CN113084725B - Solid rail accuse engine spout blanking cover annular positioning device - Google Patents
Solid rail accuse engine spout blanking cover annular positioning device Download PDFInfo
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- CN113084725B CN113084725B CN202110276148.8A CN202110276148A CN113084725B CN 113084725 B CN113084725 B CN 113084725B CN 202110276148 A CN202110276148 A CN 202110276148A CN 113084725 B CN113084725 B CN 113084725B
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- pressing ring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- Mechanical Engineering (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
A solid rail engine nozzle plug annular positioning device, comprising: a pressing ring, a locating piece and a connecting screw; the pressing ring body adopts a concave design structure; the positioning sheet adopts an arch design structure, and is arranged at certain intervals along the circumferential direction according to the arrangement mode of the nozzle blocking cover of the solid rail control engine; the pressing ring and the locating plate are made of stainless steel metal materials. The annular positioning device for the nozzle blanking cover of the solid rail control engine, disclosed by the invention, can be used for efficiently and reliably solving the problems of circumferential horizontal positioning and radial effective matching of the nozzle blanking cover in the assembly process of the solid rail control engine of a certain model, and greatly improving the assembly efficiency of the solid rail control engine and the one-time assembly qualification rate of products.
Description
Technical Field
The invention relates to a solid rail control engine nozzle blanking cover annular positioning device, and relates to the field of solid rocket engines.
Background
The jet pipe blanking cover is one of important parts in the structure of the solid track control engine, is used as an external protection device of the jet pipe of the solid track control engine, is distributed on the outer surface of the solid track control engine, and is required to bear pneumatic load in the missile flight process, keep a pneumatic profile, provide protection for the inner structure of the jet pipe and provide support for the installation of other parts; on the other hand, the solid rail control engine needs to be reliably opened when working, and the working requirement of the solid rail control engine is met.
In the design of a solid rail control engine nozzle plug, in order to ensure the one-time assembly qualification rate and the product reliability of products, on the premise of meeting the overall use requirement, the horizontal and radial position positioning problem of the nozzle plug in the engine assembly process is solved.
The horizontal and radial position positioning modes of the nozzle blocking cover of the existing solid rail control engine comprise: the visual method or the horizontal positioning tool of the single spray pipe blanking cover can only solve the positioning problem of a certain spray pipe blanking cover singly, the accuracy and the consistency of the horizontal positions of all spray pipe blanking covers in the circumferential direction of an engine cannot be ensured, the assembly quality of products is difficult to ensure by the original method, the one-time assembly qualification rate of the products is reduced, and the consumption and the waste of manpower and financial resources are increased.
Disclosure of Invention
The invention aims to solve the technical problems that: overcomes the defects of the prior art and provides a solid rail control engine spray pipe blanking cover annular positioning device, which comprises: a pressing ring, a locating piece and a connecting screw; the pressing ring body adopts a concave design structure; the positioning sheet adopts an arch design structure, and is arranged at certain intervals along the circumferential direction according to the arrangement mode of the nozzle blocking cover of the solid rail control engine; the pressing ring and the locating plate are made of stainless steel metal materials. The annular positioning device for the nozzle blanking cover of the solid rail control engine, disclosed by the invention, can be used for efficiently and reliably solving the problems of circumferential horizontal positioning and radial effective matching of the nozzle blanking cover in the assembly process of the solid rail control engine of a certain model, and greatly improving the assembly efficiency of the solid rail control engine and the one-time assembly qualification rate of products.
The invention aims at realizing the following technical scheme:
an annular positioning device for a nozzle plug of a solid rail control engine comprises a pressing ring, a connecting bolt and a positioning sheet;
the pressing ring is in a ring shape, 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; each threaded hole is internally provided with a connecting bolt;
both 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 blanking cover;
each positioning sheet adopts an arch structure, two ends of each positioning sheet are provided with bosses which are matched with interfaces on the blanking covers, and the middle part of each arch structure is thicker than the two ends.
The positioning device, the pressing ring and the positioning sheet are made of stainless steel materials.
According to the positioning device, the end part of each connecting bolt, which is positioned at the outer side of the pressing ring, is used as the 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 passes through the pressing ring, the end part positioned at the inner side of the pressing ring is screwed into the blind hole of the positioning sheet.
The boss of the positioning device is of an inclined trapezoid structure.
According to the positioning device, the inclination angle of the bottom of the boss relative to the horizontal plane of the inner side of the positioning piece is 6-7 degrees.
According to the positioning device, the protruding height of the boss on the positioning sheet is 2-4 mm.
The positioning device comprises a boss, wherein two sides of the upper end face of the boss are chamfered.
According to the positioning device, the ratio of the screw 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 injection pipe plug positioning device of a rail control engine, which has the advantages of simple structure, strong operability and high assembly efficiency;
(2) The positioning device can meet the requirements of the horizontal and radial position positioning of the nozzle blanking cover, ensures the realization of the product functions of the solid rail control engine, improves the one-time assembly qualification rate and the reliability of the solid rail control 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 cross section of all the spray pipe blocking covers of the solid rail control engine which are arranged along the circumferential direction can be positioned on the same horizontal line, thereby ensuring the consistency and coaxiality of the horizontal positions of all the spray pipe blocking covers;
(4) The positioning device ensures the effectiveness of the matching of all spray pipes and the blocking covers which are arranged along the circumferential direction of the solid rail control engine and the consistency of the radial depth of the blocking covers of the spray pipes through the pre-tightening of the positioning sheets by the connecting screws, and further improves the quality of products;
(5) The positioning device provided by the invention realizes the self-adaption of positioning of the engine nozzle plug covers with different spring diameters by changing the length of the connecting screw, thereby achieving the purpose of uniform positioning of the positioning device, saving production resources and improving economic benefits.
Drawings
Fig. 1 is a schematic diagram of a solid rail control engine nozzle plug annular positioning device provided in an embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
FIG. 1 is a schematic view of a solid rail engine nozzle closure ring positioning device of the present invention, the ring positioning device being applied to a solid rail engine, comprising: clamping ring 1, spacer 2, connecting screw 3. The pressing ring 1 and the locating plate 2 are made of the same stainless steel metal material, and are radially limited through the connecting screw 3. The pressing ring 1 and the locating piece 2 form a locating whole through the connecting screw 3.
The profile of the pressing ring 1 belongs to an annular structure, 12M 5 connecting screw holes are uniformly arranged at intervals of 30 degrees in the circumferential direction, support is provided for installation of connecting screws, the axial width of the pressing ring is 10mm, the radial straight diameter of an inner ring is 360mm, and the radial direction of an outer ring is 380mm. When designing, when guaranteeing structural strength, adopt the structural design theory that annular indent reduces negative quality, recess width is 6mm, and the groove depth is 4mm, and two turns on one's side the size and designs for symmetry, thickness is 2mm.
The locating plate 2 belongs to an arch structure, is compact in design structure, and can strictly control the occupied space of the locating plate while guaranteeing the functional performance. The axial length of the locating piece is 44mm, the radial length is 6.5mm, the width is 8mm, bosses are designed at two ends of the locating piece, the boss is of an inclined trapezoid structure, the inclined angle of the inner side horizontal plane of the locating piece relative to the bottom of the boss is 6.5 degrees, the boss is 3mm relative to the height of the horizontal plane, the thickness is 1.9mm, C0.5 chamfers are formed on two sides of the upper end face, and the boss and the locating piece are processed and molded together to ensure the accuracy matched with a mechanical interface of a jet pipe plug of a rail control engine. In order to ensure that the positioning sheet is not deformed when the radial pretightening force of the connecting screw is carried. The middle part of the locating piece is provided with a thickening area, the height of the thickening area is 1mm relative to the horizontal plane of the inner side of the locating piece, and the width of the thickening area is consistent with the locating piece. The outer end face of the locating plate is provided with a round blind hole with the diameter phi of 6.0mm, the hole depth is 1mm, and the center of the hole is positioned at the center of the locating plate-shaped surface. The hole has the main function of providing an effective acting point for the pretension of the connecting screw, ensuring that the connecting screw cannot deviate and turn over when pretension is carried out, and ensuring the effectiveness of positioning.
The specification of the connecting screw 3 is GB/T818-2000, M5 multiplied by 30, and the number of the connecting screws is 12, and the connecting screw is made of stainless steel. The device is mainly used for connecting the pressing ring 1 and the locating piece 2 in design and is used for radially pre-tightening the pressing ring 1, so that the precision requirements of radial effective matching and circumferential horizontal locating of the nozzle blanking cover are met. In the actual use process, in order to realize the positioning requirement of the same structure and different diameters of the rail control engine spray pipe plug covers, the connecting screws without lengths can be selected, so that the self-adaption of the positioning of the engine spray pipe plug covers with different spring diameters is realized, and the aim of the uniform positioning of the positioning device is fulfilled.
What is not described in detail in the present specification is a well known technology to those skilled in the art.
Although the present invention has been described in terms of the preferred embodiments, it is not intended to be limited to the embodiments, and any person skilled in the art can make any possible variations and modifications to the technical solution of the present invention by using the methods and technical matters disclosed above without departing from the spirit and scope of the present invention, so any simple modifications, equivalent variations and modifications to the embodiments described above according to the technical matters of the present invention are within the scope of the technical matters of the present invention.
Claims (4)
1. The annular positioning device for the nozzle blocking cover of the solid rail control engine is characterized by comprising a pressing ring, a connecting bolt and a positioning piece;
the pressing ring is in a ring shape, 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; each threaded hole is internally provided with a connecting bolt;
both 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 blanking cover; the connecting bolt is also used for pre-tightening the positioning sheet;
each positioning sheet adopts an arch structure, two ends of each positioning sheet are provided with bosses for being matched with the interfaces on the blanking covers, and the middle part of each arch structure is thicker than the two ends;
the pressing ring and the positioning sheet are made of stainless steel materials;
the boss is in an inclined trapezoid structure, and the inclination angle of the inner side horizontal plane of the positioning piece relative to the bottom of the boss is 6-7 degrees;
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;
each locating piece is provided with a blind hole; after the connecting bolt passes through the pressing ring, the end part positioned at the inner side of the pressing ring is screwed into the blind hole of the positioning sheet; the blind holes are used for providing an acting point for the pretension of the connecting bolts, so that the connecting bolts cannot deviate and overturn during pretension, and positioning is ensured;
the annular positioning device for the nozzle blocking covers of the solid rail control engine can enable the same cross section of all blocking covers of the solid rail control engine, which are arranged along the circumferential direction, to be positioned on the same horizontal line;
in order to realize the positioning of the injection pipe plugging cover of the solid rail control engine with the same structure and different diameters, connecting screws with different lengths are selected, so that the self-adaption of the positioning of the injection pipe plugging cover of the solid rail control engine with different spring diameters is realized, and the purpose of the annular positioning device of the injection pipe plugging cover of the solid rail control engine is achieved.
2. The positioning device according to claim 1, wherein the protruding height of the boss on the positioning sheet is 2 mm-4 mm.
3. The positioning device of claim 1 wherein the upper end face of the boss is chamfered on both sides.
4. The positioning device of claim 1 wherein the ratio of the pitch of the connecting bolt to the inner diameter of the clamping 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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110276148.8A CN113084725B (en) | 2021-03-15 | 2021-03-15 | Solid rail accuse engine spout blanking cover annular positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110276148.8A CN113084725B (en) | 2021-03-15 | 2021-03-15 | Solid rail accuse engine spout blanking cover annular positioning device |
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| Publication Number | Publication Date |
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| CN113084725A CN113084725A (en) | 2021-07-09 |
| CN113084725B true CN113084725B (en) | 2023-06-16 |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5571068A (en) * | 1977-08-12 | 1996-11-05 | Baxter International Inc. | Centrifuge assembly |
| CN201752843U (en) * | 2010-07-20 | 2011-03-02 | 中国航空工业集团公司洛阳电光设备研究所 | S-shaped cylindrical thin-wall part cylindrical surface processing tooling |
| FR3011884B1 (en) * | 2013-10-16 | 2018-06-15 | Arianegroup Sas | PROPULSION CHAMBER FOR ROCKER AND METHOD FOR MANUFACTURING SUCH CHAMBER |
| KR101564684B1 (en) * | 2015-05-20 | 2015-11-03 | 주식회사 오성이엔지서비스 | A jig for disassembling of niddle for injector nozzle of diesel engine |
| CN205342958U (en) * | 2015-12-21 | 2016-06-29 | 中国海洋石油总公司 | Circumferential location mechanism of circumference distribution part |
| CN106696279A (en) * | 2016-12-14 | 2017-05-24 | 中航飞机股份有限公司西安飞机分公司 | Bonding forming method for composite conduit |
| GB2592337B (en) * | 2019-05-07 | 2023-04-26 | A P Racing Ltd | Friction clutch |
| CN110774215B (en) * | 2019-12-05 | 2021-07-20 | 中国航发四川燃气涡轮研究院 | Overlock device of aero-engine circumferential sealing device and overlock method thereof |
| CN211332271U (en) * | 2019-12-27 | 2020-08-25 | 福建惠丰电机有限公司 | Tool for intersecting line of lifting ring base of vehicle motor |
| CN212553563U (en) * | 2020-06-04 | 2021-02-19 | 沈阳一帆科技有限公司 | Water pump shell blanking cover pressure equipment anchor clamps |
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