CN111498143B - Weight deducting device and weight deducting method thereof - Google Patents
Weight deducting device and weight deducting method thereof Download PDFInfo
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- CN111498143B CN111498143B CN202010404493.0A CN202010404493A CN111498143B CN 111498143 B CN111498143 B CN 111498143B CN 202010404493 A CN202010404493 A CN 202010404493A CN 111498143 B CN111498143 B CN 111498143B
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000005484 gravity Effects 0.000 claims description 19
- 238000005303 weighing Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 208000016261 weight loss Diseases 0.000 claims 3
- 230000004580 weight loss Effects 0.000 claims 3
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 238000006467 substitution reaction Methods 0.000 description 2
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- 239000013585 weight reducing agent Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
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Abstract
The application belongs to the technical field of aircraft structure ground strength test, concretely relates to withhold heavy device includes: the loading actuating cylinder is used for connecting a piston rod to the fastened structure, and a cylinder body of the loading actuating cylinder is fixed so as to be capable of applying a test load and a loading direction fastening load to the fastened structure; the load direction weight deduction load is used for offsetting the component of the weight of the deducted structure in the application direction of the test load; the inclined weight deducting structure is connected to the weight deducting structure or the loading actuating cylinder so as to apply inclined weight deducting load to offset the weight of the loading actuating cylinder and the vertical component of the weight deducting structure in the application direction of the test load; in addition, relate to a deduction method based on above-mentioned deduction device implementation.
Description
Technical Field
The application belongs to the technical field of airplane structure ground strength tests, and particularly relates to a weight deducting device and a weight deducting method.
Background
In the ground strength test of the airplane structure, in order to obtain a real and effective test result, the airplane structure needs to be designed to carry out a relevant test under a 0g state, and therefore, the weight of the airplane structure, the weight of the loading actuator cylinder and other auxiliary loading equipment need to be deducted.
Currently, in the ground strength test of the aircraft structure, the weight is deducted mostly in a mode that the load actuator additionally applies a weight deducting load superposed to the test load, the weight deducting method only can deduct the weight in the loading direction of the load actuator, a good effect can be obtained when the loading direction of the load actuator is vertical, and when the loading direction of the load actuator and the vertical direction form a certain inclination angle, the vertical weight is difficult to deduct, so that the accuracy of the ground strength correlation test of the aircraft structure is influenced.
The present application has been made in view of the above-mentioned technical drawbacks.
It should be noted that the above background disclosure is only for the purpose of assisting understanding of the inventive concept and technical solutions of the present invention, and does not necessarily belong to the prior art of the present patent application, and the above background disclosure should not be used for evaluating the novelty and inventive step of the present application without explicit evidence to suggest that the above content is already disclosed at the filing date of the present patent application.
Disclosure of Invention
It is an object of the present application to provide a weight-reducing device and method thereof to overcome or alleviate at least one of the technical disadvantages of the known prior art.
The technical scheme of the application is as follows:
one aspect provides a weight-losing device comprising:
the loading actuating cylinder is used for connecting a piston rod to the fastened structure, and a cylinder body of the loading actuating cylinder is fixed so as to be capable of applying a test load and a loading direction fastening load to the fastened structure; the load direction weight deduction load is used for offsetting the component of the weight of the deducted structure in the application direction of the test load;
the inclined weight-deducting structure is connected to the weight-deducting structure or the loading actuating cylinder so as to apply inclined weight-deducting load to offset the vertical component of the weight of the loading actuating cylinder and the weight of the weight-deducting structure in the application direction of the test load.
According to at least one embodiment of the present application, the oblique buckling structure is used to be connected to the buckling point.
In accordance with at least one embodiment of the present application,
wherein,
f1 is the size of the oblique weight buckling load;
g1 is a vertical component of the weight of the fastened structure in the application direction of the test load;
g1 is a vertical component of the weight of the loading actuator cylinder in the application direction of the test load;
l1 is a force arm from the center of gravity of the buckled structure to a fixed point of the loading actuator cylinder body;
l2 is a force arm from the buckling point to a fixed point of the loading actuator cylinder body;
l2 is the force arm for loading the center of gravity of the actuating cylinder to a fixed point of the cylinder body.
According to at least one embodiment of the present application, F2= G2; wherein,
f2 is the weight deduction load in the loading direction;
g2 is a component of the weight of the buckled structure in the test load application direction.
According to at least one embodiment of the present application, the diagonal buckling structure includes:
and the oblique weight buckling rope is vertically arranged along the application direction of the test load, and one end of the oblique weight buckling rope is used for being connected to the weight buckled structure or the loading actuating cylinder.
According to at least one embodiment of the present application, the oblique buckling structure further includes:
the pulley block is matched with the oblique weight-buckling rope to change the trend of the oblique weight-buckling rope.
According to at least one embodiment of this application, slant knot heavy structure still includes:
and the oblique buckling weight block is connected with one end of the oblique buckling weight rope, which is far away from the buckled structure or the loading actuating cylinder, and the weight of the oblique buckling weight block is equal to the weight of the oblique buckling weight load.
Another aspect provides a method for reducing a weight, implemented based on any one of the above weight reducing devices, including:
determining the gravity center and the weight g of the loading actuator cylinder, and decomposing the weight g of the loading actuator cylinder into a component g1 vertical to the application direction of the test load and a component g2 along the application direction of the test load;
determining the gravity center and the weight G of the buckled structure, and decomposing the weight G of the buckled structure into a component G1 vertical to the application direction of the test load and a component G2 along the application direction of the test load;
applying a load-direction weighing load F2 through the load actuator cylinder to offset a component G2 of the weight G of the weighed structure along the test load application direction;
applying an oblique weight-deducting load F1 through the oblique weight-deducting structure so as to offset a component G1 of the weight G of the loading actuating cylinder in the vertical direction of the application direction of the test load and offset a component G1 of the weight G of the weighted structure in the vertical direction of the application direction of the test load.
According to at least one embodiment of the present application, the oblique buckling structure is used to connect to the buckling point;
l1 is a force arm from the center of gravity of the buckled structure to a fixed point of the loading actuator cylinder body;
l2 is a force arm from the buckling point to a fixed point of the loading actuator cylinder body;
l2 is the force arm for loading the center of gravity of the actuating cylinder to a fixed point of the cylinder body.
According to at least one embodiment of the present application, F2= G2.
Drawings
Fig. 1 is a schematic structural diagram of a weight fastening device provided in an embodiment of the present application;
wherein:
1-loading the actuator cylinder; 2-a buckled weight structure; 3-obliquely buckling a weight rope; 4-a pulley block; 5-oblique weight block.
Detailed Description
In order to make the technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail with reference to the accompanying drawings, and it should be understood that the specific embodiments described herein are only some of the embodiments of the present application, and are used for explaining the present application and not limiting the present application. It should be noted that, for convenience of description, only the parts related to the present application are shown in the drawings, other related parts may refer to general designs, and the embodiments and technical features in the embodiments in the present application may be combined with each other to obtain a new embodiment without conflict.
In addition, unless otherwise defined, technical or scientific terms used in the description of the present application shall have the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer", and the like used in the description of the present application, which indicate orientations, are used only to indicate relative directions or positional relationships, and do not imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed accordingly, and thus, should not be construed as limiting the present application. The use of "first," "second," "third," and the like in the description of the present application is for descriptive purposes only to distinguish between different components and is not to be construed as indicating or implying relative importance. The use of the terms "a," "an," or "the" and similar referents in the context of describing the application is not to be construed as an absolute limitation on the number, but rather as the presence of at least one. The use of the terms "comprising" or "including" and the like in the description of the present application is intended to indicate that the element or item preceding the term covers the element or item listed after the term and its equivalents, without excluding other elements or items.
Further, it is noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and the like are used in the description of the invention in a generic sense, e.g., connected as either a fixed connection or a removable connection or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected through the inside of two elements, and those skilled in the art can understand their specific meaning in this application according to the specific situation.
The present application is described in further detail below with reference to fig. 1.
One aspect provides a weight-losing device comprising:
a loading actuating cylinder 1, the piston rod of which is used for connecting to the fastened structure 2, and the cylinder of which is fixed so as to apply a test load and a loading direction fastening load to the fastened structure 2; the load direction weight deduction load is used for offsetting the component of the weight of the deducted structure 2 in the test load application direction;
the inclined weight-off structure is connected to the weight-off structure 2 or the loading actuating cylinder 1 so as to apply the inclined weight-off load to offset the vertical component of the weight of the loading actuating cylinder 1 and the weight of the weight-off structure 2 in the direction of applying the test load.
As for the weight deduction device disclosed in the above embodiments, it can be understood by those skilled in the art that the weight deduction of the weight of the buckled structure 2 and the weight of the loading actuator 1 is realized in the form of a combination of the loading actuator 1 and the oblique weight deduction structure, the weight of the buckled structure 2 and the weight of the loading actuator 1 are decomposed and combined along the direction in which the loading actuator 1 applies the test load to the buckled structure 2 and the vertical direction in which the test load is applied, the weight of the buckled structure 2 in the loading direction applied by the loading actuator 1 is offset by the weight of the buckled structure 2 in the application direction of the test load, and the weight of the loading actuator 1 in the oblique weight deduction direction applied by the oblique weight deduction structure 2 is offset by the weight of the loading actuator 1 and the weight of the buckled structure 2 in the vertical direction applied by the test load, and no additional deduction is needed since the weight of the loading actuator 1 in the direction of the loading actuator 1 is directly applied to the fixed point of the loading actuator 1.
With respect to the above-mentioned embodiments of the weight-reducing device, it can be understood by those skilled in the art that the weight-reducing device can be used in the ground strength test of the aircraft structure to make the aircraft structure in the 0g state for the related test, and in this case, the weight-reduced structure can include the aircraft structure itself and its auxiliary loading device.
In some alternative embodiments, the inclined weight structure is configured to be connected to a weight point, which may be designed on the part of the weight structure 2 or on the loading actuator 1 according to actual needs to achieve accurate weight reduction, preventing the weight from crossing different parts of the weight structure 2.
In some of the alternative embodiments, the first and second,
wherein it is present>
F1 is the size of the oblique weight buckling load;
g1 is a vertical component of the weight of the buckled structure 2 in the application direction of the test load;
g1 is a vertical component of the weight of the loading actuator cylinder 1 in the application direction of the test load;
l1 is a force arm from the gravity center of the buckled structure 2 to a fixed point of the cylinder body of the loading actuating cylinder 1;
l2 is a force arm from the weight-fastening point to the fixed point of the cylinder body of the loading actuating cylinder 1;
l2 is a force arm for loading the center of gravity of the actuating cylinder 1 to a fixed point of the cylinder body.
With respect to the weight-losing device disclosed in the above embodiments, it can be understood by those skilled in the art that the weight-losing device uses the fixed point of the cylinder of the loading actuating cylinder 1 as the supporting point, and utilizes the lever principle to apply the oblique weight-losing load perpendicular to the direction of applying the test load through the oblique weight-losing structure to offset the vertical components of the weight of the loading actuating cylinder 1 and the weight of the structure 2 to be deducted in the direction of applying the test load.
In some alternative embodiments, F2= G2; wherein,
f2 is the weight deduction load in the loading direction;
g2 is a component of the weight of the buckled structure 2 in the test load application direction.
With regard to the weight deduction device disclosed in the above embodiments, it can be understood by those skilled in the art that, since the component of the weight of the loading actuator 1 along the direction of applying the test load directly acts on the fixed point of the loading actuator 1, no additional deduction is needed, the load direction deduction load applied by the loading actuator 1 only needs to offset the component of the weight of the structure 2 to be deducted in the direction of applying the test load, even if the load direction deduction load F2 is equal to the component G2 of the weight of the structure 2 to be deducted in the direction of applying the test load.
In some optional embodiments, the oblique buckling structure includes:
and the inclined buckling weight rope 3 is vertically arranged along the application direction of the test load, and one end of the inclined buckling weight rope is used for being connected to the buckled structure 2 or the loading actuating cylinder 1.
In some optional embodiments, the oblique buckling structure further comprises:
and the pulley block 4 is matched with the oblique weight-buckling rope 3 to change the trend of the oblique weight-buckling rope 3.
In some optional embodiments, the oblique buckling structure further comprises:
and the oblique buckling weight block 5 is connected with one end of the oblique buckling weight rope 3, which is far away from the buckled structure 2 or the loading actuating cylinder 1, and the weight of the oblique buckling weight block is equal to the weight of the oblique buckling weight load.
Another aspect provides a method for reducing a weight, implemented based on any one of the above weight reducing devices, including:
determining the gravity center and the weight g of the loading actuator cylinder 1, and decomposing the weight g of the loading actuator cylinder 1 into a component g1 vertical to the application direction of the test load and a component g2 along the application direction of the test load;
determining the gravity center and the weight G of the buckled structure 2, and decomposing the weight G of the buckled structure 2 into a component G1 vertical to the application direction of the test load and a component G2 along the application direction of the test load;
applying a load-direction weighing load F2 through the load actuator cylinder 1 to offset a component G2 of the weight G of the weighed structure 2 in the test load application direction;
an oblique weight-off load F1 is applied through the oblique weight-off structure to offset a component G1 of the weight G of the loading actuating cylinder 1 in the vertical direction of the application direction of the test load and offset a component G1 of the weight G of the weight-off structure 2 in the vertical direction of the application direction of the test load.
In some optional embodiments, the oblique buckling structure is used for connecting to the buckling point;
L1 is a force arm from the gravity center of the buckled structure 2 to a fixed point of the cylinder body of the loading actuating cylinder 1;
l2 is a force arm from the weight-fastening point to the fixed point of the cylinder body of the loading actuating cylinder 1;
l2 is a force arm for loading the center of gravity of the actuating cylinder 1 to a fixed point of the cylinder body.
In some alternative embodiments, F2= G2.
As for the weight deduction method disclosed in the above embodiments, it can be understood by those skilled in the art that it can be implemented based on any of the above weight deduction devices, and this weight deduction method can be applied to any situation where the loading actuator cylinder 1 applies a test load in the range of 0 ° < α > 90 ° to the structure 2 to be deducted, where when α =0 °, the loading actuator cylinder 1 applies a horizontal test load to the structure 2 to be deducted, and at this time, the component of the weight of the mechanism 2 to be deducted in the direction of applying the test load is zero, and only the component of the weight of the loading actuator cylinder 1 and the component of the weight of the mechanism 2 to be deducted in the direction of applying the test load need to be offset by applying the oblique weight deduction load through the oblique structure; when the angle α =90 °, the loading actuator cylinder 1 applies a vertical test load to the weight structure 2, and at this time, the direction of the test load is in the vertical direction, and only the vertical load applied by the loading actuator cylinder 1 in the loading direction counteracts the vertical gravity of the weight structure 2.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
Having thus described the present application in connection with the preferred embodiments illustrated in the accompanying drawings, it will be understood by those skilled in the art that the scope of the present application is not limited to those specific embodiments, and that equivalent modifications or substitutions of related technical features may be made by those skilled in the art without departing from the principle of the present application, and those modifications or substitutions will fall within the scope of the present application.
Claims (10)
1. A weight loss device, comprising:
a loading actuator cylinder (1), the piston rod of which is connected to the fastened structure (2), and the cylinder of which is fixed so as to be able to apply a test load and a loading direction fastening load to the fastened structure (2); the load direction weight deduction load is used for offsetting the component of the weight of the deducted structure (2) in the test load application direction;
an inclined weight-off structure for connection to the weight-off structure (2) or the loading ram (1) to enable application of an inclined weight-off load to counteract a vertical component of the weight of the loading ram (1), the weight of the weight-off structure (2) in the direction of application of the test load.
2. The weight-losing device of claim 1,
the inclined buckling structure is used for being connected to the buckling point.
3. The weight-losing device of claim 2,
f1 is the size of the oblique buckling load;
g1 is a vertical component of the weight of the fastened structure (2) in the application direction of the test load;
g1 is the vertical component of the weight of the loading actuator cylinder (1) in the application direction of the test load;
l1 is a force arm from the gravity center of the buckled structure (2) to a fixed point of the loading actuating cylinder (1) cylinder body;
l2 is a force arm from the buckling point to a fixed point of the cylinder body of the loading actuating cylinder (1);
l2 is the arm of force from the center of gravity of the loading actuator cylinder (1) to the fixed point of the cylinder body.
4. The weight-losing device of claim 2,
f2= G2; wherein,
f2 is the load direction weight deduction load;
g2 is the component of the weight of the buckled structure (2) in the application direction of the test load.
5. The weight-losing device of claim 1,
the slant knot heavy structure includes:
and the oblique weight buckling rope (3) is vertically arranged along the application direction of the test load, and one end of the oblique weight buckling rope is used for being connected to the buckled structure (2) or the loading actuating cylinder (1).
6. The weighing apparatus of claim 5,
the slant knot heavy structure still includes:
and the pulley block (4) is matched with the oblique weight-buckling rope (3) to change the trend of the oblique weight-buckling rope (3).
7. The weight-losing device of claim 6,
the slant knot heavy structure still includes:
and the oblique buckling weight block (5) is connected with one end, far away from the buckled structure (2) or the loading actuating cylinder (1), of the oblique buckling weight rope (3), and the weight of the oblique buckling weight block is equal to the weight of the oblique buckling weight load.
8. A method for reducing a weight, implemented by the weight reducing apparatus according to any one of claims 1 to 7, comprising:
determining the gravity center and the weight g of the loading actuator cylinder (1), and decomposing the weight g of the loading actuator cylinder (1) into a component g1 vertical to the application direction of the test load and a component g2 along the application direction of the test load;
determining the gravity center and the weight G of the fastened structure (2), and decomposing the weight G of the fastened structure (2) into a component G1 vertical to the application direction of the test load and a component G2 along the application direction of the test load;
applying a load-direction weighing load F2 by the load ram (1) to counteract a component G2 of the weight G of the structure (2) being weighed in the direction of application of the test load;
applying an oblique weight-deducting load F1 through the oblique weight-deducting structure so as to offset a component G1 of the weight G of the loading actuating cylinder (1) in the vertical direction of the application direction of the test load and offset a component G1 of the weight G of the weight-deducting structure (2) in the vertical direction of the application direction of the test load.
9. The weight-loss method according to claim 8,
the inclined buckling structure is used for being connected to the buckling point;
l1 is a force arm from the gravity center of the buckled structure (2) to a fixed point of the loading actuating cylinder (1) cylinder body;
l2 is a force arm from the buckling point to a fixed point of the cylinder body of the loading actuating cylinder (1);
l2 is the arm of force from the center of gravity of the loading actuator cylinder (1) to the fixed point of the cylinder body.
10. The weight-loss method according to claim 8,
F2＝G2。
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010404493.0A CN111498143B (en) | 2020-05-13 | 2020-05-13 | Weight deducting device and weight deducting method thereof |
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| CN202010404493.0A CN111498143B (en) | 2020-05-13 | 2020-05-13 | Weight deducting device and weight deducting method thereof |
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| US9644789B2 (en) * | 2012-12-21 | 2017-05-09 | H. Schinkel Holding B.V. | Spring balanced support device |
| CN203391184U (en) * | 2013-06-07 | 2014-01-15 | 滁州市可欣机械科技有限公司 | Refrigerator foaming mould counterweight mechanism |
| CN105015796A (en) * | 2014-04-29 | 2015-11-04 | 中国飞机强度研究所 | Following weight-deducting pulley block system |
| CN104058101B (en) * | 2014-06-24 | 2016-06-08 | 中国飞机强度研究所 | A kind of normal direction load applying method in wing gross distortion situation |
| CN104318828B (en) * | 2014-10-10 | 2016-08-24 | 北京卫星制造厂 | A kind of zero gravity experimental system for Spatial Multi-Dimensional development mechanism |
| CN106275491B (en) * | 2015-05-29 | 2018-07-20 | 北京卫星环境工程研究所 | Large Spacecraft Ground zero-gravity separation test is equipped |
| CN206161433U (en) * | 2016-11-04 | 2017-05-10 | 宝鸡石油机械有限责任公司 | Assembly pulley formula pneumatic cylinder loading test device |
| RU2688505C1 (en) * | 2018-04-27 | 2019-05-21 | Акционерное общество "Государственный ракетный центр имени академика В.П. Макеева" | Test bench for investigation of aircraft systems serviceability under vacuum and weightlessness conditions |
| CN109580474B (en) * | 2018-11-05 | 2021-06-01 | 中国航空工业集团公司西安飞机设计研究所 | Test device and estimation method for friction coefficient of steel wire rope |
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