed in No.1 sliding rail
On, two No.1 sliding blocks are symmetrical arranged in center sliding rail connector both sides, and two lock ring adjusting blocks divide in center sliding rail connector both sides
Not between No.1 sliding rail connector and No.1 sliding block and it is symmetrical arranged；One end of two No.1 connecting rods is connected respectively one
The rotation connection end of No.1 sliding block, the other end of two No.1 connecting rods are linked together by lock ring；The upper end of cabin door lock passes through
It is bolted on the bolt hole of cabin door lock mounting plate, the latch hook of cabin door lock is matched with lock ring；
No. two sliding rails and No. two sliding rails are perpendicular, and one end is fixed in the centre bore of center sliding rail connector, and the other end passes through
No. two sliding rail connectors are connected on bottom plate；No. two sliding blocks, disk spring group and load control block are socketed in successively on No. two sliding rails,
Load control block is close to No. two sliding rail joint sides；There is auricle, each auricle to pass through No. two connecting rods pair for No. two sliding block both sides
A No.1 sliding block should be connected；
It is provided with the through-hole to match with load control bar on No. two sliding rail connectors, is provided on load control block and load
One end of the threaded hole that adjusting rod matches, load control bar is polished rod, and the outer surface of rest part is threaded, load control
Bar is closed by the corresponding threaded holes of screw thread and load control block, and its smooth bar part is connected to the through-hole of No. two sliding rail connectors
Interior, load control bar is located at the surface of No. two sliding rails；The shaft shoulder is set between the polished rod and threaded portion of load control bar.
Advantages of the present invention：The present invention is directed to the demand of airplane cabin door lock reliability test, can simulate cabin door lock movement
It is loaded with lock ring load, while can solve the problems, such as that overall stiffness and single order dominant frequency existing for existing experimental rig are relatively low.This
Invention experimental rig, by reducing height, simplifies Path of Force Transfer, and increase the size of force transmission mechanism, makes its tool from integral form
There are low clearance, high rigidity and compared with higher order dominant frequency, while the experimental rig can realize simulation and the lock ring of cabin door lock motor function
The load of load, and there is smaller weight and volume.
The present invention converts the up and down motion of lock ring to by two sets of sliding track mechanisms the horizontal movement of No. two sliding blocks, to not
The downside installed load load maintainer in lock ring is needed, and load load maintainer is horizontally arranged on No. two sliding track mechanisms, by
The whole height of experimental rig can be reduced to about 250mm by this by about 430mm in the prior art, and cabin door lock passes through a monoblock
The thicker aluminium alloy plate of thickness is installed on shake table, and Path of Force Transfer is short and simple, and the overall stiffness of experimental rig greatly improves.
Disk spring has the advantages that rigidity is big, bearing capacity is strong, and the present invention is loaded using disk spring group simulation lock ring institute, compares
The normal spiral spring used in the prior art can substantially reduce the volume and weight of load load maintainer.
Description of the drawings
Fig. 1 is the overall structure diagram of the high rigidity experimental rig of the present invention in cabin door lock reliability test；
Fig. 2 is reinforcing plate, the attachment structure schematic diagram of cabin door lock mounting plate and bottom plate；
Fig. 3 is the attachment structure schematic diagram that lock ring adjusts unit and load control unit；
Fig. 4 is the attachment structure schematic diagram of load control unit；
Fig. 5 is the structural schematic diagram of load load maintainer；
Fig. 6 is the structural schematic diagram of No. two sliding blocks；
Fig. 7 is the structural schematic diagram of No. two sliding rail connectors；
Fig. 8 is the structural schematic diagram of cabin door lock.
Specific implementation mode
Specific implementation mode one：Illustrate present embodiment with reference to Fig. 1 to Fig. 8, hatch door is used for described in present embodiment
Lock reliability test high rigidity experimental rig, it include reinforcing plate 1, cabin door lock mounting plate 2, bottom plate 3, lock ring adjust unit and
Load control unit,
Lock ring adjust unit include No.1 sliding rail 4-1, two No.1 sliding block 4-2, two lock ring adjusting block 4-3, two one
Number sliding rail connector 4-4, center sliding rail connector 4-5, two No.1 connecting rod 4-6 and lock ring 4-7；
Load control unit include No. two sliding rail 5-1, No. two sliding block 5-2, disk spring group 5-3, load control bar 5-4,
Load control block 5-5, No. two sliding rail connector 5-6 and two No. two connecting rod 5-7；
Cabin door lock mounting plate 2 is fixed in a vertical manner on bottom plate 3, and the both sides of cabin door lock mounting plate 2 are respectively cabin door lock
Trial zone and Support；2 top of cabin door lock mounting plate is equipped with bolt hole, for installing cabin door lock 6；Cabin door lock 6 is mounted on hatch door
Lock trial zone；Reinforcing plate 1 is mounted on Support, and corresponding to 6 installed position of cabin door lock and cabin door lock mounting plate 2 and bottom plate
3 consolidations；
Lock ring adjusts unit and is arranged at cabin door lock trial zone with load control unit；Lock ring adjusts unit edge and cabin door lock
The parallel direction of mounting plate 2 is arranged on bottom plate 3, and installation direction of the load control unit on bottom plate 3 adjusts unit with lock ring
It is perpendicular；
The No.1 sliding rail connector 4-4 and be socketed in intermediate center sliding rail connector that No.1 sliding rail 4-1 is connected by its both ends
4-5 is connected to the installing zone of bottom plate 3 below 6 installation region of cabin door lock, two No.1 sliding block 4-2 and two lock ring adjusting block 4-3
It is socketed on No.1 sliding rail 4-1, two No.1 sliding block 4-2 are symmetrical arranged in the center both sides sliding rail connector 4-5, two lock ring tune
Locking nub 4-3 is located between No.1 sliding rail connector 4-4 and No.1 sliding block 4-2 and symmetrically sets in the center both sides sliding rail connector 4-5
It sets；One end of two No.1 connecting rod 4-6 is connected respectively the rotation connection end of a No.1 sliding block 4-2, two No.1 connecting rods
The other end of 4-6 is linked together by lock ring 4-7；The spiral shell in cabin door lock mounting plate 2 is bolted in the upper end of cabin door lock 6
On keyhole, the latch hook of cabin door lock 6 is matched with lock ring 4-7；
No. two sliding rail 5-1 and No. two sliding rail 5-1 are perpendicular, and one end is fixed in the centre bore of center sliding rail connector 4-5, separately
One end is connected to by No. two sliding rail connector 5-6 on bottom plate 3；No. two sliding block 5-2, disk spring group 5-3 and load control block 5-5
It is socketed in successively on No. two sliding rail 5-1, load control block 5-5 is close to No. two sides sliding rail connector 5-6；No. two both sides sliding block 5-2 tools
There are auricle, each auricle to be correspondingly connected with a No.1 sliding block 4-2 by a No. two connecting rod 5-7；
It is provided with the through-hole to match with load control bar 5-4 on No. two sliding rail connector 5-6, is set on load control block 5-5
It is equipped with the threaded hole to match with load control bar 5-4, one end of load control bar 5-4 is polished rod, the outer surface of rest part
It is threaded, load control bar 5-4 is closed by the corresponding threaded holes of screw thread and load control block 5-5, and its smooth bar part connects
It is connected in the through-hole of No. two sliding rail connector 5-6, load control bar 5-4 is located at the surface of No. two sliding rail 5-1；Load control bar 5-
The shaft shoulder is set between 4 polished rod and threaded portion.
Groove is arranged in region corresponding with the motion amplitude of lock ring 4-7 on cabin door lock mounting plate 2.
Bottom plate 3 is octagonal structure, and cabin door lock mounting plate 2 is fixed at the symmetrical shaft position of bottom plate 3.
Cabin door lock mounting plate 2 is trapezium structure, and the longer bottom surface of cabin door lock mounting plate 2 is mounted on bottom plate 3.
The shape of reinforcing plate 1 is right angle trigonometry side, two right-angle sides of reinforcing plate 1 respectively with cabin door lock mounting plate 2 and bottom
Plate 3 connects.
The outer end of load control bar 5-4 is rectangular end.
The side of No.1 sliding rail connector 4-4 is fixed on cabin door lock mounting plate 2.
The interface being fixedly connected with center sliding rail connector 4-5 is provided on bottom plate 3.
In present embodiment, No. two sliding rail 5-1, disk spring group 5-3, load control bar 5-4, load control block 5-5 and
No. two sliding rail connector 5-6 together form load load maintainer；Load control bar 5-4 is connected to load control block 5-5 and No. two
In sliding rail connector 5-6, the outer end of load control bar 5-4 is polished rod, and is extend into No. two sliding rail connector 5-6, adjacent with polished rod
Part be the shaft shoulder, the outer surface of rest part is threaded, by the position-limiting action of the shaft shoulder, as rotation load control bar 5-4,
Since the transmission of screw thread acts on, it can drive and be moved on the direction of transfer of load control block 5-5 threadingly, then drive disk spring group
5-3 further makes two No. two connecting rod 5-7 push two No.1 sliding block 4-2 movements, then passes through two No.1 connecting rod 4-6 and lock ring
4-7 finally loads power to cabin door lock 6, realizes the simulation to loaded load.
In present embodiment, cabin door lock is test specimen, is mounted on 2 top of mounting plate；Lock ring adjusts unit and is mounted on cabin door lock
Downside, the up and down motion for simulating lock ring；Load control unit is mounted on the side that lock ring adjusts unit, is used for lock ring
It moves up and down and is converted into the horizontal movement of No. two sliding block 5-2 in load control unit.Load charging assembly is mounted on No. two sliding rails
On 5-1, load passes sequentially through No. two sliding track mechanisms and No.1 sliding track mechanism is eventually transferred on lock ring.
The bolt hole being connect with shake table is provided on bottom plate 3 and for installing No.1 sliding track mechanism and No. two sliding track mechanisms
Mounting groove.The flat shape of cabin door lock mounting plate is trapezoidal, is provided with the spiral shell for installing cabin door lock and No.1 sliding track mechanism
Keyhole, and the groove for avoiding lock ring movement interference are fixedly arranged on the upside of bottom plate.The flat shape of reinforcing plate is right angle trigonometry
Shape consolidates respectively with cabin door lock mounting plate and bottom plate.Lock ring is located at below cabin door lock, and No.1 sliding rail is located at the underface of lock ring,
Two lock ring adjusting block 4-3 are mounted on No.1 sliding rail, are located at the outside of two No.1 sliding blocks, downward for limiting lock ring
The extreme lower position of movement.
Purpose according to the present invention, No. two sliding rails are located in the same horizontal plane with No.1 sliding rail, and are mutually hung down with No.1 sliding rail
Directly, No. two sliding blocks are mounted on No. two sliding rails, and are connect respectively with 2 No.1 sliding blocks by 2 No. two connecting rods.As a result, when two
When number sliding block is moved along No. two sliding rails, 2 No.1 sliding block constant speed counter motions make lock ring that can only move up and down, and meet simulation lock
The requirement of ring real motion rule.The outside of load control bar is mounted on No. two sliding rail connectors, and inside is installed to load control
In the threaded hole on block top.Position by spin load adjusting rod come control load adjusting block on No. two sliding rails, to control
The size of disk spring group pressure processed.The pressure of disk spring group passes sequentially through No. two sliding blocks, No. two connecting rods, No.1 sliding block and one
Number connecting rod is transmitted on lock ring.
As shown in Figure 1, the location of center sliding rail connector 4-5 is known as the middle part of experimental rig.
As shown in attached drawing 1 and attached drawing 2, bottom plate 3 and cabin door lock mounting plate 2 by 40mm thickness aluminium alloy plate overall processing
It forms.Two reinforcing plates 1 are formed by the aluminium alloy plate overall processing of 30mm thickness, are located on the upside of bottom plate 3, outside cabin door lock mounting plate 2
The position of side, and consolidated with the two.
In figure 6, the middle part of No. two sliding block 5-2 is the through-hole to match with No. two sliding rail 5-1, and both sides are and No. two connecting rods
The auricle that 5-7 is connected.In Fig. 5 and Fig. 7, No. two tops sliding rail connector 5-6 are provided with to be led to what load control bar matched
Hole, lower part are provided with the blind hole to match with No. two sliding rails.
The rectangular end of load control bar outermost end is convenient for rotation load control bar.
Claims (8)
1. a kind of high rigidity experimental rig for cabin door lock reliability test, which is characterized in that it includes reinforcing plate (1), cabin
Door lock mounting plate (2), bottom plate (3), lock ring adjust unit and load control unit,
Lock ring adjust unit include No.1 sliding rail (4-1), two No.1 sliding blocks (4-2), two lock ring adjusting blocks (4-3), two
No.1 sliding rail connector (4-4), center sliding rail connector (4-5), two No.1 connecting rods (4-6) and lock ring (4-7)；
Load control unit includes No. two sliding rails (5-1), No. two sliding blocks (5-2), disk spring group (5-3), load control bar (5-
4), load control block (5-5), No. two sliding rail connectors (5-6) and two No. two connecting rods (5-7)；
Cabin door lock mounting plate (2) is fixed in a vertical manner on bottom plate (3), and the both sides of cabin door lock mounting plate (2) are respectively hatch door
Lock trial zone and Support；Cabin door lock mounting plate (2) top is equipped with bolt hole, for installing cabin door lock (6)；Cabin door lock (6) is pacified
Mounted in cabin door lock trial zone；Reinforcing plate (1) is mounted on Support, and corresponding to cabin door lock (6) installed position and cabin door lock
Mounting plate (2) and bottom plate (3) consolidation；
Lock ring adjusts unit and is arranged at cabin door lock trial zone with load control unit；Lock ring adjusts unit and is installed along with cabin door lock
The parallel direction of plate (2) is arranged on bottom plate (3), and installation direction of the load control unit on bottom plate (3) adjusts single with lock ring
Member is perpendicular；
The No.1 sliding rail connector (4-4) and be socketed in intermediate center sliding rail connector that No.1 sliding rail (4-1) is connected by its both ends
(4-5) is connected to the installing zone of bottom plate (3) below cabin door lock (6) installation region, two No.1 sliding blocks (4-2) and two lock ring tune
Locking nub (4-3) is socketed on No.1 sliding rail (4-1), and two No.1 sliding blocks (4-2) are symmetrical in the both sides center sliding rail connector (4-5)
Setting, two lock ring adjusting blocks (4-3) are located at No.1 sliding rail connector (4-4) and one in the both sides center sliding rail connector (4-5)
Between number sliding block (4-2) and it is symmetrical arranged；One end of two No.1 connecting rods (4-6) is connected respectively a No.1 sliding block (4-
2) other end at rotation connection end, two No.1 connecting rods (4-6) is linked together by lock ring (4-7)；Cabin door lock (6) it is upper
End is bolted on the bolt hole of cabin door lock mounting plate (2), and the latch hook of cabin door lock (6) is matched with lock ring (4-7)；
No.1 sliding rail (4-1) and No. two sliding rails (5-1) are perpendicular, and one end is fixed in the centre bore of center sliding rail connector (4-5),
The other end is connected to by No. two sliding rail connectors (5-6) on bottom plate (3)；No. two sliding blocks (5-2), disk spring group (5-3) and load
Lotus adjusting block (5-5) is socketed in successively on No. two sliding rails (5-1), and load control block (5-5) is close to No. two sliding rail connectors (5-6)
Side；There is auricle, each auricle to be correspondingly connected with a No.1 by No. two connecting rods (5-7) and slide for No. two sliding block (5-2) both sides
Block (4-2)；
The through-hole to match with load control bar (5-4) is provided on No. two sliding rail connectors (5-6), on load control block (5-5)
It is provided with the threaded hole to match with load control bar (5-4), one end of load control bar (5-4) is polished rod, rest part
Outer surface is threaded, and load control bar (5-4) is closed by the corresponding threaded holes of screw thread and load control block (5-5), and its
Smooth bar part is connected in the through-hole of No. two sliding rail connectors (5-6), and load control bar (5-4) is being located at No. two sliding rails (5-1) just
Top；The shaft shoulder is set between the polished rod and threaded portion of load control bar (5-4).
2. the high rigidity experimental rig according to claim 1 for cabin door lock reliability test, which is characterized in that hatch door
It locks region corresponding with the motion amplitude of lock ring (4-7) on mounting plate (2) and groove is set.
3. the high rigidity experimental rig according to claim 1 for cabin door lock reliability test, which is characterized in that bottom plate
(3) it is octagonal structure, cabin door lock mounting plate (2) is fixed at the symmetrical shaft position of bottom plate (3).
4. the high rigidity experimental rig according to claim 1 for cabin door lock reliability test, which is characterized in that hatch door
It is trapezium structure to lock mounting plate (2), and the longer bottom surface of cabin door lock mounting plate (2) is mounted on bottom plate (3).
5. the high rigidity experimental rig according to claim 1 for cabin door lock reliability test, which is characterized in that reinforce
The shape of plate (1) is right angle trigonometry side, and two right-angle sides of reinforcing plate (1) connect with cabin door lock mounting plate (2) and bottom plate (3) respectively
It connects.
6. the high rigidity experimental rig according to claim 1 for cabin door lock reliability test, which is characterized in that load
The outer end of adjusting rod (5-4) is rectangular end.
7. the high rigidity experimental rig according to claim 1 for cabin door lock reliability test, which is characterized in that No.1
The side of sliding rail connector (4-4) is fixed on cabin door lock mounting plate (2).
8. the high rigidity experimental rig according to claim 1 for cabin door lock reliability test, which is characterized in that bottom plate
(3) interface being fixedly connected with center sliding rail connector (4-5) is provided on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611215048.XA CN106610338B (en) | 2016-12-26 | 2016-12-26 | High rigidity experimental rig for cabin door lock reliability test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611215048.XA CN106610338B (en) | 2016-12-26 | 2016-12-26 | High rigidity experimental rig for cabin door lock reliability test |
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| Publication Number | Publication Date |
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| CN106610338A CN106610338A (en) | 2017-05-03 |
| CN106610338B true CN106610338B (en) | 2018-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611215048.XA Active CN106610338B (en) | 2016-12-26 | 2016-12-26 | High rigidity experimental rig for cabin door lock reliability test |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110697073B (en) * | 2019-09-29 | 2023-03-14 | 中航通飞华南飞机工业有限公司 | Cabin door lock hook type selection test device |
| CN111583481B (en) * | 2020-04-21 | 2021-11-19 | 中国商用飞机有限责任公司 | Access control system for cockpit door of aircraft and aircraft |
| CN115031951B (en) * | 2022-08-12 | 2022-11-08 | 临沂朝日电子有限公司 | Multifunctional testing device for door and window hardware system |
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| US5083471A (en) * | 1990-06-25 | 1992-01-28 | Ehret John B | Method and apparatus for capturing torque for testing the rigidity and strength of torque transmission components |
| CN102530265A (en) * | 2012-02-15 | 2012-07-04 | 西北工业大学 | Device for testing reliability of cabin door lock for aircrafts |
| CN202939016U (en) * | 2012-11-17 | 2013-05-15 | 无锡忻润汽车安全系统有限公司 | Vehicle door lock travelling starting and push-pull force test device |
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| Publication number | Publication date |
|---|---|
| CN106610338A (en) | 2017-05-03 |
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