A single-sided dismountable separation structure device

Abstract

The present invention relates to the technical field of aerospace equipment, and particularly relates to a one-sided dismountable separation structure device, which mainly includes an explosive bolt box, explosive bolts, explosive bolt nuts, and explosive bolt nut fixing bolts. The explosive bolt box is composed of an explosive bolt box and a honeycomb buffer. The explosive bolt nuts can be fixed by the explosive bolt nut fixing bolts. The explosive bolt nuts are designed with a pointed top structure and a conical surface. This device is applicable to one-sided operation conditions, and can be disassembled and assembled with the function of repeated disassembly and assembly. At the same time, to reduce the impact during the separation of the explosive bolts, the structures of the explosive bolt nuts and the honeycomb buffer are designed.

Description

Technical Field

[0001] The present invention relates to the technical field of aerospace equipment, and particularly relates to a single-sided dismountable separation structure. Background Art

[0002] Explosion bolts are commonly used for the inter-stage separation of rocket sections and the separation of fairings in aerospace products. The explosion bolt and the explosion bolt nut are used together to connect and lock the first connected part and the second connected part. When the explosion bolt works, the explosion bolt and the explosion bolt nut separate at the weak part of the explosion bolt rod to achieve the separation between the connected parts.

[0003] Generally, explosion bolts have an open operating space. However, due to working conditions, the explosion bolts used in a certain commercial rocket do not have an open operating space. Therefore, this device is invented. This device is suitable for single-sided operation conditions, is dismountable and has the function of repeated disassembly and assembly. At the same time, in order to minimize the impact on loads such as satellites caused by the separation impact force of the explosion bolt during separation, an explosion bolt separation device with impact reduction is designed. Summary of the Invention

[0004] The problem to be solved by the present invention is to meet the requirements of dismountability and impact reduction of the explosion bolt during single-sided operation. To apply to this situation, the present invention provides a device that can effectively solve the problem of disassembly and assembly during single-sided operation, and at the same time provides a device for reducing the separation impact of the explosion bolt.

[0005] The technical solution of the present invention is: a single-sided dismountable separation structure device, mainly including an explosion bolt box, an explosion bolt, an explosion bolt nut, and an explosion bolt nut fixing bolt. The explosion bolt box is composed of an explosion bolt box and a honeycomb buffer. The explosion bolt nut can be fixed by the explosion bolt nut fixing bolt (the explosion bolt uses an existing technology product and is not the focus of this patent, so no specific description is made). The explosion bolt nut is designed with a pointed top structure and a conical surface. The honeycomb buffer of the present invention is composed of aluminum skin and an aluminum honeycomb core. It should be understood here that the aluminum skin can also be other materials such as non-metallic materials, and the aluminum honeycomb core can also be an aramid paper honeycomb core or a carbon fiber material honeycomb core, etc. (the honeycomb buffer is a common product of existing technology, and no specific description is made in the present invention). This device is suitable for single-sided operation conditions, is dismountable and has the function of repeated disassembly and assembly, and can also reduce the impact during the separation of the explosion bolt.

[0006] As a preferred technical solution, the top of the explosive bolt nut is designed as a conical surface with a trapezoidal cross-section, and the small bottom end of the trapezoid faces upward. When the explosive bolt explodes and separates, the explosive bolt nut moves upward rapidly under the action of the separation force, and the small bottom end of the trapezoid will pierce the honeycomb buffer member for the first time to release the impact energy on the honeycomb buffer member; the explosive bolt nut continues to move upward, and the conical surface continues to squeeze the honeycomb buffer member, and the honeycomb buffer member continues to be compressed and deformed to absorb the impact energy; due to the extrusion effect, the honeycomb buffer member will fill the waist-shaped groove of the explosive bolt after being extruded, thereby capturing the explosive bolt nut.

[0007] As a preferred technical solution, a threaded hole is made in the right half of the explosive bolt nut, and the threaded hole matches the fixing bolt of the explosive bolt nut; the left end face of the explosive bolt nut is a plane, which matches the plane on the first connected part.

[0008] As a preferred technical solution, a plane matching the left end face of the explosive bolt nut is made on the first connected part.

[0009] As a preferred technical solution, holes for installing the explosive bolt and holes for installing the fixing bolt of the explosive bolt nut are made on the second connected part.

[0010] As a preferred technical solution, the explosive bolt nut is installed at the corresponding position on the first connected part, and is tightened and fixed by using the fixing bolt of the explosive bolt nut. The threaded part of the explosive bolt is connected to the first connected part; then an explosive bolt box is installed above the explosive bolt nut (the explosive bolt box is composed of an explosive bolt box body and a honeycomb buffer member. The explosive bolt box is a common structural part product in aerospace, and will not be described in detail in the present invention); then the first connected part is installed at the corresponding position on the second connected part. At this time, the rod part of the fixing bolt of the explosive bolt nut passes through the installation hole of the fixing bolt of the explosive bolt nut on the second connected part; then the explosive bolt is installed at the corresponding position on the second connected part, and it passes through the explosive bolt installation hole on the second connected part and is tightened with the explosive bolt nut. When tightening, the left plane of the explosive bolt nut and the matching plane on the first connected part form a stop mechanism that restricts the rotational freedom of the explosive bolt nut; then the fixing bolt of the explosive bolt nut is removed; then a torque is applied to the explosive bolt to complete the entire single-sided installation process.

[0011] As a preferred technical solution, during disassembly, first, the fixing bolt of the explosive bolt nut is installed at the corresponding position on the first connected part through the installation hole of the fixing bolt of the explosive bolt nut on the first connected part, thereby restricting the freedom of the nut in the vertical direction; the explosive bolt is removed; the first connected part installed with the explosive bolt box and the explosive bolt nut is moved to one side, and the explosive bolt box is removed; the fixing bolt of the explosive bolt nut is removed; the explosive bolt nut is taken away to complete the entire single-sided disassembly process.

[0012] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 Fig. is a schematic structural diagram of a single-sided dismountable separation structure device provided by the present invention;

[0014] Figure 2 Fig. is a schematic structural diagram of an explosive bolt box mentioned in the present invention;

[0015] Figure 3 Fig. is a schematic structural diagram of an explosive bolt nut;

[0016] Figure 4 Fig. is an installation schematic diagram of the explosive bolt nut and the first connected part, and the explosive bolt nut in it is Figure 3 a top view, mainly showing the limiting structure for the circumferential rotation of the explosive bolt nut;

[0017] Explanation of reference numerals:

[0018] 1 - the first connected part; 2 - explosive bolt box; 4 - explosive bolt nut; 5 - the second connected part; 6 - explosive bolt; 7 - fixing bolt of the explosive bolt nut; 21 - explosive bolt box body; 22 - honeycomb buffer; 41 - conical surface of the explosive bolt nut; 42 - trapezoidal tip of the explosive bolt nut; 44 - waist-shaped groove of the explosive bolt nut; 45 - installation hole for the fixing bolt of the explosive bolt nut; 30 - left flat end face of the explosive bolt nut and the first connected part. Specific embodiments

[0019] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0020] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] As Figure 1 shown, a specific embodiment of a single-sided dismountable separation structure device includes:

[0022] A single-sided dismountable separation structure device mainly includes an explosive bolt box 2, an explosive bolt 6, an explosive bolt nut 4, and an explosive bolt nut fixing bolt 7. The explosive bolt box consists of an explosive bolt box body 21 and a honeycomb buffer 22. The explosive bolt nut 4 can be fixed by the explosive bolt nut fixing bolt 7 (the explosive bolt is a product of the existing technology and not the focus of this patent, so no specific description is given). The explosive bolt nut 4 is designed with a pointed top structure 42 and a conical surface 41. The honeycomb buffer 22 in this invention is composed of aluminum skin and an aluminum honeycomb core. It should be understood here that the aluminum skin can also be other materials such as non-metallic materials, and the aluminum honeycomb core can also be an aramid paper honeycomb core or a carbon fiber material honeycomb core, etc. (the honeycomb buffer is a common product of the existing technology, and no specific description is given in this invention). This device is applicable to single-sided operation conditions, and is dismountable and has the function of repeated disassembly and assembly. At the same time, it can reduce the impact when the explosive bolt separates.

[0023] The right half of the explosive bolt nut is provided with a threaded hole 45, and the threaded hole 45 matches the explosive bolt nut fixing bolt 7; the left end face of the explosive bolt nut is a plane, which matches the plane on the first connected part.

[0024] The first connected part 1 is provided with a plane that matches the left end face of the explosive bolt nut 4.

[0025] The second connected part 2 is provided with a hole for installing the explosive bolt 6 and a hole for installing the fixing bolt of the explosive bolt nut 4.

[0026] Install the explosive bolt nut 4 at the corresponding position on the first connected part 1, and use the explosive bolt nut fixing bolt 7 to tighten and fix it. The threaded part of the explosive bolt is connected to the first connected part 1; then install the explosive bolt box 2 above the explosive bolt nut 4 (the explosive bolt box 2 consists of an explosive bolt box body 21 and a honeycomb buffer 22. The explosive bolt box 2 is a common structural part product in aerospace, and no detailed description is given in this invention); then install the first connected part 1 at the corresponding position on the second connected part 2. At this time, the rod part of the explosive bolt nut fixing bolt 7 passes through the explosive bolt nut fixing bolt installation hole 45 on the second connected part 2; then install the explosive bolt 6 at the corresponding position on the second connected part 2, and it passes through the explosive bolt installation hole on the second connected part 2 and is tightened with the explosive bolt nut. When tightening, the left plane of the explosive bolt nut and the matching plane of the first connected part form a stop mechanism that restricts the rotational freedom of the explosive bolt nut; then remove the explosive bolt nut fixing bolt 7; then apply torque to the explosive bolt to complete the entire single-sided installation process.

[0027] When the whole device works, the explosive bolt 6 explodes and separates. The explosive bolt nut 4 moves rapidly upward under the action of the separation force. The small bottom end of the trapezoid will pierce the honeycomb buffer 22 for the first time and release the impact energy on the honeycomb buffer 22. The explosive bolt nut 4 continues to move upward, and the conical surface 41 continues to squeeze the honeycomb buffer 22, and the honeycomb buffer 22 continues to be compressed and deformed to absorb the impact energy. Due to the extrusion, the honeycomb buffer 22 is extruded and deformed and fills the waist-shaped groove 44 of the explosive bolt, thereby capturing the explosive bolt nut 4.

[0028] When disassembling the whole device, first install the fixing bolt 7 of the explosive bolt nut through the installation hole 45 of the fixing bolt of the explosive bolt nut on the first connected part 1, so as to limit the freedom degree of the explosive bolt nut 4 in the vertical direction; remove the explosive bolt 6; move the first connected part 1 equipped with the explosive bolt box 2 and the explosive bolt nut 4 to one side, and remove the explosive bolt box 2; remove the fixing bolt 7 of the explosive bolt nut; take away the explosive bolt nut 4 to complete the whole process of single-sided disassembly.

[0029] As a specific implementation manner, according to the above, there is only one-side operation, that is, single-sided operation, during the process of disassembling and assembling the separation device.

[0030] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A one-sided dismountable separation structure device, characterized in that, Comprising: At least one explosive bolt for connecting and locking two structural members; At least one explosive bolt nut mounted at the end of the explosive bolt rod; At least one fixing bolt for the explosive bolt nut; At least one explosive bolt box for collecting the separated explosive bolt nuts, The explosive bolt nut is designed with a trapezoidal tip and a waist-shaped groove at one end. When the explosive bolt explodes and separates, the small bottom surface of the trapezoidal tip pierces the honeycomb buffer. Under the extrusion action, the honeycomb buffer is deformed and fills the waist-shaped groove. The left end face of the explosive bolt nut is a plane; A threaded hole is made in its right half; the middle of the explosive bolt nut is a blind hole thread. The explosive bolt box consists of two parts, one is the explosive bolt box housing and the other is the honeycomb buffer.

Images