CN109720568B

CN109720568B - Retractable rudder structure embedded in rudder

Info

Publication number: CN109720568B
Application number: CN201811342801.0A
Authority: CN
Inventors: 胡海波; 张石柱; 刘东辉; 谈言朋; 余修坤; 刘岩
Original assignee: R&d Institute Of China Aviation Industry General Aircraft Co ltd
Current assignee: R&d Institute Of China Aviation Industry General Aircraft Co ltd
Priority date: 2018-11-12
Filing date: 2018-11-12
Publication date: 2022-12-16
Anticipated expiration: 2038-11-12
Also published as: CN109720568A

Abstract

The invention relates to a retractable rudder of a seaplane, in particular to a retractable rudder structure embedded in a rudder. The retractable water rudder structure embedded in the rudder comprises a rudder (1) provided with a rudder beam (11) and a rib structure, a water rudder (2) which is arranged in the rudder (1) and can rotate up and down, and a hinge inhaul cable (3) which is arranged in the rudder (1) and controls the water rudder to retract. When the water rudder (2) starts to work, the hinge inhaul cable (3) is loosened, the water rudder (2) rotates downwards and reaches a working position, and then the heading of the airplane is controlled along with the rotation of the rudder (1). When the water rudder (2) finishes working, the hinge inhaul cable (3) is tightened to pull the water rudder (2) to receive the placement position in the rudder (1). According to the invention, the water rudder is embedded in the rudder, so that the space of a machine body is not occupied, and the normal use of the rudder and the appearance of an airplane are not influenced.

Description

Retractable rudder structure embedded in rudder

Technical Field

The invention relates to a retractable rudder of a seaplane, in particular to a retractable rudder structure embedded in a rudder.

Background

The efficiency of the water plane depending on the rudder is often not enough to meet the control requirement for course control of sailing and taking off and landing on the water surface, and a water rudder structure is additionally arranged to enhance the course control capability. Most of the existing hydroplane rudder structures are arranged at the lower part of a fuselage, and the rudder structure is controlled by an independent actuating device to deflect left and right, and cannot be folded, so that the appearance of the fuselage is influenced and the fuselage is easy to damage; the installation of the actuating device occupies valuable machine body space, and increases the weight and the manufacturing, using and maintaining cost.

Disclosure of Invention

In order to overcome the defects and shortcomings of the existing water rudder structure, the invention aims to provide a water rudder structure which can be folded and unfolded and does not need an additional actuating device.

In order to solve the problems in the prior art, the invention adopts the technical scheme that: a retractable water rudder structure embedded in a rudder is positioned in a rudder 1 provided with a rudder beam 11 and a rib structure, and comprises a water rudder 2 capable of rotating up and down and a hinge inhaul cable 3 for controlling the water rudder 2 to retract; when the water rudder 2 starts to work, the hinge inhaul cable 3 is loosened, the water rudder 2 rotates downwards under the self gravity and reaches a working position, and then the heading of the airplane is controlled along with the rotation of the rudder 1; when the water rudder 2 finishes working, the hinge inhaul cable 3 is tightened to pull the water rudder 2 to receive the placement position in the rudder 1.

As an improvement of the retractable water rudder structure embedded in the rudder, the water rudder 2 comprises a water rudder rotating shaft 21, a water rudder control surface 22 and a support arm 23, wherein the support arm 23 is fixed with the water rudder control surface 22 and can rotate around the water rudder rotating shaft 21 through a shaft hole at the end part.

As an improvement of the water rudder, a shoulder bush 24 is pressed on the end of the support arm 23 connected with the water rudder rotating shaft 21, and the shoulder bush 24 is used for preventing wear and ensuring coaxiality between the water rudder rotating shaft 21 and the support arm 23.

As a further improvement, a waterproof bushing 25 is arranged between the shoulder bushings 24.

As a further improvement of the retractable rudder structure embedded in the rudder according to the present invention, the rudder rotor shaft 21 is in the form of a bolt shaft, and is locked by a self-locking nut 211 and a cotter pin 212.

As a further improvement of the retractable water rudder structure embedded in the rudder, the rudder 1 is provided with

anti-collision rubber blocks

15 and 16 at the positions where the notches of the rudder beam 11 and the lower end rib 12 and the rudder 2 may collide, so as to protect the rudder 2 and the rudder 1 in the working and retracted states

As a further improvement of the retractable rudder structure embedded in the rudder according to the present invention, the rudder 1 is provided with a connection joint 17 and a limit bush 18 for mounting and positioning the rudder shaft 21.

As a further improvement of the retractable rudder structure embedded in the rudder according to the present invention, the rear ends of the lower end rib 12 and the rib 1 13 are fixedly connected by a rear end rib support 14.

Compared with the prior art, the retractable rudder structure embedded in the rudder has the advantages that: the water rudder 2 is positioned in the rudder 1, does not occupy valuable fuselage space, and does not influence the normal use of the rudder and the appearance of the airplane; when the water rudder works, the rudder 1 is deflected to drive the rudder to rotate to control the course of the airplane, so that one set of actuating system is saved, and the weight of the airplane body and the use and maintenance cost are reduced.

Drawings

Fig. 1 is a schematic structural view of a retractable rudder structure embedded in a rudder according to the present invention;

FIG. 2 is a schematic view showing a state where the rudder of FIG. 1 is lowered;

FIG. 3 is a schematic view of a rudder structure of a retractable rudder structure embedded in a rudder according to the present invention;

FIG. 4 isbase:Sub>A rotary enlarged sectional view A-A of FIG. 1;

fig. 5 is a rotary enlarged sectional view of B-B of fig. 3.

In the figure, 1 is a rudder; 11 is a rudder beam;

12 is a lower end rib; 13 is 1 rib;

14 is a rear rib support; 15 is an anti-collision rubber block;

16 is an anti-collision rubber block; 17 is a connecting joint;

18 is a bushing; 2 is a water rudder;

21 is a water rudder rotating shaft; 211 is a self-locking nut;

212 is a cotter pin; 22 is a rudder surface of a water rudder;

23 is a support arm; 24 is a shoulder bush;

25 is a waterproof lining; and 3, a hinge inhaul cable.

Detailed Description

The following description will discuss a specific embodiment of a retractable rudder structure embedded in a rudder according to the present invention with reference to the accompanying drawings.

Referring to fig. 1 and 3, the retractable rudder structure embedded in a rudder according to the present invention includes a rudder 1 having a rudder beam 11, a lower rib 12 and a rib 1 13, wherein the rudder 1 is connected to an aircraft tail by a hinge and has a control rod for controlling the left and right deflection thereof; the water rudder 2 is arranged in the rudder 1 and can deflect up and down around a water rudder rotating shaft 21; and the hinge inhaul cable 3 is connected with the water rudder 2 through a bolt.

Referring to fig. 3, the support arm 22 of the rudder 2 and the rudder surface 23 are connected by a rivet, and the support arm 22 is composed of two support arms on the left and right sides.

Further, as shown in fig. 5, a bushing 24 is pressed on the support arm 22 to reduce the wear between the rudder 2 and the rudder shaft 21 during rotation.

Preferably, a waterproof bushing 25 is installed between the support arms 22 to prevent the shaft 21 from being corroded.

Referring to fig. 1 and 4, the rudder 2 and the rudder 1 are connected through the rudder rotating shaft 21, and the rudder rotating shaft 21 is fixedly mounted on the left and right connecting supports 17 disposed on the skin of the rudder 1 through the self-locking nut 211 and the cotter pin 212.

Preferably, a limit bushing 18 is arranged between the rudder spindle 21 and the connecting support 17 to ensure that the rudder 2 keeps on the plane of symmetry during rotation without deflection and collision with the structure of the rudder 1.

More preferably, the rudder 1 is fitted with

rubber crash blocks

15 and 16 on the rudder beam 11 and on the lower end rib 12 for protecting the rudder 2 and the rudder 1 in the operating and stowed states.

Preferably, the lower end rib 12 and the 1 rib 13 are provided with notches large enough to avoid interference with the water rudder 2 in the movement area of the water rudder.

Preferably, in order to have enough strength of the structure after the notch opening, the lower end rib 12 and the 1 rib 13 are provided with a bending edge reinforcement at the notch opening, and the tips of the two are connected and reinforced by a lower end rib support 14.

The retractable rudder structure embedded in the rudder disclosed by the invention is characterized in that when the retractable rudder structure actually works: when the rudder 2 starts to work, the hinge inhaul cable 3 is loosened, the rudder 2 rotates downwards under the self gravity and reaches a working position, and then the heading of the airplane is controlled along with the rotation of the rudder 1; when the water rudder 2 finishes working, the hinge inhaul cable 3 is tightened to pull the water rudder 2 to receive the placement position in the rudder 1.

In conclusion, the water rudder 2 is embedded in the rudder 1, so that the space of a machine body is not occupied, and the normal use of the rudder 1 and the appearance of an airplane are not influenced; the water rudder 2 utilizes the deflection of the rudder 1 to drive the water rudder to rotate so as to control the course of the airplane, and a set of actuating system is saved.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides an embedded retractable rudder structure in rudder, its characterized in that: the steering device comprises a rudder (1) provided with a rudder beam (11) and a rib structure, a water rudder (2) which is arranged in the rudder (1) and can rotate up and down, and a hinge inhaul cable (3) which is arranged in the rudder (1) and controls the water rudder to be folded and unfolded; when the water rudder (2) starts to work, the hinge inhaul cable (3) is loosened, the water rudder (2) rotates downwards and reaches a working position, and then the heading of the airplane is controlled along with the rotation of the rudder (1); when the water rudder (2) finishes working, the hinge inhaul cable (3) is tightened to pull the water rudder (2) to receive the placement position in the rudder (1);

the water rudder (2) comprises a water rudder rotating shaft (21), a water rudder control surface (22) and a support arm (23), wherein the support arm (23) is fixed with the water rudder control surface (22) and can rotate around the water rudder rotating shaft (21) through a shaft hole at the end part; the water rudder (2) is placed to a working position under the action of gravity, and can be guaranteed to work normally by overcoming the resistance when the water surface slides.

2. A retractable rudder structure embedded in a rudder according to claim 1, characterized in that: shoulder bush (24) have been pressed at the tip of support arm (23) connection rudder pivot (21), shoulder bush (24) are used for the abrasionproof between rudder pivot (21) and support arm (23) and the axiality installation is guaranteed.

3. A retractable rudder structure embedded in a rudder according to claim 2, characterized in that: and a waterproof bushing (25) is arranged between the shoulder bushings (24).

4. A retractable rudder structure embedded in a rudder according to claim 1, characterized in that: the water rudder rotating shaft (21) is in a bolt shaft form and is prevented from loosening by a self-locking nut (211) and a split pin (212).

5. A retractable rudder structure embedded in a rudder according to claim 1, characterized in that: the rudder (1) is provided with anti-collision rubber blocks at the positions where notches of lower end ribs (12) and rudder beams (11) possibly collide with the water rudder (2) so as to protect the water rudder (2) and the rudder (1) in working and retracted states.

6. The retractable rudder structure embedded in a rudder according to claim 5, wherein: the rudder (1) is provided with a connecting joint (17) and a limiting bushing (18) for mounting and positioning the rudder rotating shaft (21).

7. The retractable rudder structure embedded in a rudder according to claim 5, wherein: the rear ends of the lower end rib (12) and the rib (13) 1 are fixedly connected through a rear end rib support (14).