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CN-121977783-A - Biax multi-angle wind tunnel test strutting arrangement

CN121977783ACN 121977783 ACN121977783 ACN 121977783ACN-121977783-A

Abstract

The invention discloses a double-shaft multi-angle wind tunnel test supporting device, and relates to the technical field of wind tunnel tests. The device includes the stand, and the bottom and the test section slewing bearing of stand are connected, and the top is connected with the bearing frame, rotates on the bearing frame to be connected with transmission branch, and transmission branch's one end is connected with actuating mechanism, and the other end is connected with unable adjustment base, and unable adjustment base includes mount pad interface, spherical hinge and model mount pad, and the mount pad interface is installed in transmission branch's tip, and the spherical hinge sets up on the mount pad interface, and the center round hole of model mount pad is connected with the spheroid part cooperation of spherical hinge. The supporting device provided by the invention adopts a structural form of a main support and an axial extension rod, is stable in structure and high in frequency due to the fact that the bottom is fixed, avoids the possibility of resonance with a wind tunnel foundation, is small and light in structural design, is beneficial to transfer, transportation and test installation due to the fact that each part is provided with a hoisting hole, and is wider in adaptability compared with a traditional supporting structure.

Inventors

  • SUN YINSHENG
  • FANG KAIWEN
  • GUO WENLI
  • Qiao Gaokun
  • Wu Mingkuo
  • CHEN JIE

Assignees

  • 中国机械总院集团郑州机械研究所有限公司

Dates

Publication Date
20260505
Application Date
20251209

Claims (8)

  1. 1. The utility model provides a biax multi-angle wind tunnel test strutting arrangement, its characterized in that, including stand (1), the bottom and the test section slewing bearing of stand (1) are connected, and the top is connected with bearing frame (4), rotate on bearing frame (4) and be connected with transmission branch (5), the one end of transmission branch (5) is connected with actuating mechanism, and the other end is connected with unable adjustment base (6), unable adjustment base (6) include mount pad interface (12), spherical hinge (13) and model mount pad (14), mount pad interface (12) install in the tip of transmission branch (5), spherical hinge (13) set up in on mount pad interface (12), the center round hole of model mount pad (14) with the sphere part cooperation of spherical hinge (13) is connected, is used for making model mount pad (14) can wind spherical hinge (13) rotate, release three angular displacement degrees of freedom.
  2. 2. The dual-shaft multi-angle wind tunnel test supporting device according to claim 1, wherein the driving mechanism comprises a servo motor (7), the output end of the servo motor (7) is connected with a speed reducer (8), and the output end of the speed reducer (8) is connected with the transmission supporting rod (5) through a coupler (9).
  3. 3. The dual-shaft multi-angle wind tunnel test supporting device according to claim 2, wherein a motor protection cover (2) is arranged on the outer side of the servo motor (7).
  4. 4. A dual-shaft multi-angle wind tunnel test supporting device according to claim 2, wherein one end of the bearing seat (4) close to the speed reducer (8) is provided with a maintenance cover plate (3).
  5. 5. The dual-shaft multi-angle wind tunnel test supporting device according to claim 4, wherein two cylindrical roller bearings (10) are arranged in the bearing seat (4), the two cylindrical roller bearings are respectively arranged at the left end and the right end of the bearing seat (4), one end of the transmission support rod (5) is arranged in the bearing seat (4), penetrates through the central holes of the two cylindrical roller bearings (10) and is connected with the coupling (9), and the other end of the transmission support rod extends to the outside of the bearing seat (4) and is connected with the mounting seat interface (12).
  6. 6. The dual-shaft multi-angle wind tunnel test supporting device according to claim 5, wherein a bearing locking mechanism (11) for preventing the cylindrical roller bearing (10) at the right end of the bearing seat (4) from moving is arranged at the boundary of the cylindrical roller bearing.
  7. 7. The dual-shaft multi-angle wind tunnel test supporting device according to claim 6, wherein the bearing locking mechanism (11) comprises a stop washer and a round nut which are sequentially arranged at the end part of the cylindrical roller bearing (10), and the stop washer and the round nut are sleeved on the transmission supporting rod (5).
  8. 8. The dual-shaft multi-angle wind tunnel test supporting device according to claim 1, wherein the bottom of the upright post (1) is connected with a test section slewing bearing through bolts, and the upper plane of the upright post (1) is connected with the bearing seat (4) through bolts.

Description

Biax multi-angle wind tunnel test strutting arrangement Technical Field The invention relates to the technical field of wind tunnel tests, in particular to a double-shaft multi-angle wind tunnel test supporting device. Background Wind tunnel test is an important ring for checking aerodynamics of aircrafts and proportion models thereof, and almost all aircrafts need to be subjected to strict wind tunnel test before trial flight. In order to ensure the accuracy of the data, a model supporting device is required to be designed for supporting the aircraft test model and realizing the adjustment of the pose of the model supporting device so as to simulate the kinematic and dynamic characteristics of the aircraft during actual flight. Wind tunnel aircraft model support devices are typically supported by blades or risers, single (double, triple) upright support devices, half-mould support devices, strap or wire support devices, belly or back support devices, parallel support devices, and the like. The principle is that a scaling model is arranged on a supporting device, linear displacement of the model is restrained, three angular displacements are released freely, and under the aerodynamic force, the aircraft model is driven to move in pitching, yawing, rolling and the like. The wind tunnel flight test supporting device is various and is influenced by various factors such as wind tunnel cross section, wind speed, wind tunnel opening, test type and the like. The method is applied to low-speed or open wind tunnel tests, and a wire support mode is mostly adopted. The wire support mode is easy to generate structural resonance in a high-speed wind tunnel test, is unfavorable for realizing real-time monitoring of pneumatic or motion parameters, and is generally suitable for large-scale low-speed open wind tunnels due to complex mechanical structure, huge volume and overlarge test consumption of the six-degree-of-freedom wind tunnel dynamic support device. Disclosure of Invention The invention mainly aims to provide a double-shaft multi-angle wind tunnel test supporting device so as to overcome the problems in the prior art. In order to solve the technical problems, the invention adopts the following technical scheme: The utility model provides a biax multi-angle wind tunnel test strutting arrangement, includes the stand, the bottom and the test section slewing bearing of stand are connected, and the top is connected with the bearing frame, it is connected with transmission branch to rotate on the bearing frame, transmission branch's one end is connected with actuating mechanism, and the other end is connected with unable adjustment base, unable adjustment base includes mount pad interface, spherical hinge and model mount pad, the mount pad interface install in transmission branch's tip, the spherical hinge set up in on the mount pad interface, the center round hole of model mount pad with the spheroid part cooperation of spherical hinge is connected, is used for making the model mount pad can wind the spherical hinge is rotatory, releases three angular displacement degrees of freedom. Further, the driving mechanism comprises a servo motor, the output end of the servo motor is connected with a speed reducer, and the output end of the speed reducer is connected with the transmission support rod through a coupler. Further, a motor protection cover is arranged on the outer side of the servo motor. Further, one end of the bearing seat, which is close to the speed reducer, is provided with a maintenance cover plate. Further, two cylindrical roller bearings are arranged in the bearing seat and are respectively positioned at the left end and the right end of the bearing seat, one end of the transmission supporting rod is positioned in the bearing seat, penetrates through the center holes of the two cylindrical roller bearings and is connected with the coupling, and the other end of the transmission supporting rod extends to the outer portion of the bearing seat and is connected with the mounting seat through an interface. Further, a bearing locking mechanism for preventing the cylindrical roller bearing at the right end of the bearing seat from moving is arranged at the boundary of the cylindrical roller bearing. Further, the bearing locking mechanism comprises a stop washer and a round nut which are sequentially arranged at the end part of the cylindrical roller bearing, and the stop washer and the round nut are sleeved on the transmission supporting rod. Furthermore, the bottom of the upright post is connected with the test section slewing bearing through a bolt, and the upper plane of the upright post is connected with the bearing seat through a bolt. Further, the device also comprises a motor controller, a control cabinet, a power line, a signal line, a sensor, an upper computer and a motion control program. Compared with the prior art, the invention has the following beneficial effects: the invention adopts the structure