阅读说明：本技术 一种用于教学的风洞实验段支撑装置 (Wind tunnel experiment section supporting device for teaching ) 是由 陈婵娟 李跃东 郭昊宇 于 2021-08-18 设计创作，主要内容包括：本发明公开了一种用于教学的风洞实验段支撑装置。它包括位于风洞试验段内的飞机模型、称重装置以及安置在称重装置上的底座,底座上具有垂直设置的立座,立座的顶部设置有用于与飞机模型进行铰接的万向接头,底座上还设置有气压撑杆,飞机模型的升力能够直接利用称重装置进行测量。优点是：可以避免风洞实验时,这些机构对实验造成干扰；控制方式更加简单,操作更加便捷,使用可靠性更高且调节精度更高；提高了支撑的稳定性以及飞机模型动作的灵活性,尤其是锥形结构设计进一步降低了风洞实验时对实验造成的干扰,大幅度提高了试验结果的精确度；使气压撑杆和立座处于飞机模型同一中心线上,保持了平衡,进一步提高了使用的稳定性和可靠性。(The invention discloses a wind tunnel experiment section supporting device for teaching. It is including aircraft model, the weighing device that is located wind-tunnel test section and settle the base on the weighing device, has the vertical seat of perpendicular setting on the base, and the top of vertical seat is provided with and is used for carrying out articulated universal joint with aircraft model, still is provided with the atmospheric pressure vaulting pole on the base, and aircraft model's lift can directly utilize the weighing device to measure. The advantages are that: the interference of the mechanisms to the experiment can be avoided during the wind tunnel experiment; the control mode is simpler, the operation is more convenient, the use reliability is higher, and the adjustment precision is higher; the stability of the support and the flexibility of the action of the airplane model are improved, particularly, the interference on the experiment caused by the wind tunnel experiment is further reduced by the conical structure design, and the accuracy of the test result is greatly improved; the air pressure support rod and the vertical seat are positioned on the same central line of the airplane model, balance is kept, and the use stability and reliability are further improved.)

1. The utility model provides a wind-tunnel experiment section strutting arrangement for teaching, is including aircraft model (4), weighing device (1) that are located wind-tunnel experiment section (3) and settle base (2) on weighing device, its characterized in that: the aircraft model lifting device is characterized in that a vertical seat (5) which is vertically arranged is arranged on the base (2), a universal joint (6) which is hinged with an aircraft model is arranged at the top of the vertical seat (5), an air pressure strut (7) which is hinged with the aircraft model and used for enabling the aircraft model to change the attack angle is also arranged on the base (2), and the lifting force of the aircraft model (4) can be directly measured by using a weighing device.

2. The wind tunnel experimental section supporting device for teaching according to claim 1, wherein: the vertical seat (5) is of a hollow conical structure, and the airplane model (4) is hinged to the top point of the vertical seat through a universal joint.

3. A wind tunnel experiment section supporting device for teaching according to claim 1 or 2, characterized in that: an opening located at the bottom inlet part of the wind tunnel experiment section (3) is formed in the side wall of the vertical seat (5), and the air pressure support rod (7) is located in the vertical seat (5), is connected with the base and extends out of the vertical seat from the opening to be hinged with the airplane model.

4. The wind tunnel experimental section supporting device for teaching according to claim 3, wherein: the weighing device (1) and the base (2) are both positioned outside the wind tunnel experiment section (3).

5. A wind tunnel experiment section supporting device for teaching according to claim 1, 2 or 4, wherein: the air pressure support rod (7) is connected with the base through a connecting joint and threads.

6. The wind tunnel experimental section supporting device for teaching according to claim 5, wherein: the air pressure support rod (7) is a single-acting air cylinder.

7. The wind tunnel experimental section supporting device for teaching according to claim 1, 2, 4 or 6, wherein: the air pressure support rod (7) is provided with a hand pump connector connected with a hand pump.

8. The wind tunnel experimental section supporting device for teaching according to claim 7, wherein: the weighing device (1) is an electronic scale.

9. The wind tunnel experimental section supporting device for teaching according to claim 8, wherein: the supporting vertical seat (3) is fixedly arranged on the base (2) through a boss seat.

Technical Field

The invention relates to an auxiliary device of an air experiment device, in particular to a wind tunnel experiment section supporting device for teaching.

Background

The wind tunnel experiment section is an important component of a wind tunnel experiment table, experimental data and experimental results are directly influenced by installation of an experimental model, the existing wind tunnel experiment section for teaching is single in model installation form, complex in installation and not simple and clear in experimental results, the generation of aircraft lift force and the relation between the aircraft lift force and an attack angle cannot be well mastered in the process that students learn courses such as aerodynamics for the first time, and later, an applicant invents a wind tunnel experiment section model support named for teaching, and the invention patent with the patent number of 202022209174.2 meets the requirement of avoiding interference to experiments caused by auxiliary structures in the wind tunnel experiment through an angle-variable attack mechanism and a wind tunnel support rod which are installed on a support stand and are located in the experiment section of the experiment table, but the structure also has the problems of inconvenience in adjustment, low accuracy, poor use reliability and the like.

Disclosure of Invention

The invention aims to provide a wind tunnel experiment section supporting device for teaching, which has the advantages of ingenious structural design, convenience in adjustment and good use reliability, so that the teaching effect can be greatly improved.

In order to solve the technical problem, the wind tunnel experiment section supporting device for teaching comprises an airplane model, a weighing device and a base, wherein the airplane model, the weighing device and the base are positioned in a wind tunnel experiment section, the base is arranged on the weighing device, a vertical seat is vertically arranged on the base, a universal joint used for being hinged with the airplane model is arranged at the top of the vertical seat, an air pressure supporting rod which is hinged with the airplane model and used for changing the attack angle of the airplane model is also arranged on the base, and the lifting force of the airplane model can be directly measured by using the weighing device.

The vertical seat is of a hollow conical structure, and the airplane model is hinged to the top point of the vertical seat through a universal joint.

An opening located at the bottom inlet part of the wind tunnel experiment section is formed in the side wall of the vertical seat, and the air pressure support rod is located in the vertical seat, connected with the base and extends out of the vertical seat from the opening to be hinged with the airplane model.

The weighing device and the base are both located on the outer side of the wind tunnel experiment section.

The air pressure support rod is connected with the base through a connecting joint and threads.

The air pressure support rod is a single-acting cylinder.

The air pressure support rod is provided with a hand pump connector connected with a hand pump.

The weighing device is an electronic scale

The supporting vertical seat is fixedly arranged on the base through the boss seat.

The invention has the advantages that:

(1) most mechanisms such as the weighing device and the base are placed outside the wind tunnel, the height of the vertical seat is lower than that of the airplane model, and interference of the mechanisms on the experiment can be avoided during the wind tunnel experiment.

(2) The aircraft model is hinged through the vertical seat and the air pressure support rod to support and change the attack angle, the control mode is simpler, the operation is more convenient, the use reliability is higher, and the adjusting precision is higher.

(3) The vertical seat is of a hollow conical structure, the airplane model is hinged to the top point of the vertical seat through the universal joint, the stability of the support and the flexibility of the action of the airplane model are improved, particularly, the interference caused by the conical structure design during wind tunnel experiments is further reduced, and the accuracy of test results is greatly improved.

(4) Through standing seat and atmospheric pressure vaulting pole cooperation mounting structure, make the atmospheric pressure vaulting pole be in the center of standing the seat to make atmospheric pressure vaulting pole and stand the seat and be in on the same center line of aircraft model, kept balance, further improved stability and the reliability of using.

Drawings

FIG. 1 is a schematic structural view of a wind tunnel experiment section supporting device for teaching according to the present invention;

fig. 2 is a schematic structural view of the gas strut of the present invention.

Detailed Description

The wind tunnel experiment section supporting device for teaching of the invention is further described in detail with reference to the accompanying drawings and the detailed description.

As shown in the figure, the wind tunnel experiment section supporting device for teaching of the invention comprises an airplane model 4 positioned in a wind tunnel experiment section 3, a weighing device 1 and a base 2 of a steel structure arranged on the weighing device, wherein the weighing device 1 is an electronic scale, the electronic scale and the base 2 are both positioned outside the wind tunnel experiment section 3, the base 2 is provided with a vertical seat 5 which is vertically arranged, the vertical seat 5 is a hollow conical structure and extends into the wind tunnel experiment section 3, the conical structure design of the vertical seat can furthest interfere the experiment during the wind tunnel experiment, the base is provided with 4 bolt holes which are uniformly distributed near four corners, the bottom of the vertical seat 5 is provided with a boss seat, the boss seat is provided with four bolt holes around the center for connecting with the base together, therefore, the vertical seat 3 is fixedly arranged on the base 2 through the boss seat, the installation stability of the vertical seat is increased, the top of the vertical seat 5 is provided with a universal joint 6 for hinging with the airplane model, the aircraft model 4 is hinged on the top point of the vertical seat through a universal joint, the base 2 is also provided with an air pressure support rod 7 which is hinged with the aircraft model and used for changing the attack angle of the aircraft model, the change of the attack angle of the aircraft model is realized by stretching the air pressure support rod 7 and using the universal joint as a fulcrum, the change condition of the lift force of the aircraft model in an experimental stage is measured, electrons are called as an out-of-tunnel strain type power measuring instrument, the lift force acting on the aircraft model is measured, and therefore the lift force of the aircraft model 4 can be directly measured by using a weighing device.

Further, the atmospheric pressure vaulting pole 7 of saying passes through threaded connection through attach fitting and base, and the atmospheric pressure vaulting pole 7 of saying is the cylinder of single-action, makes the flexible end of cylinder flexible through pressure boost and decompression from this, in addition, is provided with the hand pump joint of being connected through hose and hand pump on the cylinder, can utilize the hand pump to pressurize the atmospheric pressure vaulting pole from this.

And furthermore, an opening positioned at the inlet part at the bottom of the wind tunnel experiment section 3 is formed in the side wall of the vertical seat 5, the air pressure support rod 7 is positioned in an inner cavity formed by a hollow conical structure of the vertical seat 5, is connected with the base through a connecting joint by utilizing threads and extends out of the opening to be hinged with the airplane model, and through the ingenious structural design, the air pressure support rod 7 is positioned at the center of the vertical seat 5, so that the air pressure support rod 7 and the vertical seat 5 are positioned on the same central line of the airplane model, the balance is kept, and the use stability and reliability are further improved.

When the airplane model is used, the airplane model is supported in the wind tunnel through the electronic scale, the base and the vertical seat, the lifting force of airflow in the wind tunnel acting on the airplane model can be measured by the electronic scale outside the tunnel, and the change of the attack angle of the airplane model can be realized by the extension and the shortening of the air pressure support rod.