Three-layer laminated differential conical surface multi-dimensional deformation mechanism

Abstract

The application provides a three-layer laminated differential conical multi-dimensional deformation mechanism and belongs to the technical field of aircrafts. Three groups of outer layer support sheets, middle layer support sheets and inner layer support sheets are arranged in a circulating sequence, so that the differential support sheets cannot interfere with each other, and can form a complete conical shape after being completely unfolded, so that the conical surface formed by the support sheets has good airtightness and good supportability. The application comprises a conical body and an actuating ring, further comprises a guide ring, a transmission assembly and a support assembly; the outer side of the conical body is provided with the actuating ring and the guide ring, the guide ring is located below the actuating ring, the support assembly is arranged below the guide ring, the support assembly is arranged at the opening of the bottom surface of the conical body, the transmission assembly is arranged between the guide ring and the support assembly; the bottom surface of the actuating ring is fixedly provided with a spherical hinge, the top surface of the guide ring is fixedly provided with a spherical hinge, a rigid rod is arranged between the two spherical hinges; the inner side of the actuating ring is provided with a guide groove, and a linear guide is arranged in the guide groove.

Description

Technical Field

[0001] The present invention relates to a three-layer laminate differential conical surface multi-dimensional deformation mechanism, and particularly belongs to the technical field of aircraft. Background Art

[0002] The spatial conical extension and retraction mechanism is an effective way to improve aircraft performance. Currently, the extendable conical mechanisms in use all use single-stage or double-stage translational extension mechanisms, all of which are placed outside the small area of ​​the cone. The radial space they occupy is consistent with the circular envelope of the cone's end section. The deformation mechanism is driven by two energy sources: motors and gas generators. The deformation mechanism driven by motors is guided by a ball screw, while the deformation mechanism driven by gas generators is guided by an actuator or slide rail.

[0003] Existing deformable conical surface mechanisms mostly adopt an extendable outlet cone form with linear sliding, which occupies a large radial and axial space, and the linear motion stroke and deployment time during the deployment process are long. This application solution has a slow positioning speed, a long positioning stroke, a bulky structure and occupies a large conical external space. Summary of the Invention

[0004] The purpose of the present invention is to provide a three-layer laminate differential conical surface multi-dimensional deformation mechanism to ensure that the mechanism can achieve rapid contraction in the radial and axial directions.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: the invention includes a conical body and an actuating ring, and also includes a guide ring, a transmission assembly and a support assembly;

[0006] An actuating ring and a guide ring are provided on the outside of the conical body. The guide ring is located below the actuating ring. A support assembly is provided below the guide ring. The support assembly is provided at the opening of the bottom surface of the conical body. A transmission assembly is provided between the guide ring and the support assembly.

[0007] Furthermore, the mechanism is driven by the actuating ring, and the guide ring enables the support assembly to be folded and unfolded through the transmission assembly.

[0008] A ball joint is fixedly installed on the bottom surface of the actuating ring, and a ball joint is fixedly installed on the top surface of the guide ring, and a rigid rod is provided between the two ball joints;

[0009] Furthermore, the two ball joints cooperate with the rigid rod to enable the actuating ring to move relative to the guide ring, so that the actuating ring can drive the transmission assembly.

[0010] A guide groove is provided on the inner side of the actuating ring, a linear guide is provided in the guide groove, and the linear guide is fixedly mounted on the outer side wall of the conical body;

[0011] Furthermore, the linear guide makes the movement of the actuating ring more stable.

[0012] A fixed section is fixedly installed on the outer side of the cone body, a lower annular groove is opened on the fixed section, and a guide ring is arranged in the lower annular groove, so that the guide ring can rotate with a single degree of freedom;

[0013] Furthermore, the fixed section makes the rotation of the guide ring more stable.

[0014] The transmission assembly includes a slider, a connecting rod and a hinge;

[0015] A cam groove is provided on the inner side of the guide ring, a slider is provided in the cam groove, and the slider is provided in the slide groove provided in the fixed section, and the slider slides along the slide groove in the direction in which the diameter of the conical body increases, one end of the slider is connected to a connecting rod, the other end of the connecting rod is connected to a hinge, and the other end of the hinge is connected to a support sheet assembly;

[0016] Furthermore, the guide ring can drive the slider to move, and the slider can drive the hinge to rotate through the connecting rod. When the hinge rotates, the support sheet assembly can be driven to expand or retract.

[0017] There are three groups of cam grooves, and the three groups of cam grooves are set with different tracks, so that the cam grooves match the three-level differential motion state;

[0018] The support assembly includes an outer support sheet, a middle support sheet, and an inner support sheet; the outer support sheet, the middle support sheet, and the inner support sheet are each provided with three groups, and each group of the outer support sheet, the middle support sheet, and the inner support sheet is provided with 8 support sheets. The three groups of outer support sheets, the middle support sheets, and the inner support sheets are arranged in a cycle, with a total of 24 support sheets arranged at equal angles at the opening of the bottom surface of the cone;

[0019] Furthermore, by setting up three sets of cam grooves with different trajectories, the outer support sheet, middle support sheet and inner support sheet can perform differential motion respectively, which can achieve different needs such as synchronous positioning and differential start according to specific design requirements. The anti-interference folding structure of 24 support sheets makes the overlapped form of the mechanism have good airtightness and support performance.

[0020] The beneficial effects of the present invention are:

[0021] 1. The three groups of outer support sheets, middle support sheets and inner support sheets are arranged in a cycle, so that the differential support sheets cannot interfere with each other, so that they can form a complete cone shape after being fully deployed, so that the cone surface formed by the support sheets has good sealing and support performance.

[0022] 2. By installing ball joints at both ends of the rigid rod, the drive mode can be converted from linear motion to rotation, which improves the convenience of mechanism control.

[0023] 3. Through the structural setting of three groups of cam grooves with different tracks, differential control of the outer support plate, middle support plate and inner support plate is realized, so that different needs such as synchronous positioning and differential starting can be achieved according to specific design requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 Schematic diagram of the hinge structure of the present invention;

[0026] Figure 3 It is a front view structural schematic diagram of the present invention;

[0027] Figure 4 This is a schematic diagram of the folded structure of the support sheet assembly of the present invention;

[0028] Figure 5 It is a schematic diagram of the expanded structure of the support plate assembly of the present invention.

[0029] 1. Cone; 2. Actuating ring; 3. Linear guide; 4. Ball joint; 5. Guide ring; 6. Slider; 7. Connecting rod; 8. Hinge; 9. Support plate assembly; 10. Outer support plate; 11. Middle support plate; 12. Inner support plate. DETAILED DESCRIPTION

[0030] The following will be combined with the Figure 1-5 , clearly and completely describe the technical solutions in the embodiments.

[0031] Specific implementation method 1: Figure 1-3 As shown, an actuating ring 2 and a guide ring 5 are provided on the outside of the conical body 1. The actuating ring 2 can move in a vertical position on the outside of the conical body 1, and the guide ring 5 can rotate with a single degree of freedom on the outside of the conical body 1. The guide ring 5 is located below the actuating ring 2 and can be driven to rotate by the actuating ring 2. A support assembly 9 is provided below the guide ring 5, and a transmission assembly is provided between the guide ring 5 and the support assembly 9. The support assembly 9 is provided at the opening on the bottom surface of the conical body 1. The guide ring 5 can drive the support assembly 9 to expand or retract through the transmission assembly.

[0032] A ball joint 4 is fixedly mounted on the bottom surface of the actuating ring 2, and a ball joint 4 is fixedly mounted on the top surface of the guide ring 5. A rigid rod is provided between the two ball joints 4. The two ball joints 4 cooperate with the rigid rod provided therebetween so that the actuating ring 2 can move in a vertical position, and at the same time, the guide ring 5 can rotate. A guide groove is provided on the inner side of the actuating ring 2, and a linear guide 3 is provided in the guide groove. The linear guide 3 is fixedly mounted on the outer side wall of the conical body 1. The movement of the actuating ring 2 is limited by the linear guide 3, so that the actuating ring 2 can stably move in a vertical position. A fixed section is fixedly mounted on the outer side of the conical body 1, and a lower annular groove is provided on the fixed section. A guide ring 5 is provided in the lower annular groove. The guide ring 5 can stably rotate in a single degree of freedom through the fixed section.

[0033] Specific implementation method 2: Figure 4-5 As shown,

[0034] A cam groove is provided on the inner side of the guide ring 5. There are three groups of cam grooves. The three groups of cam grooves are set for different trajectories. The three groups of cam grooves match the three-layer differential motion state respectively, so that the mechanism can realize different requirements such as synchronous positioning and differential start according to specific design requirements. A slider 6 is provided in the cam groove, and the slider 6 is slidably set in the slide groove provided in the fixed section. The slider 6 can be driven by the guide ring 5 to slide in the direction of increasing the diameter of the cone 1. One end of the slider 6 is rotatably connected to the connecting rod 7, which can be driven to rotate by the slider 6. The other end of the connecting rod 7 is rotatably connected to the hinge 8, which can be driven to rotate by the connecting rod 7. The other end of the hinge 8 is fixedly connected to the support piece assembly 9, which can be driven to rotate by the hinge 8, so as to realize the expansion or retraction state of the support piece assembly 9.

[0035] There are three groups of outer support sheets 10, middle support sheets 11 and inner support sheets 12. The three groups of outer support sheets 10, middle support sheets 11 and inner support sheets 12 are arranged in a cycle, so that the differential support sheets cannot interfere with each other. Each group of outer support sheets 10, middle support sheets 11 and inner support sheets 12 is provided with 8 support sheets, and a total of 24 support sheets are arranged at equal angles at the bottom opening of the conical body 1. The anti-interference folding structure of the 24 support sheets can form a complete conical shape after being fully unfolded, so that the conical surface formed by the support sheets has good sealing and support.

[0036] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the present profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement of the above embodiments made according to the technical essence of the present invention, within the spirit and principles of the present invention, without departing from the content of the technical solution of the present invention, shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A three-layer laminate differential conical multi-dimensional deformation mechanism, comprising a conical body (1) and an actuating ring (2), characterized in that: It also includes a guide ring (5), a transmission assembly and a support plate assembly (9); An actuating ring (2) and a guide ring (5) are provided on the outside of the conical body (1), the guide ring (5) is located below the actuating ring (2), a support plate assembly (9) is provided below the guide ring (5), the support plate assembly (9) is provided at an opening on the bottom surface of the conical body (1), and a transmission assembly is provided between the guide ring (5) and the support plate assembly (9); A ball joint (4) is fixedly mounted on the bottom surface of the actuating ring (2), a ball joint (4) is fixedly mounted on the top surface of the guide ring (5), and a rigid rod is provided between the two ball joints (4); A guide groove is provided on the inner side of the actuating ring (2), a linear guide member (3) is provided in the guide groove, and the linear guide member (3) is fixedly mounted on the outer side wall of the conical body (1); A fixed section is fixedly mounted on the outer side of the conical body (1), a lower annular groove is provided on the fixed section, and a guide ring (5) is provided in the lower annular groove, so that the guide ring (5) can rotate with a single degree of freedom; The transmission assembly includes a slider (6), a connecting rod (7) and a hinge (8); A cam groove is provided on the inner side of the guide ring (5), a slider (6) is provided in the cam groove, and the slider (6) is provided in a slide groove provided in the fixed section, the slider (6) slides along the slide groove in a direction in which the diameter of the conical body (1) increases, one end of the slider (6) is connected to a connecting rod (7), the other end of the connecting rod (7) is connected to a hinge (8), and the other end of the hinge (8) is connected to a support plate assembly (9); There are three groups of cam grooves, and the three groups of cam grooves are arranged with different tracks, so that the cam grooves match the three-layer differential motion state; the support plate assembly (9) includes an outer layer support plate, a middle layer support plate and an inner layer support plate.

2. The three-layer laminate differential conical multi-dimensional deformation mechanism according to claim 1, characterized in that: There are three groups of outer support sheets, middle support sheets and inner support sheets, and each group of outer support sheets, middle support sheets and inner support sheets is provided with 8 support sheets. The three groups of outer support sheets, middle support sheets and inner support sheets are arranged in a cycle, and a total of 24 support sheets are arranged at equal angles at the bottom opening of the cone (1).

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