阅读说明：本技术 一种用于级间线式分离装置的非对称v型槽、双点解锁式刚性包带 (Asymmetric V-shaped groove and double-point unlocking type rigid wrapping belt for interstage linear separation device ) 是由 陆晓峰 杜晓东 朱晓磊 于 2019-11-13 设计创作，主要内容包括：一种用于级间线式分离装置的非对称V型槽、双点解锁式刚性包带,其特征包括刚性包带、包带端头、非对称V型槽、螺栓孔；刚性包带的内表面加工成非对称V型槽；包带端头均设置有螺栓孔；上分离体的下端面楔形凸缘与下分离体的上端面楔形凸缘对接构成非对称V型凸缘嵌入至刚性包带内表面非对称V型槽内,进而实现连接功能。与国内外现有技术相比,本发明的刚性包带具有可靠性高、安装简单便捷、对接面连接刚度好、端框界面接触应力和预紧力分布均匀、极限承载能力强等优点。刚性包带在自由状态下两侧开口很大,施加预紧力后,刚性包带四个自由端被拉紧,沿径向发生较大的弹性变形,利用刚性包带自身的弹性变形进而实现解锁后的快速脱离功能,满足未来大载荷大直径大规模的发射任务需求。(An asymmetric V-shaped groove and a double-point unlocking type rigid wrapping belt for an interstage linear separation device are characterized by comprising a rigid wrapping belt, wrapping belt ends, asymmetric V-shaped grooves and bolt holes; the inner surface of the rigid wrapping belt is processed into an asymmetric V-shaped groove; bolt holes are formed in the ends of the wrapping belts; the wedge-shaped flange on the lower end face of the upper separating body is in butt joint with the wedge-shaped flange on the upper end face of the lower separating body to form an asymmetric V-shaped flange which is embedded into an asymmetric V-shaped groove on the inner surface of the rigid wrapping tape, and then the connecting function is realized. Compared with the prior art at home and abroad, the rigid wrapping tape has the advantages of high reliability, simplicity and convenience in installation, good connection rigidity of the butt joint surfaces, uniform distribution of contact stress and pretightening force of the end frame interface, strong ultimate bearing capacity and the like. The openings of the two sides of the rigid wrapping belt are large in a free state, after pretightening force is applied, the four free ends of the rigid wrapping belt are tensioned, large elastic deformation occurs along the radial direction, the function of quick separation after unlocking is realized by utilizing the elastic deformation of the rigid wrapping belt, and the requirements of future large-load large-diameter large-scale launching tasks are met.)

1. An asymmetric V-shaped groove and a double-point unlocking type rigid wrapping belt for an interstage linear separation device are characterized by comprising a rigid wrapping belt (1), a wrapping belt end (2), an asymmetric V-shaped groove (3) and a bolt hole (4); the inner surface of the rigid wrapping tape (1) is processed to form an asymmetric V-shaped groove (3); bolt holes (4) are formed in the wrapping belt ends (2); the lower end face wedge-shaped flange (7) of the upper separating body (5) is in butt joint with the upper end face wedge-shaped flange (70) of the lower separating body (6) to form an asymmetric V-shaped flange (8) which is embedded into the asymmetric V-shaped groove (3) on the inner surface of the rigid wrapping tape (1), and then the connecting function is realized.

2. The asymmetric V-shaped groove double-point unlocking type rigid wrapping tape for the interstage line type separation device is characterized in that the rigid wrapping tape (1) adopts a double-opening split type structure, the rigid wrapping tapes on two sides are symmetrically arranged, and the structure size is completely the same.

3. An asymmetric V-groove, double-point unlocking type rigid belt for an interstage line type separation device according to claim 1, characterized in that the belt end (2) is installed at the free end of the rigid belt (1); the angle of the reinforcing rib of the end (2) of the wrapping tape is 30 degrees; the end (2) of the wrapping belt is provided with a bolt hole (4) for connecting an unlocking device.

4. The asymmetric V-shaped groove and double-point unlocking type rigid wrapping belt for the interstage line type separation device according to claim 1, characterized in that the angle of an upper inclined plane of the asymmetric V-shaped groove (3) ranges from 5 degrees to 45 degrees, and the angle of a lower inclined plane ranges from 3 degrees to 30 degrees; the inner surface of the asymmetric V-shaped groove (3) is adhered with a layer of composite material.

Technical Field

The invention relates to the technical field of carrier rocket payload separation structures, in particular to an asymmetric V-shaped groove and double-point unlocking type rigid wrapping belt for a payload separation device.

Background

Payload separation is the last link of the launch task of the whole carrier rocket, is one of the most critical links, and directly influences the success or failure of the launch task. According to the connection form of the payload separating device, the device comprises a point type separating device and a line type separating device. The point type separating device mainly comprises an explosive bolt and a separating nut device, and the line type separating device mainly refers to a belting separating device. Compared with a point type separating device, the bag belt separating device has the advantages of high reliability, good connection rigidity, strong bearing capacity and the like, and is the most widely applied effective load separating device at home and abroad at present. The bag belt separating device is applied to a space flight separating system from the beginning of the 20 th century in the foreign countries, and generally comprises a bag belt, a bag belt connector, a V-shaped block, an unlocking initiating explosive element, a capturing device and other parts. A belting of the belting separating device is made of thin steel belts, the belting is very flexible, and pre-tightening force is applied by utilizing the length direction deformation generated after the belting is pulled, so that the flexible belting separating device is called. The axial installation space required for installing the wrapping tape of the flexible wrapping tape separating device is large, and the flexible wrapping tape separating device is difficult to use under the condition of limited space; in addition, the wrapping belt is relatively flexible, so that the restraint of the tension spring and the limiting spring on the wrapping belt is relatively poor, and the radial dynamic envelope of the unlocking motion is relatively large; meanwhile, the bag belt has weak rigidity, and the risk that the V-shaped block is separated from the end frame is high under the condition of large tensile load; moreover, the flexible wrapping tape unlocking device mostly adopts explosive bolts, and the unlocking time is too fast (less than 1ms), so that the pre-tightening force is released too fast, and the separation impact is large; the rigid straps can effectively solve the problems. At present, relevant reports of integral rigid wrapping belts exist, and the integral rigid wrapping belts solve the defects of low bearing efficiency, large separation impact, low pretightening force uniformity, poor operation convenience and the like of the flexible wrapping belts. However, the integral rigid wrapping tape has some defects, such as uneven stress distribution of the integral rigid wrapping tape, uneven contact stress distribution of the completely pre-tightened rear end frame interface, lower limit bearing capacity and the like.

Disclosure of Invention

The invention aims to solve the technical problems and provides an asymmetric V-shaped groove and double-point unlocking type rigid wrapping belt for a payload separating device.

In order to solve the technical problems, the invention provides the following technical scheme:

an asymmetric V-shaped groove and double-point unlocking type rigid wrapping belt for an interstage linear separation device is characterized by comprising a rigid wrapping belt 1, a wrapping belt end 2, an asymmetric V-shaped groove 3 and a bolt hole 4; the inner surface of the rigid wrapping tape 1 is processed to form an asymmetric V-shaped groove 3; bolt holes 4 are formed in the ends 2 of the wrapping belts; the lower end face wedge-shaped flange 7 of the upper separating body 5 is in butt joint with the upper end face wedge-shaped flange 70 of the lower separating body 6 to form an asymmetric V-shaped flange 8 which is embedded into the asymmetric V-shaped groove 3 on the inner surface of the rigid wrapping tape 1, and then the connecting function is realized.

As a preferred technical scheme of the invention, the rigid wrapping tape 1 adopts a double-opening split structure, the rigid wrapping tapes on two sides are symmetrically arranged, and the structural sizes are completely the same.

As a preferred technical scheme of the invention, the wrapping tape end 2 is arranged at the free end part of the rigid wrapping tape 1; the angle of the reinforcing rib at the end 2 of the wrapping tape is 30 degrees; the end 2 of the wrapping tape is provided with a bolt hole 4 for connecting an unlocking device.

As a preferred technical scheme of the invention, the angle range of the upper inclined plane of the asymmetric V-shaped groove 3 is 5-45 degrees, and the angle range of the lower inclined plane is 3-30 degrees; the inner surface of the asymmetric V-shaped groove 3 is adhered with a layer of composite material.

The invention has the following beneficial effects: compared with the prior art at home and abroad, the invention has the advantages of high reliability, good connection rigidity of the butt joint surfaces, uniform distribution of contact stress and pretightening force, strong ultimate bearing capacity and the like. Compared with the traditional flexible wrapping belt, the rigid wrapping belt has obvious advantages in the aspects of bearing efficiency, axial installation space, dynamic envelope control, convenience in operation, safety and the like. Compared with an integral rigid belting, the invention adopts a split rigid belting structure, and the force transmission path of the belting is reduced by 1 time in the pre-tightening process, so that the stress of the belting and the contact stress of the contact surface of the end frame are more uniformly distributed, and the axial pre-tightening load and the ultimate bearing capacity of the end frame are obviously improved. Meanwhile, double-point unlocking is adopted, and compared with single-point unlocking of the whole bag belt, the reliability is higher. In addition, double-point unlocking is adopted, compared with single-point unlocking of the whole belting, the rebound path of the belting is reduced by 1 time after unlocking, and the disengagement time is obviously reduced. In conclusion, the split type rigid wrapping belt has the advantages of being simple and convenient to install, uniform in stress distribution of the wrapping belt after pre-tightening, uniform in contact stress distribution of the contact interface of the end frame, capable of achieving multiple increase of the ultimate bearing capacity and the like, and meets the requirements of large-load, large-diameter and large-scale launching tasks in the future.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the overall construction of the rigid harness of the present invention prior to installation;

FIG. 2 is a schematic view of the overall structure of the rigid harness of the present invention after installation;

FIG. 3 is a schematic cross-sectional view of a rigid strap of the present invention;

FIG. 4 is a schematic cross-sectional view of the rigid wrapping tape and the separator of the present invention;

FIG. 5 is a schematic view of the end of the rigid strap of the present invention;

description of reference numerals: 1. a rigid strap; 2. the ends of the wrapping belts; 3. an asymmetric V-shaped groove; 4. bolt holes; 5. an upper separator; 6. a lower separator; 7. a lower end face wedge-shaped flange; 70. a wedge-shaped flange on the upper end surface; 8. an asymmetric V-shaped flange;

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, which are provided for illustration and explanation, and are not intended to limit the present invention.