CN112461184B

CN112461184B - Water rudder deflection angle measuring device

Info

Publication number: CN112461184B
Application number: CN202011250439.1A
Authority: CN
Inventors: 廖伟民; 刘志强; 冯宇; 刘开林; 李晓平
Original assignee: South China Aircraft Industry Co Ltd of China Aviation Industry General Aircraft Co Ltd
Current assignee: South China Aircraft Industry Co Ltd of China Aviation Industry General Aircraft Co Ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2022-05-27
Anticipated expiration: 2040-11-10
Also published as: CN112461184A

Abstract

The invention relates to a water rudder deflection angle measuring device, belonging to the field of aircraft system debugging; comprises a fixing mechanism (1), an RVDT sensor (2), a rotating platform (4), an adapting piece (5), 8 balancing balls (6), a guide mechanism a (8), a guide mechanism b (9) and a fixing rod (10); the invention can directly measure the deflection angle of the water rudder through the water rudder rotating shaft, has small volume, can be installed in a narrow space area in a cabin, and reduces the necessary precondition for measurement because the rotation of the rotating shaft is directly measured, and the attitude and the vibration of the airplane do not influence the measurement result. The device has the advantages of simple and ingenious structure, high measuring accuracy and efficiency, low manufacturing cost and easy popularization and application in various airplane factories and maintenance units.

Description

Water rudder deflection angle measuring device

Technical Field

The invention discloses a water rudder deflection angle measuring device, belongs to the field of aircraft system debugging, and relates to a water rudder deflection angle measuring device.

Background

At present, amphibious aircraft at home and abroad need to advance and turn on the water surface, therefore, rudders are designed, and the deflection angles of the rudders need to be calibrated after the rudders and control systems thereof are installed. Because the structure around the rudder is far away, no neutral point which can be used as a reference is used for positioning. The general method is to level the airplane, guide the rear edge point of the rudder to a drawing board in a plumb line mode, guide the drift angle position to the drawing board in the same method after the rudder rotates to the limit, and measure the distance between two points on the drawing board to obtain the deflection angle of the rudder. The method is suitable for small airplanes, but for large airplanes, after the airplanes are put down, the height of the rudder is high, the method of passing through the plumb line is not easy to implement, and the airplane is not allowed to perform other work when the airplane needs to be leveled and measured, so that the measurement result is influenced.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a device for measuring the deflection angle of a water rudder, which is fixed on a machine head structure frame and connected with a water rudder rotating shaft. The device is small, simple structure, ingenious, the simple operation, and measuring accuracy and efficient because the device need not the effect of bearing capacity, consequently except the fastener, all the other structures all adopt aluminum alloy material, reduce the weight of device.

The utility model provides a rudder deflection angle measuring device which characterized in that: comprises a fixing mechanism 1, an RVDT sensor 2, a rotating platform 4, an adapting piece 5, 8 balancing balls 6, two guide mechanisms a8, two guide mechanisms b9 and a fixing rod 10; the adaptor 5 is connected with a guide mechanism a8 and a guide mechanism b 9; the rotary table 4 is equidistantly separated from the adaptor 5 by 4 balancing balls 6; the concave cavity at the bottom of the adapter 5 is matched with the shape of the rudder rotating shaft and is mounted in a fitting manner; the other 4 balance balls 6 are arranged between the rotating platform 4 and the guide mechanism a8 and the guide mechanism b9, the positions of the balance balls 6 are limited by the guide mechanism a8 and the guide mechanism b9, and the balance balls slide among the three mechanisms during operation; the rotary table 4 is fixedly provided with the RVDT sensor 2, the fixing mechanism 1 is fixedly connected with the RVDT sensor 2 and the fixing rod 10, and the fixing rod 10 is fixedly connected with the airplane structure frame.

The rotating table 4, the adaptor 5, the guide mechanism a8 and the guide mechanism b9 are equidistantly limited by the balance balls 6.

The balance ball 6 between the rotating platform 4 and the adaptor 5 is limited by the guide mechanism 18 and the guide mechanism 29.

The balance ball 6 between the rotating platform 4 and the guide mechanisms a8 and b9 is limited in the movable position by the grooves on the guide mechanisms a8 and b 9.

The concave cavity at the bottom of the adapter 5 and the rudder rotating shaft rotate in a follow-up manner in a ratio of 1:1 completely.

The rotary table 4 is provided with the RVDT sensor 2, the rotary table 4 is provided with three long round bar holes, and the RVDT sensor 2 is arranged in the long round bar holes and is fixedly connected through bolts.

The fixing mechanism 1 is connected with the fixing rod 10 through threads.

The fixing mechanism 1 and the fixing rod 10 are both provided with long holes, and can be adjusted in two freedom directions through bolt fixation.

The notch of the rod end of the fixed rod 10 has the same inclination with the aircraft structure frame and is locked on two sides by two bolts.

The two guide mechanisms a (8) and the two guide mechanisms b (9) are connected with the adapting piece (5) at equal intervals.

The beneficial effects of the invention are:

the rudder deflection angle measuring device can directly measure the rudder deflection angle through the rudder rotating shaft, has small volume, can be installed in a narrow space area in a cabin, and reduces the necessary precondition for measurement because the attitude and vibration of the airplane do not influence the measurement result because the rotation of the rotating shaft is directly measured. The device has the advantages of simple and ingenious structure, high measuring accuracy and efficiency, low manufacturing cost and easy popularization and application in various airplane factories and maintenance units.

Drawings

FIG. 1 is a schematic three-dimensional structure of the present invention

FIG. 2 is a front view of the present invention;

FIG. 3 is a sectional view taken along line A-A of the present invention;

FIG. 4 is a top view of the present invention;

FIG. 5 is a schematic view of the threaded connection of the fixing mechanism 1 and the fixing rod 10 according to the present invention;

FIG. 6 is a schematic view of the connection between the fixing mechanism 1 and the fixing rod 10 of the present invention

FIG. 7 is a schematic view of the working conditions in the embodiment

Wherein: 1. fixing mechanism 2, RVDT sensor 3, fixing bolt 4, rotating platform 5, adapting piece 6, balancing ball 7, nut 8, guiding mechanism 19, guiding mechanism 210, fixing rod

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 4, a rudder deflection angle measuring device includes a fixing mechanism 1, an RVDT sensor 2, a rotating table 4, an adaptor 5, 8 balance balls 6, two guide mechanisms a8, two guide mechanisms b9, and a fixing rod 10; the adapter 5 is connected with the guide mechanism a8 and the guide mechanism b9 at equal intervals. The rotary table 4 is equidistantly separated from the adaptor 5 by 4 balancing balls 6; limited by a guide mechanism 18 and a guide mechanism 29. The concave cavity at the bottom of the adapter 5 is matched with the shape of the rudder rotating shaft and is installed in a fitting manner, and the concave cavity and the rudder rotating shaft rotate in a follow-up manner in a ratio of 1:1 completely; the other 4 balance balls 6 are arranged between the rotating platform 4 and the guide mechanism a8 and the guide mechanism b9, the positions of the balance balls 6 are limited by the grooves of the guide mechanism a8 and the guide mechanism b9, the balance and equidistant effects are achieved, and the balance balls slide among the three parts when in work; the rotary table 4 is fixedly provided with the RVDT sensor 2, the rotary table 4 is provided with three long round strip holes, and the RVDT sensor 2 is fixedly arranged in the long round strip holes through bolt connection. The fixing mechanism 1 is fixedly connected with the RVDT sensor 2 and the fixing rod 10, and the fixing rod 10 is fixedly connected with the airplane structure frame and keeps a state of no relative motion with the airplane structure frame.

As shown in fig. 5 and 6, there are two connection modes between the fixing mechanism 1 and the fixing rod 10, one is to provide a hole on the fixing mechanism 1, and one end of the fixing rod 10 is columnar and provided with a thread and is connected with the thread. And the other is that the fixing mechanism 1 and the fixing rod 10 are both provided with a long hole and are fixed by bolts, so that the adjustment in two freedom directions can be carried out.

As shown in fig. 7:

the water rudder deflection angle measuring device is characterized in that working conditions are adopted in the embodiment, one side of a rudder surface of the water rudder is provided with a fuselage mechanism skin, the other side of the rudder surface of the water rudder is provided with an in-cabin structure frame, the space is small, the water rudder deflection angle measuring device is installed on a water rudder rotating shaft, and a fixing rod is clamped on the structure frame.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a rudder deflection angle measuring device which characterized in that: comprises a fixing mechanism (1), an RVDT sensor (2), a rotating platform (4), an adapting piece (5), 8 balancing balls (6), two guiding mechanisms a (8), two guiding mechanisms b (9) and a fixing rod (10); the adaptor (5) is connected with a guide mechanism a (8) and a guide mechanism b (9); the rotating platform (4) is equidistantly separated from the adapting piece (5) through 4 balancing balls (6); the concave cavity at the bottom of the adapter (5) is matched with the shape of the rudder rotating shaft and is mounted in a fitting manner; the other 4 balance balls (6) are arranged between the rotating table (4) and the guide mechanisms a (8) and b (9), the positions of the balance balls (6) are limited by the guide mechanisms a (8) and b (9), and the balance balls (6) between the rotating table (4) and the guide mechanisms a (8) and b (9) slide between the rotating table (4) and the guide mechanisms a (8) and b (9) during work; the rotary table (4) is fixedly provided with the RVDT sensor (2), the fixing mechanism (1) is fixedly connected with the RVDT sensor (2) and the fixing rod (10), and the fixing rod (10) is fixedly connected with the airplane structure frame.

2. The rudder deflection angle measuring device according to claim 1, wherein: the rotating platform (4), the adapting piece (5), the guide mechanism a (8) and the guide mechanism b (9) are limited at equal intervals through the balance balls (6).

3. The rudder deflection angle measuring device according to claim 1, wherein: the balance ball (6) between the rotating platform (4) and the guide mechanisms a (8) and b (9) is limited at the movable position by the grooves on the guide mechanisms a (8) and b (9).

4. The rudder deflection angle measuring device according to claim 1, wherein: the concave cavity at the bottom of the adapter (5) and the rudder rotating shaft are completely 1:1 rotates with the movement.

5. The rudder deflection angle measuring device according to claim 1, wherein: the rotary table (4) is provided with the RVDT sensor (2), three long round holes are formed in the rotary table (4), and the RVDT sensor (2) is installed in the long round holes and fixedly connected through bolts.

6. The rudder deflection angle measuring device according to claim 1, wherein: the fixing mechanism (1) is connected with the fixing rod (10) through threads.

7. The rudder deflection angle measuring device according to claim 1, wherein: the fixing mechanism (1) and the fixing rod (10) are both provided with a long hole, and can be fixed through bolts to adjust the directions of two degrees of freedom.

8. The rudder deflection angle measuring device according to claim 1, wherein: the notch of the rod end of the fixing rod (10) has the same inclination with the aircraft structure frame and is locked on the two sides by two bolts.

9. The rudder deflection angle measuring device according to claim 1, wherein: the two guide mechanisms a (8) and the two guide mechanisms b (9) are connected with the adapting piece (5) at equal intervals.