CN113084725A

Movatterモバイル変換

Info

Publication number: CN113084725A
Application number: CN202110276148.8A
Authority: CN
Inventors: 刘道坤; 陈昌将; 薛牧遥; 孙晓娇; 余新乐; 沈铁华; 刘乡芸; 汤飘平; 纪晓婷; 王燕宾
Original assignee: Shanghai Power Equipment Research Institute Co Ltd
Current assignee: Shanghai Power Equipment Research Institute Co Ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-07-09
Anticipated expiration: 2041-03-15
Also published as: CN113084725B

Abstract

Translated fromChinese

一种固体轨控发动机喷管堵盖环形定位装置，包括：压圈、定位片、连接螺钉；压圈本体采用内凹形设计结构；定位片采用弓形设计结构，根据固体轨控发动机喷管堵盖的布置方式，作出沿周向间隔一定角度布置；压圈与定位片采用不锈钢金属材料。本发明的固体轨控发动机喷管堵盖环形定位装置在某型号固体轨控发动机装配过程中高效、可靠的解决了喷管堵盖周向水平定位以及径向有效配合的问题，大幅度的提高了固体轨控发动机装配效率及产品的一次装配合格率。

An annular positioning device for plugging a nozzle of a solid rail control engine, comprising: a pressure ring, a positioning piece, and a connecting screw; the pressure ring body adopts a concave design structure; The arrangement of the cover is arranged at a certain angle along the circumferential direction; the pressure ring and the positioning piece are made of stainless steel metal materials. The annular positioning device for the nozzle plug cover of the solid orbital control engine of the present invention efficiently and reliably solves the problems of circumferential horizontal positioning and radial effective coordination of the nozzle blockage cover in the assembly process of a certain type of solid orbital control engine, and greatly improves the The assembly efficiency of the solid orbit control engine and the first-time assembly qualification rate of the product are measured.

Description

Solid rail-controlled engine spray pipe blocking cover annular positioning device

Technical Field

The invention relates to an annular positioning device for a solid rail-controlled engine nozzle blocking cover, and relates to the field of solid rocket engines.

Background

The nozzle blocking cover is one of important parts in the structure of the solid rail-controlled engine, is used as an external protection device of the nozzle of the solid rail-controlled engine, is distributed on the outer surface of the solid rail-controlled engine, needs to bear the aerodynamic load in the flying process of a missile, keeps the aerodynamic profile, provides protection for the internal structure of the nozzle and provides support for the installation of other parts; on the other hand, the solid rail control engine can be reliably opened when working, and the working requirement of the solid rail control engine is met.

In the design of the nozzle blocking cover of the solid rail-controlled engine, in order to ensure the one-time assembly qualification rate and the product reliability of the product, on the premise of meeting the overall use requirement, the horizontal and radial position positioning problem of the nozzle blocking cover in the engine assembly process is mainly solved.

The current solid rail-controlled engine nozzle blanking cover horizontal and radial position positioning mode comprises: the horizontal positioning tool of the single spray pipe blanking cover or the visual method can only singly solve the positioning problem of a certain spray pipe blanking cover, cannot ensure the accuracy and consistency of the horizontal positions of all the spray pipe blanking covers around the engine, is difficult to ensure the assembly quality of products by the original method, reduces the one-time assembly qualification rate of the products, and increases the consumption and waste of manpower and financial resources.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: overcome prior art's not enough, provide a solid rail accuse engine nozzle blanking cover annular positioner, include: a pressing ring, a positioning sheet and a connecting screw; the pressing ring body adopts an inward concave design structure; the positioning pieces are in an arch design structure and are arranged at certain angles along the circumferential direction according to the arrangement mode of the solid rail-controlled engine spray pipe blocking covers; the pressing ring and the positioning sheet are made of stainless steel metal materials. The annular positioning device for the nozzle block cover of the solid rail-controlled engine efficiently and reliably solves the problems of circumferential horizontal positioning and radial effective matching of the nozzle block cover in the assembling process of a certain type of solid rail-controlled engine, and greatly improves the assembling efficiency of the solid rail-controlled engine and the one-time assembling qualification rate of products.

The purpose of the invention is realized by the following technical scheme:

an annular positioning device for a solid rail-controlled engine nozzle blocking cover comprises a pressing ring, a connecting bolt and a positioning sheet;

the pressing ring is annular, a groove is formed in the pressing ring, and a plurality of threaded holes which are uniformly distributed along the circumference are formed in the groove; a connecting bolt is arranged in each threaded hole;

two ends of any connecting bolt are respectively arranged at the inner side and the outer side of the pressing ring;

the end part of each connecting bolt, which is positioned at the inner side of the pressing ring, is connected with a positioning sheet for positioning the plugging cover;

to every spacer, all adopt bow-shaped structure, both ends all are equipped with the boss for with the interface cooperation on the blanking cover, bow-shaped structure's the middle part than both ends thickening.

The press ring and the positioning sheet of the positioning device are all made of stainless steel materials.

In the positioning device, the end part of each connecting bolt, which is positioned at the outer side of the pressing ring, is used as a clamping part for adjusting the penetration depth of the connecting bolt into the pressing ring.

In the positioning device, each positioning sheet is provided with a blind hole; after the connecting bolt penetrates through the pressing ring, the end part positioned on the inner side of the pressing ring is screwed into the blind hole of the positioning sheet.

In the positioning device, the boss is in an inclined trapezoidal structure.

In the positioning device, the inclination angle of the bottom of the boss relative to the inner horizontal plane of the positioning sheet is 6-7 degrees.

In the positioning device, the protruding height of the boss on the positioning sheet is 2-4 mm.

In the positioning device, two sides of the upper end surface of the boss are chamfered.

In the positioning device, the ratio of the pitch of the connecting bolt to the inner diameter of the pressing ring is 1: (450-500); and the ratio of the diameter of the connecting bolt to the inner diameter of the pressing ring is 1: (65-72).

Compared with the prior art, the invention has the following beneficial effects:

(1) the invention provides a novel rail-controlled engine spray pipe plugging cover positioning device which is simple in structure, strong in operability and high in assembly efficiency;

(2) the positioning device can meet the requirements of positioning the horizontal and radial positions of the blocking cover of the spray pipe, ensures the realization of the product function of the solid rail-controlled engine, improves the one-time assembly qualification rate and reliability of the solid rail-controlled engine, improves the assembly efficiency of the product, and reduces the cost of manpower and financial resources;

(3) the positioning device can ensure that the same sections of all the spray pipe blanking covers arranged along the circumferential direction of the solid rail control engine can be positioned in the same horizontal line, so that the consistency and the coaxiality of the horizontal positions of all the spray pipe blanking covers are ensured;

(4) the positioning device pre-tightens the positioning plate through the connecting screw, so that the matching effectiveness of all spray pipes and the blocking cover arranged along the circumferential direction of the solid rail control engine and the consistency of the radial depth of the blocking cover of the spray pipes are ensured, and the quality of products is further improved;

(5) the positioning device realizes self-adaptation of positioning of the nozzle blocking covers of the engines with different elastic diameters by changing the length of the connecting screw, thereby achieving the purpose of integrating the positioning device, saving production resources and improving economic benefits.

Drawings

FIG. 1 is a schematic view of an annular positioning device for a nozzle cap of a solid rail-controlled engine according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic view of an annular positioning device for a nozzle cap of a solid rail-controlled engine, which is applied to the solid rail-controlled engine and comprises: pressing ring 1, locatingplate 2, connecting screw 3. The pressing ring 1 and thepositioning plate 2 are made of the same stainless steel metal material and are radially limited through a connecting screw 3. The pressing ring 1 and thepositioning sheet 2 form a positioning whole through a connecting screw 3.

The profile of clamping ring 1 belongs to annular structure, and the hoop interval is 30 evenly arranged 12M 5's connecting screw hole, for connecting screw's installation provides the support, and clamping ring axial width is 10mm, and the radial straight diameter of inner circle is 360mm, and the outer lane is radial to be 380 mm. When in design, the structural strength is ensured, meanwhile, the structural design idea that the circumferential direction is inwards concave to reduce the passive quality is adopted, the width of the groove is 6mm, the depth of the groove is 4mm, the sizes of two sides are symmetrically designed, and the thickness is 2 mm.

Thepositioning plate 2 belongs to an arch structure, is compact in design structure, and strictly controls the occupied space of the positioning plate while ensuring the functional performance. Spacer axial length 44mm, radial length 6.5mm, it is 8mm wide, spacer both ends design boss, the boss shape is slope trapezium structure, the inboard horizontal plane inclination of the spacer that the boss bottom is for is 6.5, the boss is 3mm for the horizontal plane height, thickness is 1.9mm, C0.5 chamfer is beaten to the up end both sides, the boss is machine-shaping together with the spacer, guarantee with rail accuse engine spray tube blanking cover mechanical interface complex precision. In order to ensure that the positioning plate is not deformed when bearing the radial pretightening force of the connecting screw. The middle part of the positioning sheet is provided with a thickened area, the height of the thickened area is 1mm relative to the horizontal plane of the inner side of the positioning sheet, and the width of the thickened area is consistent with that of the positioning sheet. The outer end face of the positioning sheet is provided with a round blind hole with the diameter of phi 6.0mm, the depth of the hole is 1mm, and the center of the hole is positioned at the center of the profile of the positioning sheet. The hole has the main functions of providing an effective acting point for the pre-tightening of the connecting screw, ensuring that the connecting screw cannot deflect and turn over during pre-tightening, and ensuring the positioning effectiveness.

The specification of the connecting screw 3 is selected from GB/T818-2000, M5 multiplied by 30, the number is 12, and the connecting screw is made of stainless steel materials. The device is mainly used for connecting the pressing ring 1 and thepositioning sheet 2 during design and is used for radially pre-tightening the pressing ring 1, so that the precision requirements of radial effective matching and circumferential horizontal positioning of the spray pipe plugging cover are met. In the actual use process, in order to meet the positioning requirement of the rail-controlled engine nozzle blocking covers with the same structure and different diameters, connecting screws with different lengths can be selected, so that the self-adaption of positioning of the engine nozzle blocking covers with different elastic diameters is realized, and the purpose of integrating the positioning device is achieved.

Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.

Claims

1. An annular positioning device for a solid rail-controlled engine nozzle blocking cover is characterized by comprising a pressing ring, a connecting bolt and a positioning sheet;

2. The positioning device as set forth in claim 1, wherein the pressing ring and the positioning plate are made of stainless steel.

3. The positioning device as set forth in claim 1, wherein an end of each of the connecting bolts located outside the pressing ring serves as a clamping portion for adjusting a depth of penetration of the connecting bolt into the pressing ring.

4. The positioning device according to claim 1, wherein each positioning plate is provided with a blind hole; after the connecting bolt penetrates through the pressing ring, the end part positioned on the inner side of the pressing ring is screwed into the blind hole of the positioning sheet.

5. The positioning device according to any one of claims 1 to 4, wherein the boss is shaped as an inclined trapezoidal structure.

6. The positioning device as set forth in claim 5, wherein the bottom of the boss is inclined at an angle of 6 ° to 7 ° with respect to the inner horizontal surface of the positioning piece.

7. The positioning device according to claim 5, wherein the projection height of the boss on the positioning piece is 2mm to 4 mm.

8. The positioning device as set forth in claim 5, wherein both sides of the upper end surface of the boss are chamfered.

9. The positioning device according to any one of claims 1 to 4, wherein the ratio of the pitch of the connecting bolt to the inner diameter of the pressing ring is 1: (450-500); and the ratio of the diameter of the connecting bolt to the inner diameter of the pressing ring is 1: (65-72).