CN102351046B - Load-variable loading test device and method for detecting load by using same - Google Patents
Load-variable loading test device and method for detecting load by using same Download PDFInfo
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- CN102351046B CN102351046B CN2011101674347A CN201110167434A CN102351046B CN 102351046 B CN102351046 B CN 102351046B CN 2011101674347 A CN2011101674347 A CN 2011101674347A CN 201110167434 A CN201110167434 A CN 201110167434A CN 102351046 B CN102351046 B CN 102351046B
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Abstract
The invention discloses a load-variable loading test device and a method for detecting a load by using the same. The device comprises a top plate, a bottom plate, a hydraulic actuating cylinder, a friction slide rail and n pulley devices, wherein the friction slide rail is fixed on the ground; the hydraulic actuating cylinder is arranged in the friction slide rail; the n pulley devices make the top plate do vertical lifting motion relative to the bottom plate; n is more than or equal to 2 and is an even number; one end of each pulley device is connected with the hydraulic actuating cylinder, and the other end of each pulley device is connected with the top plate; a load sensor is arranged at the joint of each pulley device and the top plate; and the top plate is provided with a hinge hole for fixing an undercarriage. The actual loaded process of the undercarriage is simulated by load-variable loading, so that whether the undercarriage can protrude to a stipulated height in stipulated time or not is checked.
Description
Technical field
The present invention relates to a kind of projection dynamics test device, a kind of variable load load testing machine the invention still further relates to a kind of method that detects variable load simultaneously more specifically.
Background technology
The ship-board aircraft catapult-assisted take-off is to launching power stroke when terminal, launch and drag shuttle and piston ejector ram, ejector piston to break away from, the nose-gear energy disperser relies on self to store or the elastic potential energy of outside instantaneous input stretches rapidly, increase aircraft angle of attack and luffing speed in short time at the utmost point, thereby reach quick increase airplane ascensional force, make aircraft safety from the purpose of warship.
Lot of domestic and foreign scholar carried out system and deep research to the dynamics of projection process, but did not then relate to about projection performance how to check the nose-gear system and research how to carry out the projection test of nose-gear system.In the projection process, nose-gear and fuselage hinge-point place load change rapidly in the short time at the utmost point, and how correctly simulating this load is the key of carrying out the projection test.
Summary of the invention
The technical matters that the present invention solves provides a kind of variable load load testing machine, the true stand under load situation of simulation nose-gear in actual projection process; For this reason, the present invention also provides a kind of method of utilizing this variable load load testing machine test load.
For solving the problems of the technologies described above, the invention provides a kind of variable load load testing machine, comprise top board, base plate, hydraulic actuator and friction slide rail, described friction slide rail is fixed on the ground, and hydraulic actuator places the friction slide rail;
Also comprise making the relative base plate of described top board do vertical liter with n pulley gear of motion, wherein n 〉=2 and n are even number, and an end of described pulley gear links to each other with described hydraulic actuator, and the other end links to each other with top board;
The junction of described pulley gear and top board is provided with load transducer, also is provided with the hinge hole for fixed landing gear on the described top board.
A preferred embodiment of the present invention, pulley gear comprise the base plate pulley that is fixed on the base plate, and described hydraulic actuator links to each other with load transducer by the base plate pulley.
Another kind of preferred version of the present invention, described pulley gear comprise base plate pulley and the movable pulley between friction slide rail and base plate that is fixed on the base plate, and described hydraulic actuator links to each other with load transducer with the base plate pulley by movable pulley.
Another preferred version of the present invention, described pulley gear comprises the base plate pulley that is fixed on the base plate, the top board pulley that is arranged at the load transducer below and the movable pulley between friction slide rail and base plate, and described hydraulic actuator links to each other with load transducer with the top board pulley by movable pulley, base plate pulley.
The further preferred version of the present invention, described friction slide rail comprises slide rail and glidepath, described hydraulic actuator is between last slide rail and glidepath.
The present invention also provides a kind of method of utilizing this variable load load testing machine test load, may further comprise the steps:
Step 1: alighting gear is fixed between top board and the base plate, is specially three feets of alighting gear and top board by the hinge joint of hinge joint hole, the wheel of alighting gear places on the base plate;
Step 2: alighting gear is compressed to the desired location;
Step 3: make alighting gear do the projection campaign;
Step 4: by measuring the variation of alighting gear draft gear travel, judge the true stand under load situation in the alighting gear projection process.
The present invention compared with prior art has following remarkable advantage: by regulating hydraulic actuator output load, and then friction force between control hydraulic actuator and friction slide rail, the final realization loads the true stand under load situation of simulation nose-gear system in actual projection process to the real-time variable load of nose-gear system.
Description of drawings
Fig. 1 is the structural representation of variable load load testing machine among the embodiment one;
Fig. 2 is the structural representation of variable load load testing machine among the embodiment two;
Fig. 3 is the structural representation of variable load load testing machine among the embodiment three;
Drawing reference numeral explanation: 1 friction slide rail, 2 hydraulic actuators, 3 top boards, 4 base plates, 5 load transducers, 6 top board pulleys, 7 base plate pulleys, 8 movable pulleys, 9 alighting gears.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done to describe in further detail:
Variable load load testing machine of the present invention, comprise top board 3, base plate 4, hydraulic actuator 2 and friction slide rail 1, described friction slide rail 1 is fixed on the ground, hydraulic actuator 2 places friction slide rail 1, also comprise and make described top board 3 relative base plates 4 make four pulley gears that vertical liter will move, one end of described each pulley gear links to each other with described hydraulic actuator 2, the other end links to each other with top board 3, the junction of described pulley gear and top board 3 is provided with load transducer 5, also is provided with the hinge hole for fixed landing gear on the described top board 3.
Embodiment one
As shown in Figure 1, variable load load testing machine of the present invention, comprise top board 3, base plate 4, hydraulic actuator 2 and friction slide rail 1, described friction slide rail 1 comprises slide rail and glidepath, described hydraulic actuator 2 is between last slide rail and glidepath, also comprise and make described top board 3 relative base plates 4 make four pulley gears that vertical liter will move, described each pulley gear comprises the base plate pulley 7 that is fixed on 4 four drift angles of base plate, described top board 3 and base plate 4 be identical square, be respectively equipped with load transducer 5 on four drift angles of described top board 3, described hydraulic actuator 2 is provided with steel rope, and this steel rope is walked around base plate pulley 7 and linked to each other with load transducer 5.
Embodiment two
As shown in Figure 2, variable load load testing machine of the present invention, comprise top board 3, base plate 4, hydraulic actuator 2 and friction slide rail 1, described friction slide rail 1 comprises slide rail and glidepath, described hydraulic actuator 2 is between last slide rail and glidepath, also comprise and make described top board 3 relative base plates 4 make four pulley gears that vertical liter will move, described top board 3 and base plate 4 be identical square, be respectively equipped with load transducer 5 on four drift angles of described top board 3, described each pulley gear comprises base plate pulley 7 and the movable pulley 8 between friction slide rail 1 and base plate 4 that is fixed on 4 four drift angles of base plate, described hydraulic actuator 2 is provided with steel rope, and this steel rope is walked around base plate pulley 7 and linked to each other with load transducer 5 with movable pulley 8.
Embodiment three
As shown in Figure 3, variable load load testing machine of the present invention, comprise top board 3, base plate 4, hydraulic actuator 2 and friction slide rail 1, described friction slide rail 1 comprises slide rail and glidepath, described hydraulic actuator 2 is between last slide rail and glidepath, described top board 3 and base plate 4 be identical square, be respectively equipped with load transducer 5 on four drift angles of described top board 3, also comprise and make described top board 3 relative base plates 4 make four pulley gears that vertical liter will move, described each pulley gear comprises the base plate pulley 7 that is fixed on 4 four drift angles of base plate, be arranged at top board pulley 6 and the movable pulley between friction slide rail 1 and base plate 4 of load transducer 5 belows, described hydraulic actuator 2 is provided with steel rope, and this steel rope is walked around movable pulley 8, base plate pulley 7 links to each other with load transducer 5 with top board pulley 6.
A kind of method of utilizing this variable load load testing machine test load of the present invention may further comprise the steps:
Step 1: alighting gear 9 is fixed between top board 3 and the base plate 4, is specially: three feets of alighting gear 9 and top board 3 are by the hinge joint of hinge joint hole, and the wheel of alighting gear 9 places on the base plate 4;
Step 2: alighting gear 9 is compressed to the desired location;
Step 3: make alighting gear 9 do the projection campaign;
Step 4: by measuring the variation of alighting gear energy disperser two-part displacement difference about in the of 9, judge the true stand under load situation in the alighting gear 9 projection processes.
The present invention is by measuring the variation of alighting gear 9 draft gear travels, utilize load transducer 5 control hydraulic actuators 2 axial loads, under the certain condition of friction coefficient, hydraulic actuator 2 and 1 friction force of friction slide rail are changed according to precalculated curve, thereby reach the purpose that variable load loads, by the true stand under load process of variable load loading simulation alighting gear, thereby whether the check alighting gear can protrude into specified altitude at the appointed time.
Claims (7)
1. variable load load testing machine, it is characterized in that: comprise top board, base plate, hydraulic actuator and friction slide rail, described friction slide rail is fixed on the ground, and hydraulic actuator places the friction slide rail;
Also comprise n the pulley gear that makes the relative base plate of described top board do vertical displacement movement, wherein n 〉=2 and n are even number, and an end of described pulley gear links to each other with described hydraulic actuator, and the other end links to each other with top board;
The junction of described pulley gear and top board is provided with load transducer, also is provided with the hinge hole for fixed landing gear on the described top board.
2. a kind of variable load load testing machine according to claim 1, it is characterized in that: described pulley gear comprises the base plate pulley that is fixed on the base plate, described hydraulic actuator links to each other with load transducer on the top board by the base plate pulley.
3. a kind of variable load load testing machine according to claim 1, it is characterized in that: described pulley gear comprises the base plate pulley that is fixed on the base plate and the movable pulley between friction slide rail and base plate, and described hydraulic actuator links to each other with load transducer on the top board by movable pulley, base plate pulley successively.
4. a kind of variable load load testing machine according to claim 1, it is characterized in that: described pulley gear comprises the base plate pulley that is fixed on the base plate, is arranged at top board pulley and the movable pulley between friction slide rail and base plate of load transducer below, and described hydraulic actuator links to each other with load transducer on the top board by movable pulley, base plate pulley, top board pulley successively.
5. according to any described variable load load testing machine in the claim 1 to 4, it is characterized in that: described friction slide rail comprises slide rail and glidepath, and described hydraulic actuator is between last slide rail and glidepath.
6. a method of utilizing the described variable load load testing machine of claim 1 test load is characterized in that, may further comprise the steps:
Step 1: alighting gear is fixed between top board and the base plate;
Step 2: alighting gear is compressed to the desired location;
Step 3: make alighting gear do the projection campaign;
Step 4: by measuring the variation of two-part displacement difference up and down of alighting gear energy disperser, judge the true stand under load situation in the alighting gear projection process.
7. the method for a kind of variable load load testing machine test load according to claim 6, it is characterized in that: alighting gear is fixed between top board and the base plate in the described step 1, be specially: three feets of alighting gear and top board are by the hinge joint of hinge joint hole, and the wheel of alighting gear places on the base plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101674347A CN102351046B (en) | 2011-06-21 | 2011-06-21 | Load-variable loading test device and method for detecting load by using same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101674347A CN102351046B (en) | 2011-06-21 | 2011-06-21 | Load-variable loading test device and method for detecting load by using same |
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| CN102351046A CN102351046A (en) | 2012-02-15 |
| CN102351046B true CN102351046B (en) | 2013-08-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016151423A1 (en) * | 2015-03-23 | 2016-09-29 | Bombardier Inc. | Simulation of loads on aerostructures during aircraft assembly |
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| CN102944399B (en) * | 2012-11-08 | 2015-08-26 | 沈阳中之杰流体控制系统有限公司 | The tangential loading method of a kind of wheel rim |
| CN103048124A (en) * | 2012-12-10 | 2013-04-17 | 中国飞机强度研究所 | Pulley guide loading device |
| CN103029849B (en) * | 2012-12-12 | 2014-12-10 | 江西洪都航空工业集团有限责任公司 | Airplane overturn testing device and airplane overturn testing method |
| CN106932187B (en) * | 2017-03-27 | 2023-05-26 | 南京航空航天大学 | Device and method for testing protruding of nose landing gear of carrier-based aircraft |
| CN106965953B (en) * | 2017-03-31 | 2023-07-11 | 南京航空航天大学 | Undercarriage air-taking-out and air-taking-out dynamic load simulation device and loading method thereof |
| CN109823565B (en) * | 2018-10-26 | 2023-02-10 | 中国飞行试验研究院 | Mechanical fixing method for aircraft nose landing gear stroke |
| CN110104207B (en) * | 2019-05-09 | 2022-11-01 | 中国飞机强度研究所 | Differential loading method and system |
| CN110501146B (en) * | 2019-07-16 | 2021-03-26 | 中国飞机强度研究所 | Simulation and measurement device and measurement method for simulating lift force |
| CN112611673A (en) * | 2020-10-28 | 2021-04-06 | 南京航空航天大学 | Dynamic solubility test device and test method for oil-gas buffer of undercarriage |
| CN113682492B (en) * | 2021-07-05 | 2023-03-31 | 中国人民解放军总参谋部第六十研究所 | Helicopter undercarriage rigidity and damping test tool and test method |
| CN116929819B (en) * | 2023-09-18 | 2023-12-12 | 中国飞机强度研究所 | Device and method for testing protrusion of landing gear of carrier-based aircraft |
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| US6612152B2 (en) * | 1999-05-01 | 2003-09-02 | James E. Keaton | Lifting, servicing, and diagnosing automobiles |
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| CN102351046A (en) | 2012-02-15 |
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