A bending low-impact connection unlocking device

Abstract

The present invention relates to a bending low-impact connection and unlocking device, comprising a connection and unlocking assembly, a carrier base plate, a bending buffer assembly, and a satellite base plate. Initially, the bending buffer assembly is connected to the carrier base plate through the connection and unlocking assembly, and then the folded bending buffer assembly is fixedly connected to the satellite base plate to achieve connection and support of the satellite-rocket. After entering orbit, the connection and unlocking assembly is energized and unlocked, and the bending buffer assembly is separated from the carrier base plate to achieve unlocking and separation of the satellite-rocket. The lower plate of the bending buffer assembly of the present invention is fixedly connected to the carrier base plate by a separation nut, and the upper plate is fixedly connected to the satellite base plate by screws. During separation, the impact and vibration generated by the actuation of the separation nut itself and the release of the pre-tightening force are attenuated and transmitted to the satellite base plate through the bending structure composed of the outer tube, the middle tube, and the inner tube, thereby effectively reducing the impact on the satellite.

Description

Technical Field

[0001] The present invention relates to a bending low-impact connection and unlocking device, belonging to the technical field of satellite-rocket separation. Background Art

[0002] With the development of space science and technology, the technological trend of small satellite development at home and abroad is becoming increasingly mature. Against this background, the payload units on satellites are becoming more and more compact and sophisticated, and have higher requirements on the mechanical environment such as the impact generated during the launch and separation process.

[0003] For the launch of small satellites, the existing point-type satellite-rocket separation mechanism is a commonly used product for unlocking the connection between small satellites and rockets. It has the characteristics of simple technology and high reliability. However, it uses pyrotechnics to ignite to achieve unlocking and separation. The impact caused by the unlocking of pyrotechnics has a greater impact on the satellite. Summary of the Invention

[0004] The technical problem solved by the present invention is to overcome the deficiencies of the prior art and propose a bending low-impact connection and unlocking device to effectively reduce the impact on satellites.

[0005] The solution of the present invention is:

[0006] A bending low-impact connection and unlocking device includes a connection and unlocking component, a carrier base plate, a bending buffer component and a satellite base plate. Initially, the bending buffer component is connected to the carrier base plate through the connection and unlocking component, and then the folded bending buffer component is fixedly connected to the satellite base plate to achieve the connection and support of the satellite and rocket; after entering orbit, the connection and unlocking component is energized and unlocked, and the bending buffer component is separated from the carrier base plate to achieve the unlocking and separation of the satellite and rocket.

[0007] Furthermore, the connection unlocking assembly includes a separation nut, a shear cone sleeve, a gasket, a loading nut, a spring and a locking nut.

[0008] The shear cone sleeve is set between the carrier base plate and the connection part of the separation nut, which is used for the installation of the separation nut and the elimination of the shear force after detonation;

[0009] The gasket is located between the loading nut and the lower plate of the bent buffer assembly;

[0010] The spring is arranged outside the loading nut and is compressed by rotating the locking nut.

[0011] Furthermore, the bending buffer assembly includes an outer cylinder, a middle cylinder, an inner cylinder, an upper plate and a lower plate.

[0012] From outside to inside, they are outer tube, middle tube and inner tube. The upper plate is fixedly connected to the outer tube through the top end face of the outer tube, the outer tube is fixedly connected to the middle tube through the bottom end face of the outer tube, the middle tube is fixedly connected to the inner tube through the top end face of the middle tube, and the inner tube is fixedly connected to the lower plate through the bottom end face of the inner tube.

[0013] Furthermore, the lower plate and the carrying base plate are connected by applying a pre-tightening force to the loading nut on the separation nut.

[0014] Furthermore, a tapered hole is provided on the lower plate, which cooperates with the shear-resistant cone sleeve to be used for installing the separation nut and eliminating the shear force after detonation.

[0015] Furthermore, the upper plate is fixedly connected to the satellite bottom plate, and the enclosed space formed can be used to collect excess materials after the separation nut is detonated.

[0016] Furthermore, during separation, the impact and vibration generated by the actuation of the separation nut itself and the release of the pre-tightening force are attenuated and transmitted to the satellite base plate through the bent structure composed of the outer tube, the middle tube and the inner tube, thereby reducing the impact on the satellite.

[0017] Furthermore, when separating, the spring pops up to pull out the threaded end of the separation nut, thereby unlocking and separating the satellite and the rocket.

[0018] Furthermore, after entering orbit, the unlocking assembly is connected and powered on to unlock it, and the spring pops up to pull out the threaded end of the separation nut, and the bent buffer assembly is separated from the carrier base plate, realizing the unlocking and separation of the satellite and rocket.

[0019] Furthermore, the outer tube, the middle tube and the inner tube have different diameters and can be inserted in sequence.

[0020] The beneficial effects of the present invention compared with the prior art are:

[0021] (1) The bending buffer assembly of the present invention is fixedly connected to the satellite base plate by screws. The connection size can be modularly customized according to the satellite payload requirements and the actual situation of the base plate, and has good spatial adaptability;

[0022] (2) The lower plate of the bending buffer assembly of the present invention is fixedly connected to the carrier base plate by separating nuts, and the upper plate is fixedly connected to the satellite base plate by screws. Its bending structure has the characteristics of high strength and good connection rigidity, can adapt to a large number of environmental conditions, and can achieve reliable connection;

[0023] (3) The lower plate of the bent buffer assembly of the present invention is fixedly connected to the carrier base plate by a separation nut, and the upper plate is fixedly connected to the satellite base plate by screws. When separated, the impact and vibration generated by the actuation of the separation nut itself and the release of the pre-tightening force are attenuated and transmitted to the satellite base plate through the bent structure composed of the outer tube, the middle tube, and the inner tube, thereby effectively reducing the impact on the satellite;

[0024] (4) After being unlocked, the bending buffer assembly of the present invention is still fixed to the satellite base plate by screws. The bending structure composed of the outer tube, the middle tube, the inner tube, the upper plate and the lower plate is not easy to absorb heat but easy to dissipate heat, has good thermal control performance, and does not require heating control measures.

[0025] (5) The bending structure composed of the outer tube, middle tube, inner tube, upper plate and lower plate of the bending buffer assembly of the present invention is simple in style, easy to connect and has relatively low cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of the bending low-impact connection and unlocking device of the present invention;

[0027] Figure 2 This is a schematic structural diagram of the bending buffer assembly of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the connection and unlocking components of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the embodiments.

[0030] A bending low-impact connection and unlocking device belongs to the connection and separation field related to satellite-rocket separation, etc., including a connection and unlocking component 1, a carrier base plate 2, a bending buffer component 3 and a satellite base plate 4, wherein the connection and unlocking component 1 includes: a separation nut 1-1, a shear cone sleeve 1-2, a gasket 1-3, a loading nut 1-4, a spring 1-5, and a locking nut 1-6, and the bending buffer component 3 includes: an outer tube 3-1, a middle tube 3-2, an inner tube 3-3, an upper plate 3-4, and a lower plate 3-5.

[0031] First, install the bent buffer assembly 3 in the bent buffer assembly. The bent buffer assembly 3 is placed in the order of outer cylinder 3-1, middle cylinder 3-2, and inner cylinder 3-3 from the outside to the inside. The diameters of each cylinder are inconsistent and can be inserted in sequence. The upper plate 3-4 is connected to the outer cylinder 3-1 through the top end screws of the outer cylinder 3-1, the outer cylinder 3-1 and the middle cylinder 3-2 are connected through the bottom end screws of the outer cylinder 3-1, the middle cylinder 3-2 and the inner cylinder 3-3 are connected through the top end screws of the middle cylinder 3-2, and the inner cylinder 3-3 and the lower plate 3-5 are connected through the bottom end screws of the inner cylinder 3-3.

[0032] Secondly, the lower plate of the bent buffer assembly 3 and the carrier base plate 2 apply a preload force to the loading nut 1-4 on the separation nut 1-1, achieving a secure connection. The shear cone sleeve 1-2 is located between the connection between the carrier base plate 2 and the separation nut 1-1, and is used to install the separation nut and eliminate shear forces after detonation. The gasket 1-3 is located between the loading nut 1-4 and the lower plate of the bent buffer assembly 3, acting as a guide. The spring 1-5 is located outside the loading nut 1-4 and is compressed by turning the lock nut 1-6.

[0033] Finally, after entering orbit, the unlocking component 1 is connected and energized to unlock it. The spring 1-5 pops up to pull out the threaded end of the separation nut, and the bent buffer component 3 is separated from the carrier base plate 2, realizing the unlocking and separation of the satellite and rocket.

[0034] The following is further described in conjunction with specific embodiments:

[0035] like Figure 1 As shown, the bending low-impact connection and unlocking device consists of a connection and unlocking component 1, a carrying base plate 2, a bending buffer component 3 and a satellite base plate 4.

[0036] like Figure 2 As shown, the bent buffer assembly 3 in the bent low-impact connection unlocking device is arranged in the order of outer cylinder 3-1, middle cylinder 3-2 and inner cylinder 3-3 from outside to inside, wherein the diameters of each cylinder are inconsistent and can be inserted in sequence, the upper plate 3-4 is connected to the outer cylinder 3-1 by the top end screws of the outer cylinder 3-1, the outer cylinder 3-1 is connected to the middle cylinder 3-2 by the bottom end screws of the outer cylinder 3-1, the middle cylinder 3-2 is connected to the inner cylinder 3-3 by the top end screws of the middle cylinder 3-2, and the inner cylinder 3-3 is connected to the lower plate 3-5 by the bottom end screws of the inner cylinder 3-3.

[0037] like Figure 3 As shown, the lower plate of the bending buffer assembly 3 and the carrier base plate 2 are reliably connected by applying a pre-tightening force to the loading nut 1-4 on the separation nut 1-1. The shear cone sleeve 1-2 is set between the connection part of the carrier base plate 2 and the separation nut 1-1, and is used for the installation of the separation nut and the elimination of the shear force after detonation. The gasket 1-3 is located between the loading nut 1-4 and the lower plate of the laminated buffer assembly 3, and plays a guiding role. The spring 1-5 is set on the outside of the loading nut 1-4 and is compressed by rotating the locking nut 1-6. After entering the orbit, the unlocking assembly 1 is connected and energized to unlock. The spring 1-5 pops up to pull out the threaded end of the separation nut, and the bending buffer assembly 3 is separated from the carrier base plate 2, realizing the unlocking and separation of the satellite and rocket.

[0038] The bending buffer assembly of the present invention is fixedly connected to the satellite base plate by screws. The connection size can be modularly customized according to the satellite payload requirements and the actual conditions of the base plate, and has good spatial adaptability.

[0039] The lower plate of the bent buffer assembly of the present invention is fixedly connected to the carrier base plate by separating nuts, and the upper plate is fixedly connected to the satellite base plate by screws. The bent structure has the characteristics of high strength and good connection rigidity, can adapt to a large number of environmental conditions, and can achieve reliable connection;

[0040] The lower plate of the curved buffer assembly of the present invention is fixedly connected to the carrier base plate by a separation nut, and the upper plate is fixedly connected to the satellite base plate by screws. When separated, the impact and vibration generated by the actuation of the separation nut itself and the release of the pre-tightening force are attenuated and transmitted to the satellite base plate through the curved structure composed of the outer tube, middle tube, and inner tube, thereby effectively reducing the impact on the satellite.

[0041] After being unlocked, the bending buffer assembly of the present invention is still fixed to the satellite base plate by screws. The bending structure composed of the outer tube, middle tube, inner tube, upper plate and lower plate is not easy to absorb heat and is easy to dissipate heat. It has good thermal control performance and does not require heating control measures.

[0042] The bending structure composed of the outer cylinder, the middle cylinder, the inner cylinder, the upper plate and the lower plate of the bending buffer assembly of the present invention has a simple bending structure, convenient connection and relatively low use cost.

[0043] Although the present invention has been disclosed above in terms of preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solutions of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the scope of protection of the technical solutions of the present invention.

Claims

1. A bending low-impact connection unlocking device, characterized in that: The invention comprises a connecting and unlocking assembly (1), a carrier base plate (2), a bending buffer assembly (3) and a satellite base plate (4); initially, the bending buffer assembly (3) is connected to the carrier base plate (2) by connecting the unlocking assembly (1), and then the folded bending buffer assembly (3) is fixedly connected to the satellite base plate (4), thereby realizing the connection and carrying of the satellite and the rocket; after entering orbit, the connecting and unlocking assembly (1) is energized and unlocked, and the bending buffer assembly (3) is separated from the carrier base plate (2), thereby realizing the unlocking and separation of the satellite and the rocket; The bending buffer assembly (3) comprises an outer cylinder (3-1), a middle cylinder (3-2), an inner cylinder (3-3), an upper plate (3-4) and a lower plate (3-5). From outside to inside, they are an outer tube (3-1), a middle tube (3-2) and an inner tube (3-3); the upper plate (3-4) is fixedly connected to the outer tube (3-1) via the top end face of the outer tube (3-1); the outer tube (3-1) is fixedly connected to the middle tube (3-2) via the bottom end face of the outer tube (3-1); the middle tube (3-2) is fixedly connected to the inner tube (3-3) via the top end face of the middle tube (3-2); and the inner tube (3-3) is fixedly connected to the lower plate (3-5) via the bottom end face of the inner tube (3-3); The lower plate (3-5) and the carrier base plate (2) are connected by applying a pre-tightening force to the loading nut (1-4) on the separation nut (1-1); The upper plate (3-4) is fixedly connected to the satellite bottom plate (4), and the enclosed space formed can be used to collect excess matter after the separation nut (1-1) is detonated.

2. A bending low-impact connection unlocking device according to claim 1, characterized in that: The connection unlocking assembly (1) includes a separation nut (1-1), a shear cone sleeve (1-2), a washer (1-3), a loading nut (1-4), a spring (1-5) and a locking nut (1-6). The shear-resistant cone sleeve (1-2) is arranged between the carrier base plate (2) and the connection portion of the separation nut (1-1) and is used for installing the separation nut and eliminating shear force after detonation; The gasket (1-3) is located between the loading nut (1-4) and the lower plate of the bent buffer assembly (3); The spring (1-5) is arranged outside the loading nut (1-4), and the spring (1-5) is compressed by rotating the locking nut (1-6).

3. The bending low-impact connection unlocking device according to claim 1, characterized in that: A tapered hole is provided on the lower plate (3-5) and is used in conjunction with the shear-resistant tapered sleeve (1-2) for installing the separation nut (1-1) and eliminating shear force after detonation.

4. The bending low-impact connection unlocking device according to claim 1, characterized in that: During separation, the impact and vibration generated by the self-actuation of the separation nut (1-1) and the release of the pre-tightening force are attenuated and transmitted to the satellite base plate (4) through the bending structure composed of the outer cylinder (3-1), the middle cylinder (3-2) and the inner cylinder (3-3), thereby reducing the impact on the satellite.

5. The bending low-impact connection unlocking device according to claim 2, characterized in that: During separation, the spring (1-5) pops up to pull out the threaded end of the separation nut, thereby unlocking and separating the rocket and the satellite.

6. The bending low-impact connection unlocking device according to claim 5, characterized in that: After entering the orbit, the unlocking assembly (1) is connected and energized to unlock, the spring (1-5) pops up to pull out the threaded end of the separation nut, and the bending buffer assembly (3) is separated from the carrier base plate (2), thereby achieving the unlocking and separation of the rocket and the satellite.

7. The bending low-impact connection unlocking device according to claim 1, characterized in that: The outer cylinder (3-1), the middle cylinder (3-2), and the inner cylinder (3-3) have different diameters and can be inserted in sequence.

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