CN113044239A - Supporting structure of two-degree-of-freedom test bed - Google Patents
Supporting structure of two-degree-of-freedom test bed Download PDFInfo
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- CN113044239A CN113044239A CN201911373775.2A CN201911373775A CN113044239A CN 113044239 A CN113044239 A CN 113044239A CN 201911373775 A CN201911373775 A CN 201911373775A CN 113044239 A CN113044239 A CN 113044239A
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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
A supporting structure of a two-degree-of-freedom test bed comprises an oil tank mounting platform and a supporting frame, wherein the supporting frame is of a tetrahedral structure formed by an upper cross beam, a lower cross beam and supporting rods, a pitching rotating shaft is arranged between the lower cross beam and a foundation, a rolling rotating shaft of the test bed is formed between the upper cross beam and the oil tank mounting platform, and a pitching actuating cylinder and a rolling actuating cylinder are arranged in addition. The design simplifies the structure of the test bed, and has convenient construction and easy guarantee of installation precision. And the compound angle rotation of the test bed which can simultaneously control pitching/rolling can be realized, and the device is suitable for the test of a light-load tested system.
Description
Technical Field
The invention belongs to the technical field of aviation, and relates to a supporting structure of a two-degree-of-freedom test bed for a ground simulation test of an aircraft fuel system.
Background
The two-degree-of-freedom test bed is a test platform for ground simulation tests of an aircraft fuel system, has two-degree-of-freedom rotation functions of pitching and rolling, and has a pitching/rolling composite rotation function. The ground simulation test bed for the aircraft fuel system generally comprises a test piece mounting platform, a main body structure, a rotating mechanism, a driving element and the like. The test piece mounting platform is used for mounting a test piece and is also called an oil tank mounting platform, the support frame of the main body structure is a main stressed element, the rotating mechanism is a rotating shaft for realizing pitching/rolling rotation of the test bed, and the driving element is a power element for driving the test bed to rotate.
The main structure of the ground simulation test bed of the existing aircraft fuel system comprises a main upright post support, and is mainly suitable for a test system with a large load requirement, and the test bed has the advantages of high strength requirement, large space occupation, complex structure and strict strength requirement. The prior art does not have a proper two-degree-of-freedom test bed for fuel system tests of small airplanes, particularly small unmanned planes.
Disclosure of Invention
The application aims to provide a supporting structure of a two-degree-of-freedom test bed for a small airplane, particularly a small unmanned aerial vehicle fuel system test. The device is required to be capable of installing a tested system, has two free rotation requirements of pitching and rolling, has a rolling/pitching composite angle requirement, and meets the load requirement of a test piece. The test bed has the advantages of small load, tetrahedral main structure, novel and simple structure, small space occupation, convenient installation and construction, easy guarantee of precision and suitability for the test of the airplane fuel system with light load.
A supporting structure of a two-degree-of-freedom test bed comprises an oil tank mounting platform and a supporting frame and is characterized in that, the supporting frame comprises an upper crossbeam, a lower crossbeam and a supporting rod for connecting the upper crossbeam and the lower crossbeam, the upper crossbeam and the lower crossbeam are mutually vertical, the upper crossbeam, the lower crossbeam and the supporting rod form a tetrahedral structure, the lower crossbeam and a foundation are connected through a monaural dual-rotating shaft structure to form a pitching rotating shaft of the test bed, the upper crossbeam and an oil tank mounting platform are connected through a monaural dual-rotating shaft structure to form a rolling rotating shaft of the test bed, and a pitching actuating cylinder is arranged, the lower end of the upper beam is connected with the foundation through a single-lug double-rotating-shaft structure, the upper end of the upper beam is connected with one end of an upper beam through a single-lug double-rotating-shaft structure, a rolling actuating cylinder is further arranged, the lower end of the lower beam is connected with one end of the lower cross beam through a single-lug double-rotating-shaft structure, and the upper end of the lower beam is connected with the oil tank mounting platform through a single-lug double-rotating-shaft structure.
The support rods are four, the lower ends of two support rods are respectively connected to two sides of the same end of the lower cross beam, the two support rods are opened to form an included angle, the upper ends of the two support rods are respectively connected to one side of the upper cross beam, the lower ends of the other two support rods are respectively connected to two sides of the other end of the lower cross beam, the two support rods are also opened to form an included angle, the upper ends of the two support rods are respectively connected to the other side of the upper cross beam, and the upper cross beam, the lower cross beam and the four support rods form a.
One side end of the upper cross beam axially extends to form a cantilever relative to the tetrahedron structure, the upper end of the pitching actuating cylinder is connected with the end of the cantilever through a monaural dual-rotating shaft structure, and the lower end of the pitching actuating cylinder is connected with a foundation through a monaural dual-rotating shaft structure.
The two transverse rolling actuating cylinders are symmetrically arranged on two sides of the tetrahedron structure, the lower ends of the transverse rolling actuating cylinders are respectively connected with two ends of the lower cross beam, the upper ends of the transverse rolling actuating cylinders are respectively connected with two ends of a transverse girder of the oil tank mounting platform through a monaural dual-spindle structure, and the transverse girder of the oil tank mounting platform is connected with an upper cross beam through a monaural dual-spindle structure to form a transverse rolling spindle of the test bed.
The rotating shaft of the single-lug double-rotating-shaft structure connected with the upper end and the lower end of the transverse rolling actuating cylinder is parallel to the transverse rolling rotating shaft of the test bed.
The rotating shafts of the single-lug double-rotating-shaft structures at the upper end and the lower end of the pitching actuating cylinder are parallel to the pitching rotating shaft of the test bed.
The beneficial effect of this application lies in: the tetrahedron structure is formed by welding sectional materials, and comprises an upper beam and a lower beam, wherein the upper beam is provided with a transverse rolling shaft, the lower beam is provided with a pitching rotating shaft, and a support rod is arranged in the middle of the tetrahedron structure. The design simplifies the structure of the test bed, and has convenient construction and easy guarantee of installation precision. And the compound angle rotation of the test bed which can simultaneously control pitching/rolling can be realized, and the device is suitable for the test of a light-load tested system.
The present application is described in further detail below with reference to the accompanying drawings of embodiments.
Drawings
Fig. 1 is a schematic view of a support structure of the two-degree-of-freedom test stand of the present application.
The numbering in the figures illustrates: the structure comprises an oil tank mounting platform 1, a rolling rotating shaft 2, a pitching actuating cylinder 3, a single-lug double-rotating-shaft structure 4, a tetrahedron structure 5, a rolling actuating cylinder 6, a pitching rotating shaft 7, an upper cross beam 8, a lower cross beam 9, a supporting rod 10 and a foundation 11.
A supporting structure of a two-degree-of-freedom test bed comprises an oil tank mounting platform 1 and a supporting frame, and is characterized in that the supporting frame comprises an upper cross beam 8, a lower cross beam 9 and a supporting rod 10 connecting the upper cross beam 8 and the lower cross beam 9, the upper cross beam 8 and the lower cross beam 9 are mutually vertical, the upper cross beam 8, the lower cross beam 9 and the supporting rod 10 form a tetrahedral structure 5, the lower cross beam 9 and a foundation 11 are connected through a monaural dual-rotating-shaft structure 4 to form a pitching rotating shaft 7 of the test bed, the upper cross beam 8 and the oil tank mounting platform 1 are connected through the monaural dual-rotating-shaft structure 4 to form a rolling rotating shaft 2 of the test bed, a pitching actuating cylinder 3 is arranged, the lower end of the pitching actuating cylinder is connected with the foundation 11 through the monaural dual-rotating-shaft structure 4, the upper end of the pitching actuating cylinder is connected with one end of the upper cross beam 8 through the monaural dual-rotating-shaft structure 4, a horizontal, the upper end of the connecting rod is connected with the oil tank mounting platform 1 through a single-lug double-rotating-shaft structure 4.
The number of the support rods 10 is four, wherein the lower ends of two support rods 10 are respectively connected to two sides of the same end of the lower cross beam 9, the two support rods are opened to form an included angle, the upper ends of the two support rods are respectively connected to one side of the upper cross beam 8, the lower ends of the other two support rods 10 are respectively connected to two sides of the other end of the lower cross beam 9, the two support rods are also opened to form an included angle, the upper ends of the two support rods are respectively connected to the other side of the upper cross beam 8, and the upper cross beam 8, the lower cross beam 9 and the four support rods.
One side end of the upper cross beam 8 extends axially to form a cantilever relative to the tetrahedral structure 5, the upper end of the pitching actuating cylinder 3 is connected with the end of the cantilever through the monaural dual-rotating shaft structure 4, and the lower end of the pitching actuating cylinder 3 is connected with a foundation 11 through the monaural dual-rotating shaft structure 4.
The two rolling actuating cylinders 6 are symmetrically arranged on two sides of the tetrahedron structure 5, the lower ends of the rolling actuating cylinders are respectively connected with two ends of the lower cross beam 9, the upper ends of the rolling actuating cylinders are respectively connected with two ends of a transverse girder of the oil tank mounting platform 1 through the monaural dual-spindle structure 4, and the transverse girder of the oil tank mounting platform 1 is connected with the upper cross beam 8 through the monaural dual-spindle structure 4 to form the rolling spindle 2 of the test bed.
The rotating shaft of the single-lug double-rotating-shaft structure 4 connected with the upper end and the lower end of the transverse rolling actuating cylinder 6 is parallel to the transverse rolling rotating shaft 2 of the test bed.
The rotating shafts of the single-lug double-rotating-shaft structures at the upper end and the lower end of the pitching actuating cylinder 3 are parallel to the pitching rotating shaft 7 of the test bed.
In the implementation, the tetrahedron structure 5 is a main bearing structure of the test bed and is formed by welding section bars, wherein the roll rotating shaft 2 and the pitch rotating shaft 7 are components of the tetrahedron structure 5, the roll rotating shaft 2 is the upper end of the tetrahedron structure 5, and the pitch rotating shaft 7 is the lower end of the tetrahedron structure 5. The oil tank mounting platform 1 is connected with the roll rotating shaft 2 and is mounted on the upper portion of the four-side structure body 5. The rotation of the rack around the pitch rotating shaft 7 is realized by the driving of the pitch actuating cylinders 3, and the roll actuating cylinders 6 rotate along with the rotation. The piston rod at the top of the rolling actuator cylinder 6 is connected with the oil tank mounting platform 1, the bottom of the rolling actuator cylinder 6 is fixed with the tetrahedron structure 5, and the rack is driven by the rolling actuator cylinder 6 to rotate by taking the rolling rotating shaft 2 as an axis. Because the bottom of the roll rotating shaft 2 is fixed with the tetrahedral structure 5 and rotates along with the tetrahedral structure 5, the test bench can realize the compound angle rotation controlled by pitch/roll simultaneously.
Claims (7)
1. A supporting structure of a two-degree-of-freedom test bed comprises an oil tank mounting platform and a supporting frame and is characterized in that, the supporting frame comprises an upper crossbeam, a lower crossbeam and a supporting rod for connecting the upper crossbeam and the lower crossbeam, the upper crossbeam and the lower crossbeam are mutually vertical, the upper crossbeam, the lower crossbeam and the supporting rod form a tetrahedral structure, the lower crossbeam and a foundation are connected through a monaural dual-rotating shaft structure to form a pitching rotating shaft of the test bed, the upper crossbeam and an oil tank mounting platform are connected through a monaural dual-rotating shaft structure to form a rolling rotating shaft of the test bed, and a pitching actuating cylinder is arranged, the lower end of the upper beam is connected with the foundation through a single-lug double-rotating-shaft structure, the upper end of the upper beam is connected with one end of an upper beam through a single-lug double-rotating-shaft structure, a rolling actuating cylinder is further arranged, the lower end of the lower beam is connected with one end of the lower cross beam through a single-lug double-rotating-shaft structure, and the upper end of the lower beam is connected with the oil tank mounting platform through a single-lug double-rotating-shaft structure.
2. The two-degree-of-freedom test bed supporting structure of claim 1, wherein the number of the supporting rods is four, the lower ends of two supporting rods are respectively connected to two sides of the same end of the lower beam, the two supporting rods are opened at an included angle, the upper ends of the two supporting rods are respectively connected to one side of the upper beam, the lower ends of the other two supporting rods are respectively connected to two sides of the other end of the lower beam, the two supporting rods are also opened at an included angle, the upper ends of the two supporting rods are respectively connected to the other side of the upper beam, and the upper beam, the lower beam and the four supporting rods form a tetrahedron structure.
3. The support structure for a two-degree-of-freedom test bed according to claim 1 or 2, wherein one side end of the upper beam extends axially to form a cantilever relative to the tetrahedral structure, the upper end of the pitch actuator is connected with the cantilever end through a monaural-twin pivot structure, and the lower end of the pitch actuator is connected with the foundation through a monaural-twin pivot structure.
4. The support structure of a two-degree-of-freedom test bed as claimed in claim 1 or 2, wherein there are two rolling cylinders symmetrically installed on two sides of the tetrahedron structure, the lower ends of the rolling cylinders are respectively connected to two ends of the lower beam, the upper ends of the rolling cylinders are respectively connected to two ends of the transverse beam of the oil tank mounting platform through the monaural dual spindle structure, and the transverse beam of the oil tank mounting platform is connected to the upper beam through the monaural dual spindle structure to form the rolling spindle of the test bed.
5. The support structure for a two degree-of-freedom test bed of claim 4, wherein the axes of rotation of the monaural dual pivot structure connected to the upper and lower ends of the roll actuator are parallel to the roll axis of the test bed.
6. The support structure for a two degree-of-freedom test bed of claim 3, wherein the axes of rotation of the monaural and biradial pivot structures at the upper and lower ends of the pitch ram are parallel to the pitch axis of rotation of the test bed.
7. The support structure for a two degree-of-freedom test stand of claim 1, wherein lateral struts are provided between the struts of the tetrahedral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911373775.2A CN113044239A (en) | 2019-12-26 | 2019-12-26 | Supporting structure of two-degree-of-freedom test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911373775.2A CN113044239A (en) | 2019-12-26 | 2019-12-26 | Supporting structure of two-degree-of-freedom test bed |
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| CN113044239A true CN113044239A (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911373775.2A Pending CN113044239A (en) | 2019-12-26 | 2019-12-26 | Supporting structure of two-degree-of-freedom test bed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114524109A (en) * | 2021-07-07 | 2022-05-24 | 力姆泰克（北京）传动设备股份有限公司 | Multi-degree-of-freedom testing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205808682U (en) * | 2016-05-31 | 2016-12-14 | 中国航空工业集团公司西安飞机设计研究所 | A kind of crane torsion test device and there is its aircraft fuel oil ground system test |
| CN206544607U (en) * | 2017-01-18 | 2017-10-10 | 成都飞机设计研究所制造中心 | A kind of multiple freedom small-sized unmanned aerial vehicle testboard |
| CN207191481U (en) * | 2017-08-02 | 2018-04-06 | 顺丰科技有限公司 | A kind of unmanned plane is tethered at test platform |
| KR20180131713A (en) * | 2017-05-31 | 2018-12-11 | (주)에이알웍스 | Multi-Copter Ground Verification Test System and Method of 6 Degree of Freedom |
| CN208373767U (en) * | 2018-02-22 | 2019-01-15 | 西安沃祥航空科技有限公司 | A kind of multiple degrees of freedom shaking platform |
-
2019
- 2019-12-26 CN CN201911373775.2A patent/CN113044239A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205808682U (en) * | 2016-05-31 | 2016-12-14 | 中国航空工业集团公司西安飞机设计研究所 | A kind of crane torsion test device and there is its aircraft fuel oil ground system test |
| CN206544607U (en) * | 2017-01-18 | 2017-10-10 | 成都飞机设计研究所制造中心 | A kind of multiple freedom small-sized unmanned aerial vehicle testboard |
| KR20180131713A (en) * | 2017-05-31 | 2018-12-11 | (주)에이알웍스 | Multi-Copter Ground Verification Test System and Method of 6 Degree of Freedom |
| CN207191481U (en) * | 2017-08-02 | 2018-04-06 | 顺丰科技有限公司 | A kind of unmanned plane is tethered at test platform |
| CN208373767U (en) * | 2018-02-22 | 2019-01-15 | 西安沃祥航空科技有限公司 | A kind of multiple degrees of freedom shaking platform |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114524109A (en) * | 2021-07-07 | 2022-05-24 | 力姆泰克（北京）传动设备股份有限公司 | Multi-degree-of-freedom testing device |
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