Three-layer lamination differential type conical surface multi-dimensional deformation mechanism

Abstract

The invention provides a three-layer lamination differential type conical surface multi-dimensional deformation mechanism, and particularly belongs to the technical field of aircrafts. The three groups of outer-layer supporting sheets, middle-layer supporting sheets and inner-layer supporting sheets are circularly and sequentially arranged, so that the differential type supporting sheets cannot interfere with one another and can form a complete conical surface shape after being completely unfolded in place, and a conical surface formed by the supporting sheets is good in leakproofness and supporting performance. The device comprises a conical surface body and an actuating ring, and further comprises a guide ring, a transmission assembly and a supporting assembly. An actuating ring and a guide ring are arranged on the outer side of the conical surface body, the guide ring is located below the actuating ring, a supporting assembly is arranged below the guide ring and arranged at an opening of the bottom face of the conical surface body, and a transmission assembly is arranged between the guide ring and the supporting assembly. A spherical hinge is fixedly mounted on the bottom surface of the actuating ring, a spherical hinge is fixedly mounted on the top surface of the guide ring, and a rigid rod is arranged between the two spherical hinges; a guide groove is formed in the inner side of the actuating ring, and a linear guide piece is arranged in the guide groove.

Description

Technical Field

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

[0002] The space cone extension and retraction mechanism is an effective way to improve the performance of aircraft. The currently used extendable cone mechanisms all use single-stage or double-stage translation extension mechanisms, which are all placed outside the small area of ​​the cone. The radial space they occupy is consistent with the circular envelope of the end of the cone. The deformation mechanism driving energy is motor and gas generator. The deformation mechanism driven by the motor is guided by a ball screw, and the deformation mechanism driven by the gas generator is guided by an actuator or a 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 arrival speed, a long arrival 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 cone multi-dimensional deformation mechanism to ensure that the mechanism can achieve rapid radial and axial contraction.

[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 supporting assembly;

[0006] An actuating ring and a guide ring are arranged outside the conical body, the guide ring is located below the actuating ring, a supporting assembly is arranged below the guide ring, the supporting assembly is arranged at the opening of the bottom surface of the conical body, and a transmission assembly is arranged between the guide ring and the supporting assembly;

[0007] Furthermore, the mechanism is driven by the actuating ring, and the guide ring enables the supporting 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, a ball joint is fixedly installed on the top surface of the guide ring, and a rigid rod is arranged between the two ball joints;

[0009] Furthermore, the two ball joints cooperate with the rigid rod so that the actuating ring can 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 conical 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 rotation of the guide ring is made more stable by the fixing section.

[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, 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-layer 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, each group of the outer support sheet, the middle support sheet and the inner support sheet is provided with 8 support sheets, and the three groups of the outer support sheets, the middle support sheets and the inner support sheets are arranged in a cycle, and a total of 24 support sheets are arranged at equal angles at the opening of the bottom surface of the cone body;

[0019] Furthermore, by setting three groups of cam grooves with different trajectories, the outer support sheet, the middle support sheet and the inner support sheet can perform differential motion respectively, and can realize different requirements such as synchronous positioning and differential start according to specific design requirements. By setting the structure of 24 support sheets to prevent interference and fold, the overlapped form formed by the mechanism has good airtightness and good support.

[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 airtightness and good support.

[0022] 2. By installing ball joints at both ends of the rigid rod, the driving form 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 trajectories, differential control of the outer support plate, the middle support plate and the 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 It is a 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 It 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 unfolded structure of the support sheet assembly of the present invention.

[0029] 1. Conical body; 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 attached 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 arranged outside the conical body 1. The actuating ring 2 can move in a vertical position outside the conical body 1, and the guide ring 5 can rotate with a single degree of freedom outside the conical body 1. The guide ring 5 is located below the actuating ring 2, and the guide ring 5 can be driven to rotate by the actuating ring 2. A support assembly 9 is arranged below the guide ring 5, and a transmission assembly is arranged between the guide ring 5 and the support assembly 9. The support assembly 9 is arranged at the opening of the bottom surface of the conical body 1, and 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 installed on the bottom surface of the actuating ring 2, and a ball joint 4 is fixedly installed on the top surface of the guide ring 5. A rigid rod is arranged between the two ball joints 4. The actuating ring 2 can move in a vertical position and the guide ring 5 can rotate at the same time by cooperating between the two ball joints 4 and the rigid rod arranged therebetween. A guide groove is provided on the inner side of the actuating ring 2, and a linear guide 3 is arranged in the guide groove. The linear guide 3 is fixedly installed 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 installed 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 arranged 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 with different trajectories. The three groups of cam grooves match three layers of differential motion states respectively, so that the mechanism can realize different requirements such as synchronous positioning and differential starting 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 a connecting rod 7, and the connecting rod 7 can be driven to rotate by the slider 6. The other end of the connecting rod 7 is rotatably connected to a hinge 8, and the hinge 8 can be driven to rotate by the connecting rod 7. The other end of the hinge 8 is fixedly connected to a support sheet assembly 9, and the support sheet assembly 9 can be driven to rotate by the hinge 8, so as to realize the expansion or retraction state of the support sheet assembly 9.

[0035] There are three groups of outer support sheets 10, middle support sheets 11 and inner support sheets 12, and 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 24 support sheets are arranged with an anti-interference folding structure so that they can form a complete conical shape after being fully unfolded, thereby making the conical surface formed by the support sheets have good sealing and support.

[0036] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement made to the above embodiments without departing from the content of the technical solution of the present invention, based on the technical essence of the present invention, within the spirit and principles of the present invention, still fall within the protection scope 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 assembly (9); An actuating ring (2) and a guide ring (5) are arranged on the outside of the conical body (1); the guide ring (5) is located below the actuating ring (2); a support assembly (9) is arranged below the guide ring (5); the support assembly (9) is arranged at an opening on the bottom surface of the conical body (1); and a transmission assembly is arranged between the guide ring (5) and the support assembly (9).

2. The three-layer laminate differential cone multi-dimensional deformation mechanism according to claim 1, characterized in that: 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 arranged between the two ball joints (4).

3. The three-layer laminate differential cone multi-dimensional deformation mechanism according to claim 1, characterized in that: A guide groove is provided on the inner side of the actuating ring (2), a linear guide member (3) is arranged in the guide groove, and the linear guide member (3) is fixedly mounted on the outer side wall of the conical body (1).

4. The three-layer laminate differential cone multi-dimensional deformation mechanism according to claim 1, characterized in that: A fixed section is fixedly installed 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 arranged in the lower annular groove, so that the guide ring (5) can rotate with a single degree of freedom.

5. The three-layer laminate differential cone multi-dimensional deformation mechanism according to claim 1, characterized in that: The transmission assembly comprises 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 sheet assembly (9).

6. The three-layer laminate differential cone multi-dimensional deformation mechanism according to claim 5, characterized in that: 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.

7. The three-layer laminate differential cone multi-dimensional deformation mechanism according to claim 1, characterized in that: The support assembly (9) comprises an outer support sheet (10), a middle support sheet (11) and an inner support sheet (12); The outer support sheets (10), the middle support sheets (11) and the inner support sheets (12) are each provided in three groups, and each group of the outer support sheets (10), the middle support sheets (11) and the inner support sheets (12) is provided with 8 support sheets. The three groups of the outer support sheets (10), the middle support sheets (11) and the inner support sheets (12) are arranged in a cycle, and a total of 24 support sheets are arranged at equal angles at the bottom opening of the conical body (1).

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