Constant-speed telescoping mechanism applied to variable-sweepback aircraft

Abstract

The invention discloses a constant-speed telescopic structure applied to a variable-sweepback aircraft. The constant-speed telescopic structure comprises an outer wing, an inner wing, an outer wing sliding groove, an inner wing sliding groove, a lead screw module and a push rod mechanism. The inner wing is fixed in the outer wing, and when the lead screw module reciprocates at a constant speed, the inner wing and the outer wing are matched with each other through the sliding groove and the cylindrical pin to realize action; the push rod mechanism is composed of two sections of long rods which are arranged in parallel, one end of each long rod is fixed to a sliding table of the lead screw module, the other end of each long rod is matched with sliding grooves of the outer wing and the inner wing, the outer wing is designed to be spliced with two sections of linear sliding grooves with special angles, and the inner wing is designed to be spliced with linear sliding grooves and special curve sliding grooves. And the push rods with corresponding angles are driven to move along the sliding chutes of the outer wing and the inner wing, so that the outer wing and the inner wing rotate and extend out along the sliding rails at constant speed. The constant-speed telescopic mechanism converts constant-speed linear motion into constant-speed rotary motion through mutual cooperation of specially designed sliding grooves, the structural design is simple, and functions are achieved quickly, efficiently and accurately.

Description

Technical Field

[0001] The invention belongs to the field of aerospace technology, and in particular relates to a uniform-speed telescopic structure applied to a variable-sweep aircraft. Background Art

[0002] During the flight of variable-sweep wings, when the main wing is opened to the limit, the rear half of the wing will extend out of the fuselage. At this time, the wing is in a cantilever beam state, which will greatly reduce the stability and life of the flying wing, and flight safety is difficult to guarantee. On the one hand, the wing is subjected to great aerodynamic forces in all directions, and the extended end of the wing in the cantilever beam state will be greatly deformed, and the friction resistance will also increase when it is retracted, and the wing is more likely to deform and break; on the other hand, high-pressure air will enter the fuselage through the receiving groove on the wing, destroying the internal electronic components and causing the aircraft to not work properly. In order to improve the performance of the flying wing, the inner wing can be designed inside the outer wing, and the extended part of the inner wing can be reinforced by strengthening the fixation of the outer wing. The design of a simple structural machine can reduce many control requirements. Since the aircraft is sensitive to weight, the structural design of the drive and transmission becomes a problem.

[0003] The inventor of the present application has specifically designed an integrated structure that converts the linear motion of a lead screw into lateral translation and rotational motion. This solution has a simple structure and reliable performance, and does not require the addition of complex mechanisms in the machine body. Summary of the invention

[0004] The purpose of the present invention is to provide a uniform telescopic structure applied to a variable-sweep aircraft, which controls the uniform telescopic movement of the inner wing and the outer wing through a lead screw module, a push rod mechanism and inner and outer wing slide groove structures, which is fast, efficient and accurate.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: A uniform telescopic structure applied to a variable-sweep aircraft includes a lead screw module 5, a push rod mechanism 6, an inner wing slide groove structure 3, and an outer wing slide groove structure 4. The lead screw module 5 slides symmetrically back and forth, driving the push rod mechanism 6 fixed on the slide to push the inner wing 2 and the outer wing 1 along the slide groove to achieve overall telescopic movement. The inner wing 2 is fixed inside the outer wing 1, and its position is determined by the outer wing slide groove 3, the inner wing slide groove 4, and the cylindrical pin. When the lead screw module 5 is driven by the motor, the slide makes a linear reciprocating motion, driving the push rod mechanism 6 fixed on the slide to reciprocate at a fixed angle at a uniform speed. Since the angle of the push rod mechanism 6 remains unchanged, the other end moves along the slide groove, driving the inner wing 2 and the outer wing 1 to telescopic movement as a whole.

[0006] Compared with the prior art, the inner wing designed in the present invention is fixed inside the outer wing. When the screw module reciprocates at a uniform speed, the inner wing and the outer wing cooperate with each other through the slide groove and the cylindrical pin to realize the action; the push rod mechanism is a parallel arrangement of two long rods, one end of which is fixed to the slide table of the screw module, and the other end cooperates with the slide grooves of the outer wing and the inner wing. The outer wing is designed with two straight slide grooves with angles, and the inner wing is designed with straight and curved slide grooves. When the screw module moves at a uniform speed, it drives the push rods of the corresponding angles to move along the outer and inner wing slide grooves, so that the outer and inner wings rotate and extend at a uniform speed along the slide rails. The uniform telescopic mechanism converts uniform linear motion into uniform rotational motion by designing the slide grooves to cooperate with each other. The structural design is simple, and the functions are realized quickly, efficiently and accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present invention is further described below in conjunction with the accompanying drawings.

[0008] Figure 1 It is a closed schematic diagram of the overall structure.

[0009] Figure 2 It is a semi-expanded schematic diagram of the overall structure.

[0010] Figure 3 It is a schematic diagram of the overall structure when fully expanded.

[0011] Figure 4 It is a schematic diagram of the outer wing chute.

[0012] Figure 5 It is a schematic diagram of the inner wing chute.

[0013] Figure 6 It is a schematic diagram of the inner and outer wing chutes.

[0014] The numbers in the figure are: 1, outer wing; 2, inner wing; 3, outer wing slide groove; 4, inner wing slide groove; 5, screw module; 6, push rod mechanism. DETAILED DESCRIPTION

[0015] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0016] A uniform telescopic structure for variable-sweep aircraft includes an outer wing 1, an inner wing 2, an outer wing chute 3, an inner wing chute 4, a lead screw module 5, and a push rod mechanism 6. The inner wing 2 is located inside the outer wing 1, and the outer wing 1 and the inner wing 2 cooperate through the outer wing chute 3 and the inner wing chute 4. One end of the push rod structure 6 passes through the outer wing chute 3 and the inner wing chute 4, and the other end is fixed on the slide of the lead screw module 5; when the slide of the lead screw module 5 moves uniformly toward the middle, it drives the push rod mechanism 6 to move along the chute, so that the outer wing 1 and the inner wing 2 first extend outward at a uniform speed, and reach the inflection point of the two straight lines of the outer wing chute 3, and the inner wing 2 begins to rotate uniformly and extend to a certain angle, so that the entire wing is unfolded, and when the lead screw module 5 moves in the opposite direction, the entire wing is retracted. When the lead screw module 5 moves, it drives the push rod mechanism 6 to move symmetrically along the outer wing chute 3 and the inner wing chute 4, so that the outer wing 1 and the inner wing 2 move at a uniform speed.

[0017] Furthermore, the outer wing 1 is a hollow structure, and the outer wing slide grooves 3 are symmetrically distributed on the outer wing 1 in the upper and lower parts. The outer wing slide grooves 3 are in the shape of two straight lines spliced ​​at a certain angle and equidistantly penetrate the outer wing 1.

[0018] Furthermore, the inner wing 2 is a solid structure, the inner wing slide groove 4 is located in the upper middle part of the inner wing 2, and the shape of the inner wing slide groove 4 is a section of straight line and curve spliced ​​together, and it passes through the inner wing 2 at equal distances.

[0019] The present invention will take the entire process of unfolding the wings of a variable-sweep wing aircraft as an application example. The following describes the mechanism workflow in two stages with respect to the unfolding process.

[0020] The first section is the stage where the outer wing and the inner wing extend outward at a uniform speed at the same time. At this time, the screw module 5 is driven by the motor to move the upper and lower slides toward the middle at a uniform speed at the same time. The outer wing slide groove 3 and the inner wing slide groove 4 completely overlap in position and are of the same size. Therefore, when the push rod mechanism 6 is pushed along the slide groove, the outer wing 1 and the inner wing 2 extend outward at a uniform speed at the same time, and no relative movement occurs between the inner and outer wings.

[0021] The second section of the push rod mechanism 6 moves to the turning point of the two straight lines of the outer wing slide groove 3. Since the direction of the second section of the outer wing slide groove 3 is consistent with the movement direction of the push rod mechanism 6 driven by the screw module 5, when the screw module 5 drives the push rod mechanism 6 to continue to move, the outer wing 1 does not move and remains stationary; the second section of the inner wing slide groove 4 is a curve. When the push rod mechanism 6 moves along the inner wing slide groove 4, the inner wing 2 will rotate at a uniform speed along the cylindrical pin connecting the inner and outer wings until the push rod structure 6 moves to the end point where the inner wing slide groove 4 and the outer wing slide groove 3 overlap, and the entire wing deployment movement is completely completed.

Claims

1. A uniform telescopic structure applied to a variable-sweep aircraft, characterized in that: The invention comprises an outer wing (1), an inner wing (2), an outer wing slide groove (3), an inner wing slide groove (4), a screw module (5) and a push rod mechanism (6); the inner wing (2) is located inside the outer wing (1); the outer wing (1) and the inner wing (2) cooperate with each other through the outer wing slide groove (3) and the inner wing slide groove (4); one end of the push rod structure (6) passes through the outer wing slide groove (3) and the inner wing slide groove (4); the other end is fixed on the slide table of the screw module (5); when the slide table of the screw module (5) moves toward the middle at a uniform speed, the push rod is driven The mechanism (6) moves along the slide groove, so that the outer wing (1) and the inner wing (2) first extend outward at a uniform speed, and when they reach the turning point of the two straight lines of the outer wing slide groove (3), the inner wing (2) begins to rotate at a uniform speed and extend to a certain angle, so that the entire wing is unfolded. When the lead screw module (5) moves in the opposite direction, the entire wing is retracted. When the lead screw module (5) moves, it drives the push rod mechanism (6) to move symmetrically along the outer wing slide groove (3) and the inner wing slide groove (4), so that the outer wing (1) and the inner wing (2) move at a uniform speed.

2. The uniform telescopic structure for a variable-sweep aircraft according to claim 1, characterized in that: The outer wing (1) is a hollow structure, and the outer wing slide grooves (3) are symmetrically distributed on the outer wing (1) in an upper and lower manner. The outer wing slide grooves (3) are in the shape of two straight lines spliced ​​at a certain angle and equidistantly passing through the outer wing (1).

3. The uniform telescopic structure for a variable-sweep aircraft according to claim 1, characterized in that: The inner wing (2) is a solid structure, the inner wing slide groove (4) is located in the upper middle part of the inner wing (2), and the shape of the inner wing slide groove (4) is a section of straight line and curve spliced ​​together, and runs through the inner wing (2) at equal distances.

4. The uniform telescopic structure for a variable-sweep aircraft according to claim 1, characterized in that: The agency workflow is divided into two stages: The first stage is a stage in which the outer wing and the inner wing are extended outward at a uniform speed at the same time. The lead screw module (5) is driven by a motor to move the upper and lower slides toward the middle at a uniform speed at the same time. Since the outer wing slide groove (3) and the inner wing slide groove (4) are completely overlapped in position and have the same size, when the push rod mechanism (6) is pushed along the slide groove, the outer wing (1) and the inner wing (2) are extended outward at a uniform speed at the same time, and no relative movement occurs between the inner and outer wings. The second section of the push rod mechanism (6) moves to the turning point of the two straight lines of the outer wing slide groove (3). Since the direction of the second section of the outer wing slide groove (3) is consistent with the movement direction of the push rod mechanism (6) driven by the screw module (5), when the screw module (5) drives the push rod mechanism (6) to continue to move, the outer wing (1) does not move and remains stationary; the second section of the inner wing slide groove (4) is a curve. When the push rod mechanism (6) moves along the inner wing slide groove (4), the inner wing (2) rotates at a uniform speed along the cylindrical pin connecting the inner and outer wings until the push rod structure (6) moves to the end point where the inner wing slide groove (4) and the outer wing slide groove (3) overlap, and the entire wing deployment movement is completely completed.

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