CN111963534B - Self-locking connection structure of annular casing and spoke plate - Google Patents
Self-locking connection structure of annular casing and spoke plate Download PDFInfo
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- CN111963534B CN111963534B CN202010829340.0A CN202010829340A CN111963534B CN 111963534 B CN111963534 B CN 111963534B CN 202010829340 A CN202010829340 A CN 202010829340A CN 111963534 B CN111963534 B CN 111963534B
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- nut
- bolt hole
- locking plate
- bolt
- adjustment
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- 238000009434 installation Methods 0.000 claims description 11
- 239000007769 metal material Substances 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/243—Flange connections; Bolting arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/10—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate gripping parts moved into their final position in relation to the body of the device by a separate operation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
The application provides a auto-lock connection structure of annular machine casket and radials includes: the wheel disc is provided with a first bolt hole perpendicular to the end face and a second bolt hole perpendicular to the thickness direction of the wheel disc and communicated with the first bolt hole; the connecting bolt penetrates through the annular casing and extends into the spoke plate bolt hole; the nut is arranged in the second bolt hole and is used for being matched with the connecting bolt; and the adjusting locking plate is arranged in the second bolt hole and supported on the nut, two sides of the adjusting locking plate are provided with mutually symmetrical elastic adjusting parts, and the position of the nut supported by the adjusting locking plate is adjusted through the elastic adjusting parts. This application is through setting up support nut's adjusting shim for fill in the radials in the nut axis direction adjustable, thereby can avoid connecting bolt and the out of plumb of nut axis, disalignment problem, guarantee that connecting bolt only draws not to receive the bending, avoid the bolt to receive the bending in the work.
Description
Technical Field
The application belongs to the technical field of engine structural design, and particularly relates to a self-locking connecting structure of an annular casing and a spoke plate.
Background
The bearing casing of the aircraft engine usually adopts a structural form that a radial plate or a strut is connected with an outer ring casing. The outer ring casing is generally in a cylindrical structure in the axial direction, holes are formed in the outer ring casing, threaded holes are formed in the end face of the web plate, and screws or bolts penetrate through the outer ring casing and are screwed into the threaded holes in the web plate, so that the web plate and the outer ring casing are fixed.
However, when the outer circle of the outer ring casing has a taper and is matched with the web plate on the taper surface, the difference is inevitably generated between the annular taper surface and the web plate end surface on the taper angle matching surface due to machining errors, which easily causes that the axis of the bolt passing through the outer ring casing is not perpendicular to or coaxial with the axis of the threaded hole of the web plate, and the bolt is not only pulled but also bent after being tightened, thus easily causing the bolt failure.
In addition, directly beat the screw hole on the radials, if the screw thread destroys, whole radials all will be changed, are unfavorable for practicing thrift the cost.
Disclosure of Invention
It is an object of the present application to provide a self-locking connection of an annular case and a web that solves or mitigates at least one problem of the background art.
The technical scheme of the application is as follows: the utility model provides a self-locking connection structure of annular machine casket and radials, includes:
the wheel disc type engine comprises an annular casing with a taper and a wheel disc with an end face, wherein the end face is matched with the taper, the wheel disc is provided with a first bolt hole perpendicular to the end face and a second bolt hole perpendicular to the thickness direction of the wheel disc and communicated with the first bolt hole;
the connecting bolt penetrates through the annular casing and extends into the spoke plate bolt hole;
the nut is arranged in the second bolt hole and is used for being matched with the connecting bolt; and
set up in the second bolt hole and support in the adjustment locking plate of nut, the both sides of adjustment locking plate have the elastic adjustment portion of mutual symmetry, through the elastic adjustment portion adjusts the position of the nut that the adjustment locking plate supported.
In an embodiment of the present application, the tapered surface of the annular casing has a mounting platform having a thickness greater than a wall thickness of the annular casing, and the mounting platform is provided with a bolt hole for the connection bolt to pass through.
In an embodiment of the present application, the nut includes:
the nut body and installation department, the nut body with have the step between the installation department, wherein, the overall dimension of nut body is greater than the overall dimension of installation department.
In an embodiment of the present application, at least a part of a nut body of the nut is an arc surface, and the arc surface is used for being matched with the second bolt hole.
In an embodiment of the present application, the nut body or the mounting portion of the nut is at least partially self-locking at the point of closure.
In one embodiment of the present application, the elastic adjustment portion of the adjustment lock plate includes:
from kink and the position that is located that the body of adjustment locking plate upwards buckles the supporting part that the kink is terminal and is on a parallel with the adjustment locking plate body, the supporting part is formed with semi-circular breach, sets up the supporting part through the symmetry and constitutes the notch that is used for the plane of support nut and is used for holding the nut installation department.
In an embodiment of this application, it has the fixed part to extend along the predetermined direction from adjusting the locking plate body, the fixed part is used for buckling the back and laminates with the side of radials, realizes adjusting the mutual fixed of locking plate and radials, wherein the predetermined direction is radials thickness direction.
In an embodiment of the present application, the bent portion of the adjustment locking piece has an arc portion for fitting with the second bolt hole.
In an embodiment of the present application, the adjusting locking piece is made of an elastic metal material.
In an embodiment of the present application, the side of radials has certainly the fixed slot that the second bolt hole extends out, the fixed slot holds the fixed part of adjustment locking plate.
The application provides a self-locking connection structure of annular machine casket and radials can make the nut direction adjustable with bolt complex to only bear the tensile load after guaranteeing the bolt tensioning, and do not bear bending load, thereby strengthen the fail safe nature of connecting. In addition, the structure of this application is not directly tapped hole on the radials, can directly change the nut when the screw thread damages, and need not change the radials, has practiced thrift the cost.
Drawings
In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.
Fig. 1 is an overall schematic view of a self-locking connection structure of an annular casing and a web plate according to the present application.
Fig. 2 is a schematic structural view of an annular casing according to the present application.
Fig. 3 is a schematic view of the structure of the web in the present application.
Fig. 4 is a schematic view of a nut structure in the present application.
Fig. 5 is a schematic view of an adjusting locking plate according to the present application.
Fig. 6 is a schematic view illustrating the installation of the nut and the adjusting locking plate in the present application.
Fig. 7 is a schematic view of the nut and the adjustment locking plate mounted with the spoke plate in the present application.
Fig. 8 is a schematic view of the nut and the adjustment locking plate being mounted and then mounted with the web plate in the present application.
Fig. 9 is a schematic view of the connection bolt and nut of the present application.
Reference numerals:
1-an annular casing, 11-an installation platform and 12-a platform bolt hole;
2-spoke plate, 21-first bolt hole, 22-second bolt hole, 23-fixing groove;
3-connecting the bolt with the connecting rod,
4-nut, 41-nut body, 42-mounting part, 43-step end face, 44-cambered surface and 45-bolt hole;
5-adjusting locking piece, 5A-upper elastic adjusting part, 5B-lower elastic adjusting part, 51-bending part, 52-supporting part, 53A-right fixing part, 53B-left fixing part, 54-arc part, 55-notch and 56-elastic space.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.
In order to overcome the problem that in the prior art, in the process of matching the annular casing and the spoke plate with the taper surfaces, the bolt and the nut are prone to generating non-coaxial lines, the application provides a self-locking connecting structure of the annular casing and the spoke plate, the structure can allow holes between the annular casing and the spoke plate to have certain non-coaxial lines, and the nut can be adjusted coaxially.
As shown in fig. 1, in order to meet the requirement of connecting a web plate and an outer ring casing, the self-locking connection structure of an annular casing and a web plate provided by the present application mainly includes an annular casing 1, a web plate 2, a connecting bolt 3, a nut 4 and an adjusting locking plate 5.
As shown in fig. 2, the annular casing 1 has a tapered face at which the web 2 is connected to the annular casing 2.
In the application, the outer side surface of the position corresponding to the spoke plate on the taper surface of the annular casing 2 is provided with the mounting platform 11 with the thickness larger than the thickness of other positions of the casing, and the mounting platform 11 is used for reinforcing the structure at the position so as to improve the connection strength between the mounting platform and the spoke plate 2. At least two platform bolt holes 12 are provided in the mounting platform 11. It will be appreciated that the number of platform attachment holes 12 will generally depend on the number of bolt holes provided in the relative positions of the webs 2.
As shown in fig. 3, the web 2 is substantially rectangular, with its upper portion bent at a small angle towards the annular casing 11. In the upper part of the web 2 there is an end face for engagement with the mounting platform 11, said end face being generally in the form of a circular arc face formed by rotation of the engine axis. On the end face 2 of the web 2 there are arranged first bolt holes 21 substantially perpendicular to said direction of taper, the first bolt holes 21 corresponding in position and number to the platform bolt holes 12 on the ring casing 1. Furthermore, second bolt holes 22 are provided in the thickness direction of the web 2, the second bolt holes 22 being typically through holes for receiving nuts 4 (not shown). The axis of the second bolt hole is perpendicular to and intersects the axis of the first bolt hole.
In a preferred embodiment of the present application, a fixing groove 23 is provided downward from the second bolt hole 23 along the side of the web 2, and the fixing groove 23 is used for fixing the adjustment locking piece 5. It should be noted that the fixing groove 23 may be slightly wider than the bendable fixing portion of the adjustment locking piece 5.
As shown in fig. 4, the nut 4 is a round nut, which is disposed in the second bolt hole 22 of the web 2 and is used for fixing the annular casing 1 and the web 2 in cooperation with the connecting bolt 3 passing through the annular casing 1 and the first bolt hole 21.
In an embodiment of the present application, the nut 4 is mainly composed of a nut body 41 and a mounting portion 42, wherein an outer dimension of the nut body 41 is larger than an outer dimension of the mounting portion 42, so that a step end surface 43 can be formed between the nut body 41 and the mounting portion 42, and the step end surface 43 is used for being matched and supported with the adjusting locking piece 5.
In the above-described embodiment of the present application, since the nut 4 is disposed in the second bolt hole 22, in order to prevent the occurrence of stress concentration therebetween, the side surface of the nut body 4 is processed into an arc surface having an axis direction perpendicular to the direction of the threaded hole so as to be fitted with the nut mounting hole in the web. It can be understood that, after the nut body 4 is placed in the second bolt hole, only two side faces of the nut body 4 are usually matched with the second bolt hole, so that the side faces of the nut body 4 only need to be provided with arc faces on the two side faces which are symmetrical. It should be noted that, the nut body 4 is processed by arc surfaces on both sides, and compared with the processing of all the arc surfaces in the circumferential direction, the transition part between the arc surface and the non-arc surface can also play a role in preventing the nut from rotating.
In the above embodiments of the present application, the nut body 41 and the mounting portion 42 of the nut 4 are at least partially closed and self-locked, so as to realize a self-locking nut function. It will be appreciated that the self-locking may be at the nut body 41 or may be closed at the mounting portion 42.
As shown, the adjustment locking piece 5 includes a body portion and two symmetrical elastic adjustment portions 5A/5B. Since the elastic adjustment portion 5A has the same structure as the elastic adjustment portion 5B, the elastic adjustment portion 5B will be described below.
The elastic adjustment portion 5B is composed of a bent portion 21 bent upward from the body portion of the adjustment lock plate 5 and a support portion 52 located at the end of the bent portion 52, the support portion 52 is substantially parallel to the body portion of the adjustment lock plate 5 to form a support surface, and an elastic space 56 is provided between the support surface and the body of the adjustment lock plate 5. The support portion 52 is formed with a semicircular notch, and when the two elastic adjustment portions 5A/5B are combined together, a notch 55 for the mounting portion 41 of the nut 4 to pass through can be formed, and the support surface is supported on the step end surface 43 of the nut 4, and the two are matched.
In an embodiment of the present application, a circular arc surface 52 is provided at a partial position of the bent portion 51, and the circular arc surface 52 can be matched with the second bolt hole 23 on the web 2.
In the above embodiment of the present application, the adjusting locking piece 5 has the bendable fixing portions 53A/53B extending from the body portion thereof along both sides of the predetermined direction, and after the adjusting locking piece 5 is disposed in the second bolt hole 23, the fixing portions 53A/53B are bent to be engaged with the fixing grooves 23 of the web 2, so that the adjusting locking piece 5 and the web 2 can be relatively fixed, and the function of limiting the movement of the nut 4 along the thickness direction of the web 2 during assembly can be realized. When the connecting bolt 1 is screwed down, the position tool of the nut 2 cannot be reached, and the adjusting locking plate in the application can play a self-locking function.
As shown in fig. 6, when the self-locking connection structure is assembled, the mounting portion 43 of the nut 2 is first inserted into the notch 55 of the adjustment locking piece 5, and the nut 4 and the adjustment locking piece 5 are mounted together. It should be noted that, when the nut 4 and the adjusting locking plate 5 are assembled, it is necessary to ensure that the circular arc surfaces of the side surfaces of the nut 4 and the adjusting locking plate 5 are on the same cylindrical surface.
As shown in fig. 7, the nut 4 and the adjusting locking piece 5 are then inserted into the second bolt hole 23 of the web, and the nut 4 and the adjusting locking piece 5 can rotate around the axis of the second bolt hole 23 or move along the axis of the second bolt hole 23. The threaded holes of the nuts 4 and the second bolt holes 23 on the web plate 2 are arranged to be approximately coincident with each other until the axes are aligned, the connecting bolts 1 can be screwed into the nuts 4 for auxiliary positioning, the fixing portions 53A/53B at the two ends of the adjusting locking plate 5 are bent into the locking plate fixing grooves 23 on the web plate 2, and the connecting bolts 1 are screwed continuously, so that the nuts 4 cannot move in the thickness direction of the web plate 2, and can rotate slightly around the axes of the first bolt holes 21, as shown in fig. 8.
When radials 2 and annular machine casket 1 are connected, the space is narrow and small, can't utilize the position of instrument restriction nut 4, and adjustment locking plate 5 has solved the position restriction problem of nut 4 in the installation.
As shown in fig. 9, the web plate 2 is attached to the mating end face of the annular casing 1, the bolt holes are aligned, the connecting bolt 1 is screwed into the nut 4, and since the nut 4 can slightly rotate around the axis of the first bolt hole 21, when the connecting bolt 1 is screwed to be attached to the platform on the annular casing 1, the nut 4 automatically rotates to the direction perpendicular to the threaded hole and the platform, so that the connecting function of the web plate 4 and the annular casing 1 is realized, and the connecting bolt 1 is ensured to be only pulled and not to be bent.
The application provides an annular machine casket and auto-lock connection structure of radials utilizes the direction adjustable nut of filling in radials 2 through the adjusting shim who sets up support nut for radials 2's screw hole axis is adjustable, has avoided the out of plumb of connecting bolt and nut axis, disalignment problem, guarantees that connecting bolt only draws and does not receive the bending, avoids the bolt to receive the bending in the work, has strengthened the fail safe nature of structure. In addition, in the structure of this application, directly not beat the screw hole on the radials, can change the nut when the screw thread damages, and need not change the radials, practiced thrift the cost, and utilize the adjustment locking plate fixation nut in assembling process in this application, realized again can the small-scale adjustment direction in the inaccessible narrow and small space of instrument with the nut restriction in suitable position.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (4)
1. The utility model provides a self-locking connection structure of annular machine casket and radials, its characterized in that includes:
the wheel disc type engine comprises an annular casing with a taper and a wheel disc with an end face, wherein the end face is matched with the taper, the wheel disc is provided with a first bolt hole perpendicular to the end face and a second bolt hole perpendicular to the thickness direction of the wheel disc and communicated with the first bolt hole;
the connecting bolt penetrates through the annular casing and extends into the spoke plate bolt hole;
the nut is arranged in the second bolt hole and used for being matched with the connecting bolt, the nut is provided with a nut body and an installation part, the overall dimension of the nut body is larger than that of the installation part, so that a step is formed between the nut body and the installation part, at least part of the nut body is an arc surface, and the arc surface is used for being matched with the second bolt hole;
set up in the second bolt hole and support in the adjustment locking plate of nut, the both sides of adjustment locking plate have the elasticity adjustment portion of mutual symmetry, through the elasticity adjustment portion is adjusted the position of the nut that the adjustment locking plate supported, the elasticity adjustment portion of adjustment locking plate include from the kink of the body of adjustment locking plate upwards buckling and being located the terminal supporting part that is on a parallel with the adjustment locking plate body of kink, the supporting part is formed with semi-circular breach, sets up the notch that the supporting part constitutes the plane that is used for supporting the nut and is used for holding the nut installation department through the symmetry, and self-adjusting locking plate body extends along the predetermined direction has the fixed part, the fixed part is used for laminating with the side of radials after buckling, realizes the mutual fixed of adjustment locking plate and radials, wherein the predetermined direction is radials thickness direction, the kink of adjustment locking plate has arc portion, the arc-shaped part is matched with the second bolt hole, and the adjusting locking plate is made of an elastic metal material.
2. The self-locking connection of an annular case and a web as recited in claim 1, wherein the tapered surface of the annular case has a mounting platform having a thickness greater than a wall thickness of the annular case, the mounting platform being provided with bolt holes for passage of the connecting bolts.
3. The self-locking connection of an annular casing to a web as recited in claim 1, wherein the nut body or mounting portion of the nut is at least partially self-locking.
4. The self-locking connection of an annular casing to a web as claimed in claim 1 wherein the side of the web has a securing slot extending from the second bolt hole, the securing slot receiving a securing portion of the adjustment locking tab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010829340.0A CN111963534B (en) | 2020-08-18 | 2020-08-18 | Self-locking connection structure of annular casing and spoke plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010829340.0A CN111963534B (en) | 2020-08-18 | 2020-08-18 | Self-locking connection structure of annular casing and spoke plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111963534A CN111963534A (en) | 2020-11-20 |
| CN111963534B true CN111963534B (en) | 2022-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010829340.0A Active CN111963534B (en) | 2020-08-18 | 2020-08-18 | Self-locking connection structure of annular casing and spoke plate |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392564A (en) * | 2020-11-13 | 2021-02-23 | 中国航发沈阳发动机研究所 | Connection structure of outer loop machine casket and radials |
| CN113062780B (en) * | 2021-05-06 | 2022-08-16 | 中国航发湖南动力机械研究所 | Turbine outer ring axial limit structure |
| CN114352625B (en) * | 2022-01-19 | 2023-11-03 | 中国航发沈阳发动机研究所 | Supporting plate nut structure convenient to replace |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US763049A (en) * | 1903-09-10 | 1904-06-21 | American Lock Washer Company | Nut-lock. |
| GB602540A (en) * | 1945-10-16 | 1948-05-28 | Harry Cruden | Improvements in or relating to joint fastenings for scaffolding or skeleton metal frames and like structures |
| WO2004053342A2 (en) * | 2002-12-10 | 2004-06-24 | Textron Inc. | Cage nut assembly having a flexible cage |
| US7192231B2 (en) * | 2004-04-05 | 2007-03-20 | Newfrey Llc | Cage nut with non-cross threading angled cage |
| CN101825135B (en) * | 2010-04-15 | 2014-03-12 | 海洋王照明科技股份有限公司 | Pressing sheet for fastening and fastening piece anti-loose structure |
| CN202612344U (en) * | 2012-05-14 | 2012-12-19 | 中国航空动力机械研究所 | Nut locking plate |
| CN202756384U (en) * | 2012-07-30 | 2013-02-27 | 河南航天精工制造有限公司 | Moving supporting plate self-locking nut and nut part thereof |
| FR3026447B1 (en) * | 2014-09-25 | 2016-11-25 | Electricite De France | KEY DEVICE FOR MAINTAINING AN NUT BRAKE |
| CN204327712U (en) * | 2014-11-28 | 2015-05-13 | 长城汽车股份有限公司 | Self-locking nut and self-locking device |
| CN204785057U (en) * | 2015-05-07 | 2015-11-18 | 中国航空工业集团公司沈阳发动机设计研究所 | Support structure |
| CN106837953A (en) * | 2015-12-07 | 2017-06-13 | 中航通飞研究院有限公司 | A kind of bolt connection form |
| CN206397896U (en) * | 2016-12-08 | 2017-08-11 | 中国南方电网有限责任公司超高压输电公司广州局 | A kind of locking fastening assembly and fastening structure |
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2020
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| CN111963534A (en) | 2020-11-20 |
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