CN103983444A - Vertical testing device for reliability test of aircraft landing gear door uplock - Google Patents
Vertical testing device for reliability test of aircraft landing gear door uplock Download PDFInfo
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- CN103983444A CN103983444A CN201410215944.0A CN201410215944A CN103983444A CN 103983444 A CN103983444 A CN 103983444A CN 201410215944 A CN201410215944 A CN 201410215944A CN 103983444 A CN103983444 A CN 103983444A
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- boiler
- lock ring
- door
- spring
- guide rod
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Abstract
The invention provides a vertical testing device for a reliability test of an aircraft landing gear door uplock. The vertical testing device is composed of a supporting mechanism, a simulated door structure and a driving device, wherein the door uplock to be tested, the simulated door structure and the driving device are all installed on the supporting mechanism, the supporting mechanism is connected with an external vibration table, the driving device drives the simulated door structure to move, and the simulated door structure comprises a lock ring, a lock ring supporting part, a simulated door frame and a belleville spring. The vertical testing device is small in size and low in weight, can be installed in an environment temperature test box and meet the weight requirement of the vibration table, can be matched with the vibration table to achieve vibration stress loading, can be matched with a hydraulic system to achieve work triggering of the door uplock to be tested, and can simulate aerodynamic force loading. The environment conditions and working conditions simulated by the device are pretty real, and the device has certain universality and can be used for the reliability test of door locks with similar principles. The vertical testing device is low in machining cost and low in testing cost.
Description
Technical field
The present invention relates to aircraft reliability test field, be specially a kind of vertical test unit for undercarriage hatch door uplock fail-test.
Background technology
Aircraft landing gear system comprise landing gear mechanism assembly, undercarriage door and actuator, upper the complication system of the next cabin door lock and aiding sensors and hydraulic control system composition, have that quality is large, principle is complicated, request for utilization high; Can this system normally work is to be related to that can aircraft finish the work on request and ensure safe essential condition, is to ensure the normal key position using of aircraft.Undercarriage hatch door uplock (hereinafter to be referred as hatch door uplock) is the critical product that is related to that can hatch door normally work, and is the critical product that affects Landing Gear System work.Hatch door uplock is made up of hydraulic actuator, mechanism member, signal transducer and shell etc. conventionally, working environment has the advantages that high and low temperature alternative changes, exists oscillating load, operating load alternately to change, job requirement is included under design conditions and normally works, the fault of the Flight Safety that do not make a difference.
Along with the continuous growth of industrial ability and request for utilization in recent years, start to move towards application by the hatch door uplock of traditional Aero-Space spring lock class mechanism evolution.Compared with traditional Aero-Space spring lock, this class new design liquid collecting pressure, machinery and Electronic Control, in one, can realize the functions such as passive triggering work, simplification system control logic, duty output in real time, and good integrity, have the simple feature of maintenance.For coordinating the work characteristics of undercarriage door circular-rotation, the movement locus that this series products using in aircraft is to target---being hatch door lock ring---requires as curve, and this requires also different compared with traditional mechanism.For ensureing that this type of novel product can meet the reliability requirement of life of product and function at work, and provide foundation for continuing research and development improvement product, must before product formally comes into operation, carry out fail-test.
Current problem is, existing undercarriage hatch door uplock reliability test requires to reach requirement to such product testing, conventionally do not there is driver part, can not under condition of work, trigger the mechanical hook-up of hatch door uplock, can not trigger this type of hatch door uplock work, thereby realize the relevant requirements of fail-test.
Summary of the invention
The object of the invention is: for meeting the requirement of the novel uplock fail-test of undercarriage hatch door, a kind of novel reliability test is provided, can consider multiple environmental factor, operating load and different designs operating mode are to the evolution of hatch door uplock reliability and the coupling influence effect in life-span, can realize the simulation of the motor function to hatch door uplock, can apply oscillating load to hatch door uplock simultaneously, simulation aerodynamic force load, the multiple stress such as high low temperature operating load, can carry out reliability testing to hatch door uplock according to the requirement of different designs operating mode, boiler-plate door uplock condition of work and working environment aboard more truly.
Technical scheme of the present invention is:
Described a kind of vertical test unit for undercarriage hatch door uplock fail-test, is characterized in that: be made up of supporting mechanism, boiler-plate door and drive unit;
Hatch door uplock, boiler-plate door and drive unit to be tested are installed on supporting mechanism, and supporting mechanism is connected with external vibration testing table; Arc guide barrel for limiting lock ring movement locus is also installed on supporting mechanism, and the slide rail sliding for boiler-plate door, Brake Block is installed on slide rail, in the time that boiler-plate door is subject to drive unit effect to move to Brake Block along slide rail, the lock ring in boiler-plate door triggers hatch door uplock work to be tested;
Boiler-plate door comprises lock ring, lock ring support component, boiler-plate door frame and disk spring; On boiler-plate door frame, sliding bearing is installed, for coordinating with the slide rail of installing on supporting mechanism; Lock ring support component comprises lock ring support, spring guide, guide rod sliding bearing; Lock ring one end and lock ring are rotatably assorted by lock pin, the other end and spring guide end are rotatably assorted by lock pin, guide rod sliding bearing, spring shim, disk spring and guide rod locating piece are installed on spring guide successively, spring guide can be along guide rod sliding bearing rectilinear motion, guide rod locating piece is fixedly connected with spring guide, disk spring two ends are retrained by guide rod locating piece and spring shim, and spring shim is subject to guide rod sliding bearing spacing; Guide rod sliding bearing is fixed on boiler-plate door frame.
Beneficial effect
Effect of the present invention is: this test unit volume is little, lightweight; Can be arranged in environmental temperature experiment case, and meet the weight requirement of shaking table; Coordinate shaking table, can realize the loading of vibration stress; Fluid,matching pressing system, the work that can realize experimental cabin door lock triggers; Can simulate the loading of aerodynamic force; The environmental baseline of this unit simulation and operating mode are comparatively true, and this device has certain versatility, can carry out the fail-test of principle of similitude cabin door lock; This test unit processing cost is lower, and experimentation cost is low.
Brief description of the drawings
Accompanying drawing 1 is stereographic map of the present invention;
Accompanying drawing 2 is test unit supporting construction decomposed views;
Accompanying drawing 3 is drive unit three-dimensional views;
Accompanying drawing 4 is connection diagrams of drive unit and supporting construction;
Accompanying drawing 5 is boiler-plate door schematic diagram;
Accompanying drawing 6 is main assemblage of spring schematic diagram of boiler-plate door
Accompanying drawing 7 is housing assembly schematic diagram of boiler-plate door
Accompanying drawing 8 is drive unit and boiler-plate door connection diagram
Accompanying drawing 9 is boiler-plate door and supporting construction connection diagram
In the accompanying drawings: 1: connect base; 2: primary load bearing plate; 3: assistant reinforcement muscle; 4: experimental cabin door lock fixed head; 5: front buttress brace; 6: rear guide groove; 7: front guide slot; 8: slide rail bearing; 9: slide rail; 10: upper Brake Block; 11: mount pad in pressurized strut; 12: mount pad under pressurized strut; 13: hydraulic actuator; 14: lock ring; 15: lock ring support; 16: lock pin; 17: guide groove bearing; 18: general short pin; 19: spring guide; 20: guide rod locating piece; 21: guide rod sliding bearing; 22: spring regulates pad; 23: disk spring; 24: inside casing upper plate; 25: inside casing side plate; 26: interior frame bottom plate; 27: linear slide bearing; 28: interior frame bottom plate contiguous block; 29: lower Brake Block.
Embodiment
Below in conjunction with specific embodiment, the present invention is described:
A kind of vertical test unit for undercarriage hatch door uplock fail-test in the present embodiment is made up of supporting mechanism, boiler-plate door and drive unit.
Hatch door uplock, boiler-plate door and drive unit to be tested are installed on supporting mechanism, and the installation site of hatch door uplock to be tested is identical with actual working state, and this supporting construction is also test unit and the connecting interface of testing shaking table simultaneously.
With reference to accompanying drawing 2, connecting base 1, primary load bearing plate 2 and assistant reinforcement muscle 3 and link together by welding manner, is the stressed main body of test unit, connects on base 1 and is processed with the bolt hole being connected with shaking table, by being connected with test shaking table, with analog vibration environment.Experimental cabin door lock fixed head 4, rear guide groove 6 are connected with primary load bearing plate 2 by bolt; Front buttress brace 5 is connected with assistant reinforcement muscle 3 by bolt; 7 of front guide slot are bolted in front buttress brace 5.Upper Brake Block 10, lower Brake Block 29 and slide rail bearing 8 also mode with bolts are connected with primary load bearing plate 2, are fixed with slide rail 9 on slide rail bearing 8.The above part has formed the supporting construction part of test unit.
Hatch door uplock to be tested is just arranged on primary load bearing plate with overtesting cabin door lock fixed head 4, and determines installation site by experimental cabin door lock fixed head 4.Supporting construction is not only for installation test cabin door lock, simultaneously also for boiler-plate door and drives structure provide installation site.In supporting construction, also comprise the arc guide barrel for limiting lock ring movement locus, i.e. front guide slot 7 and rear guide groove 6, this guide groove makes the lock ring in boiler-plate door move in test unit according to planned course.Upper Brake Block 10 in supporting construction plays crucial position-limiting action, in the time that boiler-plate door is subject to drive unit effect to move to upper Brake Block 10 along slide rail, lock ring in boiler-plate door triggers hatch door uplock work to be tested just, after this hatch door uplock to be tested continues to drive lock ring along guide groove movement, until reach upper lock position.
With reference to accompanying drawing 3, drive unit is mainly made up of hydraulic actuator and union piece, and in hydraulic actuator 13, pressurized strut, under mount pad 11 and pressurized strut, mount pad 12 interconnects.As shown in Figure 4, in pressurized strut, under mount pad 11 and pressurized strut, mount pad 13 is bolted on primary load bearing plate 2.These three parts have formed the drive unit part of test unit, are to realize the motion of boiler-plate door, complete the crucial drive part of experimental cabin door lock workflow.Hydraulic actuator is responsible for driving the motion of boiler-plate door, completes the function that triggers experimental cabin door lock, is the vitals of realizing this device work; Hydraulic actuator is connected with hydraulic system by hydraulic tube, and hydraulic system provides hydraulic-driven power for drives structure.Union piece is connected hydraulic actuator with supporting construction, also hydraulic actuator and boiler-plate door are linked together simultaneously.
Shown in accompanying drawing 5, boiler-plate door comprises lock ring, lock ring support component, boiler-plate door frame and disk spring, and this structure is to realize the key structure of the triggering of experimental cabin door lock, loading simulation aerodynamic loading and simulation lock ring movement locus.Lock ring and lock ring support component are the targets of experimental cabin door lock, in test load are directly passed to experimental cabin door lock.Disk spring assembly is for Simulated Aerodynamic Loads, and according to the designing requirement of experimental cabin door lock, disk spring is chosen accordingly and combined, and provides corresponding elastic force for Simulated Aerodynamic Loads under design conditions.Boiler-plate door part is that lock ring and lock ring support component and disk spring assembly provide support, and is connected again with supporting construction and drives structure simultaneously.Boiler-plate door is the core component of realizing this test unit correlation function.
As shown in Figure 7, inside casing upper plate 24, inside casing side plate 25 and interior frame bottom plate 26 utilize bolt and interior frame bottom plate contiguous block 28 to interconnect to form a whole; The side of inside casing side plate 25 is connected with linear slide bearing 27.In the time that test unit is worked, linear slide bearing 27 is realized and being slided up and down on slide rail 9, and the housing assembly shown in Fig. 7 is slided up and down, and completes the passive job requirement of setting out of experimental cabin door lock, and the power that housing assembly slides comes from the drive unit shown in Fig. 3.
As shown in Figure 6, lock ring support component and disk spring are the key structure parts of simulating aerodynamic force in boiler-plate door.Lock ring support component comprises lock ring support 15, spring guide 19, guide rod sliding bearing 21.Lock ring one end and lock ring are rotatably assorted by lock pin 16, and the other end and spring guide end are rotatably assorted by lock pin.Guide rod sliding bearing 21, spring shim 22, disk spring 23 and guide rod locating piece 20 are installed on spring guide successively, spring guide can be along guide rod sliding bearing rectilinear motion, guide rod locating piece is fixedly connected with spring guide, disk spring two ends are retrained by guide rod locating piece and spring shim, and spring shim is subject to guide rod sliding bearing spacing.Guide rod sliding bearing 21 is bolted on inside casing upper plate 24.Guide groove bearing 17 is installed on lock pin 16; Guide groove bearing 17 can slide in rear guide groove 6 and front guide slot 7, and this makes lock pin 16 and lock ring 14 according to movement locus motion given in advance, make the course of work of test unit meet testing requirements.In Fig. 8, the drive unit of test unit adopts the fixed mode being connected to link together with boiler-plate door; In Fig. 9, boiler-plate door can be realized and sliding up and down on the slide rail of the supporting construction of test unit 9, and this can complete lock trigger process and the lock ring decentralization process of unblanking of experimental cabin door lock, thereby meets the testing requirements of experimental cabin door lock.
In test is carried out, supporting construction is fixed in environment temperature control box, and is connected with test shaking table; Drive unit is connected with experimental liquid pressing system, according to the hydraulic flow process designing in advance, drives the work of boiler-plate door, realizes the triggering work of experimental cabin door lock; Boiler-plate door, according to the designing requirement of experimental cabin door lock, provides simulation aerodynamic force in the fail-test of experimental cabin door lock.
Claims (1)
1. for a vertical test unit for undercarriage hatch door uplock fail-test, it is characterized in that: formed by supporting mechanism, boiler-plate door and drive unit;
Hatch door uplock, boiler-plate door and drive unit to be tested are installed on supporting mechanism, and supporting mechanism is connected with external vibration testing table; Arc guide barrel for limiting lock ring movement locus is also installed on supporting mechanism, and the slide rail sliding for boiler-plate door, Brake Block is installed on slide rail, in the time that boiler-plate door is subject to drive unit effect to move to Brake Block along slide rail, the lock ring in boiler-plate door triggers hatch door uplock work to be tested;
Boiler-plate door comprises lock ring, lock ring support component, boiler-plate door frame and disk spring; On boiler-plate door frame, sliding bearing is installed, for coordinating with the slide rail of installing on supporting mechanism; Lock ring support component comprises lock ring support, spring guide, guide rod sliding bearing; Lock ring one end and lock ring are rotatably assorted by lock pin, the other end and spring guide end are rotatably assorted by lock pin, guide rod sliding bearing, spring shim, disk spring and guide rod locating piece are installed on spring guide successively, spring guide can be along guide rod sliding bearing rectilinear motion, guide rod locating piece is fixedly connected with spring guide, disk spring two ends are retrained by guide rod locating piece and spring shim, and spring shim is subject to guide rod sliding bearing spacing; Guide rod sliding bearing is fixed on boiler-plate door frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410215944.0A CN103983444B (en) | 2014-05-21 | 2014-05-21 | For the vertical experimental rig of undercarriage hatch door uplock reliability test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410215944.0A CN103983444B (en) | 2014-05-21 | 2014-05-21 | For the vertical experimental rig of undercarriage hatch door uplock reliability test |
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| CN103983444A true CN103983444A (en) | 2014-08-13 |
| CN103983444B CN103983444B (en) | 2016-05-25 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104163250A (en) * | 2014-08-19 | 2014-11-26 | 西北工业大学 | Reliability test device for aircraft landing gear cabin door lock system |
| CN105841951A (en) * | 2016-05-25 | 2016-08-10 | 西北工业大学 | Improved cabin door lock testing apparatus for aircraft undercarriage |
| CN106610338A (en) * | 2016-12-26 | 2017-05-03 | 西北工业大学 | High-stiffness test device for cabin door lock reliability test |
| CN107036745A (en) * | 2017-04-24 | 2017-08-11 | 西北工业大学 | Latch hook staring torque measurement apparatus and method for uplock reliability test |
| CN107084834A (en) * | 2017-04-21 | 2017-08-22 | 西北工业大学 | The uplock reliability test of lock ring lateral attitude adjustment can be realized |
| CN107161356A (en) * | 2017-06-26 | 2017-09-15 | 中国人民解放军第五七二工厂 | A kind of aircraft door lock technology parameter measuring apparatus |
| CN108709708A (en) * | 2018-03-22 | 2018-10-26 | 天津航天瑞莱科技有限公司 | A kind of vibration experiment of aircraft aileron actuator |
| CN108801617A (en) * | 2018-06-12 | 2018-11-13 | 西北工业大学 | A kind of load-measuring device for cabin door lock reliability test |
| CN109682686A (en) * | 2019-01-31 | 2019-04-26 | 中国工程物理研究院机械制造工艺研究所 | A kind of disk spring tension and compression testing device |
| CN109969428A (en) * | 2019-02-28 | 2019-07-05 | 西安生淼机电科技有限责任公司 | A kind of aircraft nose landing gear uplock reliability and static strength/rigidity integrated experiment device and method |
| CN113111437A (en) * | 2021-04-16 | 2021-07-13 | 中国航空综合技术研究所 | Reliability evaluation method for airplane motion mechanism with data fusion |
| CN113418690A (en) * | 2021-07-13 | 2021-09-21 | 江苏省特种设备安全监督检验研究院 | Static simulation test system and method for anti-falling device of lifting protection platform |
| CN114383934A (en) * | 2022-01-10 | 2022-04-22 | 中航飞机起落架有限责任公司 | Loading device and method for hook-and-loop lock ring test of landing gear |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104163250B (en) * | 2014-08-19 | 2016-08-24 | 西北工业大学 | A kind of reliability test for undercarriage cabin door lock system |
| CN104163250A (en) * | 2014-08-19 | 2014-11-26 | 西北工业大学 | Reliability test device for aircraft landing gear cabin door lock system |
| CN105841951A (en) * | 2016-05-25 | 2016-08-10 | 西北工业大学 | Improved cabin door lock testing apparatus for aircraft undercarriage |
| CN105841951B (en) * | 2016-05-25 | 2018-07-13 | 西北工业大学 | A kind of improved aircraft landing gear cabin door lock experimental rig |
| CN106610338A (en) * | 2016-12-26 | 2017-05-03 | 西北工业大学 | High-stiffness test device for cabin door lock reliability test |
| CN106610338B (en) * | 2016-12-26 | 2018-11-13 | 西北工业大学 | High rigidity experimental rig for cabin door lock reliability test |
| CN107084834A (en) * | 2017-04-21 | 2017-08-22 | 西北工业大学 | The uplock reliability test of lock ring lateral attitude adjustment can be realized |
| CN107036745B (en) * | 2017-04-24 | 2019-05-17 | 西北工业大学 | Latch hook staring torque measuring device and method for uplock reliability test |
| CN107036745A (en) * | 2017-04-24 | 2017-08-11 | 西北工业大学 | Latch hook staring torque measurement apparatus and method for uplock reliability test |
| CN107161356A (en) * | 2017-06-26 | 2017-09-15 | 中国人民解放军第五七二工厂 | A kind of aircraft door lock technology parameter measuring apparatus |
| CN107161356B (en) * | 2017-06-26 | 2023-11-03 | 中国人民解放军第五七二一工厂 | Aircraft cabin door lock technical parameter measuring device |
| CN108709708A (en) * | 2018-03-22 | 2018-10-26 | 天津航天瑞莱科技有限公司 | A kind of vibration experiment of aircraft aileron actuator |
| CN108801617A (en) * | 2018-06-12 | 2018-11-13 | 西北工业大学 | A kind of load-measuring device for cabin door lock reliability test |
| CN109682686B (en) * | 2019-01-31 | 2023-09-19 | 中国工程物理研究院机械制造工艺研究所 | Belleville spring tension and compression test device |
| CN109682686A (en) * | 2019-01-31 | 2019-04-26 | 中国工程物理研究院机械制造工艺研究所 | A kind of disk spring tension and compression testing device |
| CN109969428A (en) * | 2019-02-28 | 2019-07-05 | 西安生淼机电科技有限责任公司 | A kind of aircraft nose landing gear uplock reliability and static strength/rigidity integrated experiment device and method |
| CN109969428B (en) * | 2019-02-28 | 2024-03-29 | 西安生淼机电科技有限责任公司 | Test method of comprehensive test device for reliability and static strength/rigidity of upper lock of nose landing gear of airplane |
| CN113111437A (en) * | 2021-04-16 | 2021-07-13 | 中国航空综合技术研究所 | Reliability evaluation method for airplane motion mechanism with data fusion |
| CN113111437B (en) * | 2021-04-16 | 2023-07-21 | 中国航空综合技术研究所 | Data fusion type aircraft movement mechanism reliability assessment method |
| CN113418690A (en) * | 2021-07-13 | 2021-09-21 | 江苏省特种设备安全监督检验研究院 | Static simulation test system and method for anti-falling device of lifting protection platform |
| CN113418690B (en) * | 2021-07-13 | 2023-09-12 | 江苏省特种设备安全监督检验研究院 | Static simulation test system and test method for anti-falling device of lifting protection platform |
| CN114383934A (en) * | 2022-01-10 | 2022-04-22 | 中航飞机起落架有限责任公司 | Loading device and method for hook-and-loop lock ring test of landing gear |
| CN114383934B (en) * | 2022-01-10 | 2023-11-21 | 中航飞机起落架有限责任公司 | Landing gear hook ring lock ring test loading device and method |
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