CN102053002A - Drop test bed with speed controllable rotation driving mechanism - Google Patents
Drop test bed with speed controllable rotation driving mechanism Download PDFInfo
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- CN102053002A CN102053002A CN 201010579470 CN201010579470A CN102053002A CN 102053002 A CN102053002 A CN 102053002A CN 201010579470 CN201010579470 CN 201010579470 CN 201010579470 A CN201010579470 A CN 201010579470A CN 102053002 A CN102053002 A CN 102053002A
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- wheel
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- undercarriage
- test bed
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- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims abstract description 3
- 230000001360 synchronised effect Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 description 13
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
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Abstract
The invention discloses a drop test bed with a speed controllable rotation driving mechanism, which comprises a test bed rack, a hanging bracket and an undercarriage, wherein the hanging bracket is arranged in the test bed rack and can creep down along sliding ways of the test bed rack; and the undercarriage is fixed at the lower end of the hanging bracket. An electromotor is also arranged at the lower end of the hanging bracket. An electromotor belt pulley is connected to an output shaft of the electromotor. An airplane wheel belt pulley synchronous with an airplane wheel is arranged on the airplane wheel of the undercarriage, and is in transmission with the electromotor belt pulley through a belt. A travel switch is also arranged on the sliding way of the test bed rack, and controls the electromotor to stop when the airplane wheel is landed. The drop test bed with the speed controllable rotation driving mechanism has a light and compact structure, simple layout and reliable performance, and is convenient to operate.
Description
Technical field
The present invention relates to a kind of drop test facility, belong to a class test unit, can be applicable to undercarriage drop-test and tire test.
Background technology
The undercarriage drop-test is the key link of undercarriage design effort, regulates the impact damper pad parameter by test, improves buffering efficient, and whether check landing gear structure strength and stiffness reach designing requirement.The real motion process of undercarriage when undercarriage ground drop-test needs simulated aircraft to land, wherein very important one is the simulation of aircraft horizontal landing speed.Common analogy method has two kinds, and a kind of is to build high-speed track delivery scooter, and this equipment simulating method is near truth.But this equipment needs the place big, technical sophistication, and Installation and Debugging are difficulty relatively, makes experimentation cost significantly improve.The another kind of wheel rotating speed simulation that adopts on the column testing table promptly is inverted to its edge tangential velocity in advance with wheel before the test and reaches aircraft landing speed, hanging basket is thrown in again.This method analog case is basic near reality, and a kind of shortcoming of method before having overcome, so be used widely, band shifting method commonly used is to prepare a friction pulley, and pivoting friction wheel during test drives the wheel rotation by the friction force between friction pulley and the wheel, after the standby wheel speed reaches predetermined speed, the friction samsara is removed, and throws in the falling bodies system, finishes test.But also there is the shortcoming that is difficult to avoid in this band shifting method, at first poor for some time owing to withdrawing wheel tire colliding surface to from the friction samsara, inevitably there is the loss of wheel rotating speed, cause the contact to earth rotating speed of moment of wheel tire to be difficult to accurate control, accuracy of experimental results is brought influence.Secondly this method needs a cover hydraulic drive mechanism to ensure stretching out of friction pulley and returns and remove, and is higher to test parts orientation arrangement requirement.Also have when friction gearing is carried out, there is the transverse vibration problem in undercarriage.The transmission efficiency of last friction gearing is lower, and frictional heat makes the wheel tyre temperature raise, and also can influence test findings.
Summary of the invention
The object of the invention: the present invention is simple and compact for structure, easy for installation, and is with low cost, preferably resolves the tire that causes because of the wheel commentaries on classics degree loss problem that rotary speed precision is difficult to guarantee of contacting to earth, and improved test accuracy.
Technical solution of the present invention: a kind of drop test facility with controlled speed belt rotation mechanism, comprise experimental stand, being arranged on can be along the hanging basket of experimental stand slideway landing and the undercarriage that is fixed on the hanging basket lower end in the experimental stand, lower end at described hanging basket also is provided with a motor, on the output shaft of this motor, be connected with a motor pulley, the wheel of described undercarriage be provided with one with the synchronous wheel belt wheel of wheel, this wheel belt wheel and described motor pulley also are provided with one and control the travel switch that described motor stops when described wheel land by a belt gear on described experimental stand slideway.
Also be provided with a support under described hanging basket, be fixed with a belt box on this support, described belt is positioned at belt box.
Described wheel belt wheel by belt wheel be connected wheel hub and form, described connection wheel hub is fixed on wheel, described belt wheel is fixed on and connects on the wheel hub.
The controlled speed belt rotation mechanism of drop test facility of the present invention comprises motor, motor pulley, belt, belt wheel, connection wheel hub, tape drum and tape drum support.Wherein motor is installed on the hanging basket base plate, motor pulley is fixed on the motor shaft, connects wheel hub and is bolted on the wheel by the undercarriage wheel hub, and belt wheel is installed in and connects on the wheel hub, the belt two ends connect electrical machine belt pulley and wheel hub belt wheel respectively, by the rotation of motor rotating band motivation wheel.Treat that wheel colliding surface undercarriage impact damper is compressed, stroke shortens reduces electrical machine belt pulley and wheel center distance of belt wheel, and belt slack breaks away from belt wheel, and wheel loses driving force.When wheel contacted to earth, hanging basket touched travel switch, made to stop operating the drive motor outage, prevented that motor continues the influence of rotation to test findings in the process of the test.Tape drum is installed on the hanging basket base plate by support and pulling-on piece, and belt and belt wheel can freely rotate in the belt box, prevents from that belt from throwing away to hurt sb.'s feelings, and guarantees experimental safe.
Beneficial effect of the present invention: 1, simple and compact for structure, easy for installation, space hold is little, and is with low cost.2, effectively avoid wheel rotating speed loss in the process of the test, can accurately control the contact to earth rotating speed of moment of wheel tire, improved test accuracy.3, eliminated the transverse vibration problem of undercarriage in the friction-type band commentaries on classics method.4, band turns over journey does not have frictional heat, has avoided tyre temperature to raise to the influence of test findings.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Fig. 2 is undercarriage of the present invention and hanging basket connection diagram.
Fig. 3 wheel belt wheel synoptic diagram.
Fig. 4 connects wheel hub scheme of installation on wheel.
Number in the figure title: 1, motor, 2, electrical machine belt pulley, 3, the belt box, 4, belt, 5, connect wheel hub, 6, belt wheel, 7, connection strap, 8, bearing, 9, support, 10, the wheel belt wheel, 11, wheel, 12, undercarriage, 13, hanging basket, 14, the wheel hub bolt, 15, wheel hub, 16, undercarriage sectional fixture, 17, elevating mechanism, 18, slideway, 19, impact platform, 20, travel switch, 21, experimental stand
Embodiment:
The present invention is a kind of drop test facility with controlled speed belt rotation mechanism, comprises experimental stand, hanging basket and undercarriage.Motor 1 is installed on hanging basket 13 base plates by bolt, wheel belt wheel 10 is installed on undercarriage wheel 11, wheel belt wheel 10 by belt wheel 5 be connected wheel hub 6 and form, it is fixing by wheel hub bolt 14 to connect wheel hub 5, for easy for installation, install earlier and connect wheel hub 5, again belt wheel 6 is installed in and connects on the wheel hub 5, should guarantee electrical machine belt pulley 2 and belt wheel 6 parallel axes, belt 4 adopts conventional belt, hurt sb.'s feelings in order to prevent that belt 4 from relaxing to throw away, at the peripheral belt box 3 of installing of belt, belt box 3 is fixed on hanging basket 13 base plates by support 9.Motor energising belt wheel 2 rotates during test, drive wheel 11 rotations by belt 4, treat wheel 11 rotating speeds reach predetermined speed after, in experimental stand 21, throw in hanging basket 13, wheel 11 colliding surfaces until undercarriage, wheel 11 remains a constant speed to rotate under motor drives always and contacts to earth until tire in this process, so wheel 11 rotating speeds do not lose, has guaranteed the accuracy of wheel 11 rotating speeds.When wheel 11 contacts to earth, since ground impact effect, the compression of undercarriage impact damper, stroke shortens, and makes the centre distance of electrical machine belt pulley 2 and belt wheel 6 reduce, and belt 4 is lax with belt wheel 6 disengagings of making peace, and wheel 11 loses driving force.When wheel 11 contacted to earth, the travel switch 20 on the slideway 18 of hanging basket 13 shake-up experimental stands made to stop operating drive motor 1 outage, prevents that motor continues the influence of rotation to test findings in the process of the test.
Claims (3)
1. drop test facility with controlled speed belt rotation mechanism, comprise experimental stand (21), being arranged on can be along the hanging basket (13) of experimental stand slideway landing and the undercarriage (12) that is fixed on hanging basket (13) lower end in the experimental stand, it is characterized in that: also be provided with a motor (1) in the lower end of described hanging basket (13), on the output shaft of this motor (1), be connected with a motor pulley (2), the wheel (11) of described undercarriage (12) be provided with one with the synchronous wheel belt wheel (10) of wheel (11), this wheel belt wheel (10) and described motor pulley (2) be by a belt (4) transmission, also is provided with one and controls the travel switch (20) that described motor (1) stops when landing when described wheel (11) on described experimental stand slideway.
2. the drop test facility with controlled speed belt rotation mechanism according to claim 1, it is characterized in that: under described hanging basket, also be provided with a support (9), be fixed with a belt box (3) on this support (9), described belt (4) is positioned at belt box (3).
3. the drop test facility with controlled speed belt rotation mechanism according to claim 1 and 2, it is characterized in that: described wheel belt wheel (10) by belt wheel (5) be connected wheel hub (6) and form, described connection wheel hub (6) is fixed on wheel (11), and described belt wheel (5) is fixed on and connects on the wheel hub (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010579470XA CN102053002B (en) | 2010-12-09 | 2010-12-09 | Drop test bed with speed controllable rotation driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010579470XA CN102053002B (en) | 2010-12-09 | 2010-12-09 | Drop test bed with speed controllable rotation driving mechanism |
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| Publication Number | Publication Date |
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| CN102053002A true CN102053002A (en) | 2011-05-11 |
| CN102053002B CN102053002B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010579470XA Active CN102053002B (en) | 2010-12-09 | 2010-12-09 | Drop test bed with speed controllable rotation driving mechanism |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884484A (en) * | 2012-12-21 | 2014-06-25 | 中国直升机设计研究所 | Automatic delivery apparatus |
| CN104236881A (en) * | 2014-08-26 | 2014-12-24 | 中国直升机设计研究所 | Rigid damping testing device |
| CN105181287A (en) * | 2015-09-07 | 2015-12-23 | 南京航空航天大学 | Test device simulating arresting hook hitting deck and test method |
| CN105277354A (en) * | 2015-11-20 | 2016-01-27 | 高小秒 | A fixed wing aircraft landing gear testing mechanism |
| CN105445002A (en) * | 2015-11-13 | 2016-03-30 | 哈尔滨工业大学 | Airplane wheel rotation driving device |
| CN108716977A (en) * | 2018-05-07 | 2018-10-30 | 中国飞机强度研究所 | A kind of flexibility pose adjustment position control device |
| CN111232242A (en) * | 2020-02-28 | 2020-06-05 | 南京航空航天大学 | Aircraft landing gear buffer ultimate working temperature drop test device and test method thereof |
| RU214939U1 (en) * | 2022-08-09 | 2022-11-22 | Акционерное общество "Казанский вертолётный завод" (АО "Казанский вертолётный завод") | Bench for pile testing of tubular skid landing gear of helicopters |
| CN116902222A (en) * | 2023-09-15 | 2023-10-20 | 中国飞机强度研究所 | Belt rotating device and method suitable for single-wheel double-fork landing gear drop test of airplane |
| CN117141744A (en) * | 2023-10-31 | 2023-12-01 | 中国飞机强度研究所 | Dual-wheel landing gear course speed simulation test device in full-aircraft drop test |
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| CN2525472Y (en) * | 2002-02-09 | 2002-12-11 | 北京航空航天大学 | Three way displacement test device for aeroplane landing gear landing vibration test |
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| KR20100108991A (en) * | 2009-03-31 | 2010-10-08 | 한재도 | Test equipment and method of air vehicle landing gear |
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2010
- 2010-12-09 CN CN201010579470XA patent/CN102053002B/en active Active
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| CN2525472Y (en) * | 2002-02-09 | 2002-12-11 | 北京航空航天大学 | Three way displacement test device for aeroplane landing gear landing vibration test |
| KR20100084022A (en) * | 2009-01-15 | 2010-07-23 | 한국항공대학교산학협력단 | Impact and flight data analysis system for flight trainning airplane |
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| Title |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884484A (en) * | 2012-12-21 | 2014-06-25 | 中国直升机设计研究所 | Automatic delivery apparatus |
| CN103884484B (en) * | 2012-12-21 | 2016-08-10 | 中国直升机设计研究所 | A kind of automatic release device |
| CN104236881A (en) * | 2014-08-26 | 2014-12-24 | 中国直升机设计研究所 | Rigid damping testing device |
| CN105181287A (en) * | 2015-09-07 | 2015-12-23 | 南京航空航天大学 | Test device simulating arresting hook hitting deck and test method |
| CN105445002A (en) * | 2015-11-13 | 2016-03-30 | 哈尔滨工业大学 | Airplane wheel rotation driving device |
| CN105277354A (en) * | 2015-11-20 | 2016-01-27 | 高小秒 | A fixed wing aircraft landing gear testing mechanism |
| CN108716977A (en) * | 2018-05-07 | 2018-10-30 | 中国飞机强度研究所 | A kind of flexibility pose adjustment position control device |
| CN111232242A (en) * | 2020-02-28 | 2020-06-05 | 南京航空航天大学 | Aircraft landing gear buffer ultimate working temperature drop test device and test method thereof |
| CN111232242B (en) * | 2020-02-28 | 2022-10-11 | 南京航空航天大学 | Aircraft landing gear buffer ultimate working temperature drop test device and test method thereof |
| RU214939U1 (en) * | 2022-08-09 | 2022-11-22 | Акционерное общество "Казанский вертолётный завод" (АО "Казанский вертолётный завод") | Bench for pile testing of tubular skid landing gear of helicopters |
| CN116902222A (en) * | 2023-09-15 | 2023-10-20 | 中国飞机强度研究所 | Belt rotating device and method suitable for single-wheel double-fork landing gear drop test of airplane |
| CN116902222B (en) * | 2023-09-15 | 2023-12-12 | 中国飞机强度研究所 | Belt rotating device and method suitable for single-wheel double-fork landing gear drop test of airplane |
| CN117141744A (en) * | 2023-10-31 | 2023-12-01 | 中国飞机强度研究所 | Dual-wheel landing gear course speed simulation test device in full-aircraft drop test |
| CN117141744B (en) * | 2023-10-31 | 2024-01-30 | 中国飞机强度研究所 | Dual-wheel landing gear course speed simulation test device in full-aircraft drop test |
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| Publication number | Publication date |
|---|---|
| CN102053002B (en) | 2012-05-30 |
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