CN112392564A - Connection structure of outer loop machine casket and radials - Google Patents
Connection structure of outer loop machine casket and radials Download PDFInfo
- Publication number
- CN112392564A CN112392564A CN202011270836.5A CN202011270836A CN112392564A CN 112392564 A CN112392564 A CN 112392564A CN 202011270836 A CN202011270836 A CN 202011270836A CN 112392564 A CN112392564 A CN 112392564A
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- Prior art keywords
- plate
- nut
- outer ring
- hole
- ring casing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000013011 mating Effects 0.000 claims description 7
- 230000006978 adaptation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
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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
- F16B37/00—Nuts or like thread-engaging members
-
- 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
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
The application belongs to the technical field of aeroengine design, in particular to connection structure of outer loop machine casket and radials includes: an outer ring casing provided with a fitting platform and a first bolt hole; the end face of the radial plate is provided with a second bolt hole, and the plate surface of the radial plate is provided with a nut mounting hole; a bolt; the nut comprises a nut head and steps, and arc matching surfaces are arranged on two sides of the nut head; the locking plate comprises a bottom plate, side plates, top plates and a limiting plate, wherein a first through hole is formed in the bottom plate, and the two top plates are close to each other to form a second through hole. According to the connecting structure of the outer ring casing and the spoke plate, the nut can rotate around the axis of the nut mounting hole so as to adjust the direction of the threaded hole, the bolt is guaranteed to be only pulled and not to be bent, and the safety and reliability of connection are enhanced; in addition, when the thread is damaged, the nut can be replaced without replacing the spoke plate, so that the cost is saved; further, the nut can be restricted to a suitable position in a narrow space where the tool cannot reach, and the direction can be adjusted in a small amount.
Description
Technical Field
The application belongs to the technical field of aero-engine design, and particularly relates to a connecting structure of an outer ring casing and a spoke plate.
Background
The bearing casing of the aircraft engine is usually used as a connecting structure of a web plate, a strut and an outer ring casing. The outer ring casing is cylindrical 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 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.
When the excircle of the outer ring casing has taper in the axial direction and needs to be matched with the radial plate by a conical surface, the taper angle of the annular surface and the taper angle of the matching surface of the end surface of the radial plate inevitably have difference due to processing errors, so that the plane matched with the bolt head on the outer ring casing is not perpendicular to or coaxial with the axis of the threaded hole of the radial plate, and the bolt is not only pulled but also bent after being screwed down, so that the bolt is easy to lose efficacy.
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
In order to solve at least one of the above technical problems, the present application provides a connection structure of an outer ring casing and a web.
The application discloses a connecting structure of an outer ring casing and a spoke plate, wherein a matching platform is arranged at the matching position of the outer ring casing and the spoke plate, and a first bolt hole is formed in the matching platform in a penetrating mode along the direction vertical to the plane of the platform; and
a second bolt hole matched with the first bolt hole is formed in the end face of one end, close to the outer ring casing, of the radial plate, in addition, a nut mounting hole penetrates through the plate face of one end, close to the outer ring casing, of the radial plate, and the axis of the nut mounting hole vertically penetrates through the axis of the second bolt hole;
the connection structure of outer loop quick-witted casket and radials still includes:
one end of the bolt can sequentially penetrate through the first bolt hole and the second bolt hole from one side, far away from the spoke plate, of the matching platform and then enter the nut mounting hole;
the nut comprises a nut head and a step which are both annular and coaxially and fixedly connected, the outer diameter of the nut head is larger than the outer diameter of the step, the inner diameter of the nut head is equal to the inner diameter of the step, a threaded hole is formed in an inner annular surface formed by the nut head and the step together, and in addition, two opposite sides of the nut head are arranged into arc matching surfaces with the axial direction perpendicular to the direction of the threaded hole and are used for matching with an inner cylindrical surface of a nut mounting hole;
the locking plate, including the bottom plate, seted up on the bottom plate with the first through-hole of the second bolt hole looks adaptation of radials, relative both sides are fixed with the curb plate that is predetermined angle with the bottom plate respectively on the bottom plate, and at every the end fixing of curb plate has a roof parallel with the bottom plate, wherein, bottom plate, two blocks of curb plates and two roof constitute the cross-section jointly and become down trapezoidal structure, in addition, be close to position department each other at two roof, form jointly one with the second through-hole of the step looks adaptation of nut, further with curb plate vertically both sides on the bottom plate, can bend the limiting plate that has a piece to extend outward respectively.
According to at least one embodiment of this application, the both sides curb plate lateral surface on the locking plate sets up to the arc surface of axis direction perpendicular to screw hole direction.
According to at least one embodiment of this application on the both sides face of radials, and be located nut mounting hole bottom is provided with the locking plate fixed slot, the locking plate sets up during nut mounting hole is inside, the limiting plate of its both sides can buckle downwards to with correspond the locking plate fixed slot cooperation of side.
According to at least one embodiment of the application, the width of locking plate fixed slot is greater than the width of cooperation department limiting plate.
According to at least one embodiment of the application, the bottom of the upper step of the nut is provided with a closing-in self-locking structure.
According to at least one embodiment of the present application, the number of the first bolt holes on each of the mating platforms is two, and the first bolt holes are distributed on the mating platforms along the axial direction of the outer ring casing.
The application has at least the following beneficial technical effects:
according to the connecting structure of the outer ring casing and the spoke plate, the nut can rotate around the axis of the nut mounting hole so as to adjust the direction of the threaded hole, the bolt is guaranteed to be only pulled and not to be bent, and the safety and reliability of connection are enhanced; in addition, a threaded hole is not directly drilled in the wheel disc, when the thread is damaged, the nut can be replaced, the wheel disc does not need to be replaced, and the cost is saved; furthermore, the nut is fixed by the locking plate in the assembling process, so that the nut is limited in a proper position in a narrow space inaccessible by a tool, and the direction can be adjusted in a small range.
Drawings
FIG. 1 is a perspective view of a portion of the connection structure of the outer ring casing and the web plate of the present application;
FIG. 2 is a partial cross-sectional view of the outer ring casing and web attachment structure of the present application;
FIG. 3 is a partial structural view of an outer ring casing in the connecting structure of the outer ring casing and the web according to the present application;
FIG. 4 is a partial structural view of a web in the connection structure of the outer ring casing and the web according to the present application;
FIG. 5 is a schematic structural diagram of a nut in the connection structure of the outer ring casing and the web of the present application;
FIG. 6 is a schematic view of a locking plate of the connection structure of the outer ring casing and the web plate according to the present application;
FIG. 7 is a schematic structural view of the connection structure of the outer ring casing and the web according to the present application after the nut and the locking plate are mounted;
FIG. 8 is a schematic structural view of a nut and a locking plate mounted on a web (the locking plate is not bent) in the connection structure of the outer ring casing and the web according to the present application;
fig. 9 is a schematic structural diagram of a nut and a locking plate mounted on a web (the locking plate is bent) in the connection structure of the outer ring casing and the web according to the present application.
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 the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
It should be understood that technical terms such as "central", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., which may be referred to in the description of the present application, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the scope of the present application.
The connection structure of the outer ring casing and the web plate of the present application will be described in further detail with reference to fig. 1 to 9.
The application discloses connection structure of outer loop machine casket and radials is provided with a cooperation platform 11 with every radials 2 cooperation department on outer loop machine casket 1, has run through along perpendicular its platform plane direction on cooperation platform 11 and has seted up first bolt hole 12. In this embodiment, preferably, the number of the first bolt holes 12 on each mating platform 11 is two, and the first bolt holes 12 are distributed on the mating platform 11 along the axial direction of the outer ring casing 1, so that the connection is more stable.
Furthermore, a second bolt hole 21 matched with the position and the number of the first bolt holes 12 is formed in the end face of the spoke plate 2 close to the outer ring casing 1; as shown in fig. 4, a nut mounting hole 22 is formed through a plate surface of the web 2 at an end close to the outer ring casing 1, and an axis of the nut mounting hole 22 passes through an axis of the second bolt hole 21 in a perpendicular manner.
Further, the connection structure of the outer ring casing and the spoke plate further comprises a bolt 3, a nut 4 and a locking plate 5.
Specifically, as shown in fig. 1 and 2, one end of the bolt 3 can pass through the first bolt hole 12 and the second bolt hole 21 in sequence from the side of the mating platform 11 away from the web 2 and then enter the nut mounting hole 22.
As shown in fig. 5, the nut 4 includes a nut head 41 and a step 42 which are both annular and coaxially and fixedly connected, the outer diameter of the nut head 41 is larger than the outer diameter of the step 42, the inner diameter of the nut head 41 is equal to the inner diameter of the step 42, and a threaded hole is formed in an inner annular surface formed by the nut head 41 and the step 42, so as to be adapted to the bolt 3; further, opposite sides of the nut head 41 are provided with circular arc fitting surfaces 411 whose axial directions are perpendicular to the screw hole direction, for fitting with the inner cylindrical surface of the nut attachment hole 22. It should be noted that the nut 4 can rotate around the axis of the nut mounting hole 22 or move along the axis of the nut mounting hole 22 by the arrangement of the circular arc fitting surface 411.
Furthermore, as the tool cannot reach the position of the nut 4 when the bolt 3 is screwed, the locking plate 5 is arranged; specifically, as shown in fig. 6, the locking plate 5 includes a bottom plate 51, the bottom plate 51 is provided with a first through hole 511 adapted to the second bolt hole 21 of the web 2, two opposite sides of the bottom plate 51 are respectively fixed with a side plate 52 forming a predetermined angle with the bottom plate 51, and an end of each side plate 52 is fixed with a top plate 53 parallel to the bottom plate 51; wherein, bottom plate 51, two blocks of curb plates 52 and two roof 53 constitute the structure that the cross-section becomes down trapezoidal jointly, in addition, in the mutual position that is close to of two roof 53, form a second through-hole 531 with the step 42 looks adaptation of nut 4 jointly, further, on bottom plate 51 with curb plate 52 perpendicular both sides, respectively outwards extend has a limiting plate 54 that can buckle for during the assembly restriction nut 4 removes along radials 2 thickness direction.
Further, as shown in fig. 7, it is preferable that the outer side surfaces of the side plates 52 on both sides of the locking piece 5 are provided with arc surfaces whose axial directions are perpendicular to the direction of the threaded hole, and also, the locking piece 5 is allowed to rotate around the axis of the nut mounting hole 22 or move along the axis of the nut mounting hole 22 together with the nut 4 by the arrangement of the arc surfaces. In addition, the bottom of the upper step 42 of the nut 4 is preferably set to be a closing-up self-locking structure, so that the bolt 3 can be ensured not to be loosened after being screwed in place.
Further, as shown in fig. 4, it is preferable that lock plate fixing grooves 23 are formed at both side surfaces of the web 2 and at the bottom of the nut mounting hole 22, and when the lock plate 5 is disposed inside the nut mounting hole 22, the limiting plates 54 at both sides thereof can be bent downward to be engaged with the lock plate fixing grooves 23 at the corresponding side.
When the connection structure of the outer ring casing and the spoke plate is assembled, the nut 4 and the locking plate 5 are assembled together, and the arc matching surface 411 and the arc surface of the side surfaces of the nut 4 and the locking plate 5 are ensured to be positioned on the same cylindrical surface, as shown in fig. 7; then the nut 4 and the locking plate 5 are plugged into the nut mounting hole 22 on the spoke plate 2 together, at this time, the nut 4 and the locking plate 5 can rotate around the axis of the nut mounting hole 22 or move along the axis of the nut mounting hole 22, as shown in fig. 8; further, the threaded hole of the nut 4 and the second bolt hole 21 on the web plate 2 are placed to be approximately coincident with each other until the axis is aligned, the bolt 3 can be screwed into the nut 4 to assist positioning, the limit plates 54 at the two ends of the lock plate 5 are bent into the lock plate fixing grooves 23 on the web plate 2, and then the bolt 3 is screwed off, at this time, the nut 4 cannot move along the thickness direction of the web plate 2, and can rotate slightly around the axis of the nut mounting hole 22 (the lock plate fixing grooves 23 can be slightly wider than the upper limit plate 54 of the lock plate 5, so that the lock plate 5 and the nut 4 are limited not to deviate from the correct position too much), as shown; finally, the web plate 2 is attached to the matching surface of the outer ring casing 1, the bolt holes are aligned, the bolt 3 is screwed into the nut 4, the nut 4 can slightly rotate around the axis of the nut mounting hole 22, when the bolt 3 is screwed to be attached to the matching platform 11 on the outer ring casing 1, the nut 4 can automatically rotate to the direction perpendicular to the threaded hole and the matching platform 11, so that the function of connecting the web plate 2 and the outer ring casing 1 is achieved, and the bolt 3 is guaranteed to be pulled and not to be bent, as shown in fig. 1.
In summary, according to the connection structure of the outer ring casing and the spoke plate, the nut can rotate around the axis of the nut mounting hole so as to adjust the direction of the threaded hole, so that the bolt is ensured to be only pulled and not to be bent, and the safety and reliability of connection are enhanced; in addition, a threaded hole is not directly drilled in the wheel disc, when the thread is damaged, the nut can be replaced, the wheel disc does not need to be replaced, and the cost is saved; furthermore, the nut is fixed by the locking plate in the assembling process, so that the nut is limited in a proper position in a narrow space inaccessible by a tool, and the direction can be adjusted in a small range.
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 (6)
1. A connecting structure of an outer ring casing and a spoke plate is characterized in that a matching platform (11) is arranged at the matching position of the outer ring casing (1) and the spoke plate (2), and a first bolt hole (12) penetrates through the matching platform (11) along the direction vertical to the plane of the platform; and
a second bolt hole (21) matched with the first bolt hole (12) is formed in the end face of one end, close to the outer ring casing (1), of the radial plate (2), in addition, a nut mounting hole (22) penetrates through the plate face of one end, close to the outer ring casing (1), of the radial plate (2), and the axis of the nut mounting hole (22) vertically penetrates through the axis of the second bolt hole (21);
the connection structure of outer loop quick-witted casket and radials still includes:
one end of the bolt (3) can penetrate through the first bolt hole (12) and the second bolt hole (21) in sequence from one side, far away from the spoke plate (2), of the matching platform (11) and then enter the nut mounting hole (22);
the nut (4) comprises a nut head (41) and a step (42) which are both annular and coaxially and fixedly connected, the outer diameter of the nut head (41) is larger than the outer diameter of the step (42), the inner diameter of the nut head (41) is equal to the inner diameter of the step (42), a threaded hole is formed in an inner annular surface formed by the nut head and the step, in addition, two opposite sides of the nut head (41) are provided with arc matching surfaces (411) with the axial direction perpendicular to the threaded hole direction, and the arc matching surfaces are used for being matched with the inner cylindrical surface of the nut mounting hole (22);
the locking plate (5) comprises a bottom plate (51), a first through hole (511) matched with the second bolt hole (21) of the spoke plate (2) is formed in the bottom plate (51), two opposite sides of the bottom plate (51) are respectively fixed with a side plate (52) which forms a preset angle with the bottom plate (51), and a top plate (53) parallel to the bottom plate (51) is fixed to the end of each side plate (52), wherein the bottom plate (51), the two side plates (52) and the two top plates (53) jointly form a structure with an inverted trapezoid cross section, in addition, at the mutually close position of the two top plates (53), a second through hole (531) matched with the step (42) of the nut (4) is formed together, two sides of the bottom plate (51) perpendicular to the side plates (52) are respectively provided with a bendable limiting plate (54) which extends outwards.
2. The connecting structure of an outer ring casing and a web plate according to claim 1, wherein the outer side surfaces of the side plates (52) on both sides of the locking piece (5) are arranged to be circular arc surfaces with the axial direction perpendicular to the direction of the threaded hole.
3. The connecting structure of an outer ring casing and a spoke plate according to claim 1, wherein locking plate fixing grooves (23) are formed in two side faces of the spoke plate (2) and located at the bottom of the nut mounting hole (22), and when the locking plate (5) is arranged in the nut mounting hole (22), the limiting plates (54) on two sides can be bent downwards to be matched with the locking plate fixing grooves (23) on the corresponding side.
4. The connecting structure of an outer ring casing and a web according to claim 3, wherein the width of the locking piece fixing groove (23) is larger than the width of the engagement position restricting plate (54).
5. The connecting structure of an outer ring casing and a web plate according to claim 1, characterized in that the bottom of the step (42) on the nut (4) is provided with a closing-in self-locking structure.
6. The outer ring casing and web connection structure according to claim 1, wherein the number of first bolt holes (12) on each of said mating platforms (11) is two, distributed on said mating platforms (11) in the axial direction of said outer ring casing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011270836.5A CN112392564A (en) | 2020-11-13 | 2020-11-13 | Connection structure of outer loop machine casket and radials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011270836.5A CN112392564A (en) | 2020-11-13 | 2020-11-13 | Connection structure of outer loop machine casket and radials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112392564A true CN112392564A (en) | 2021-02-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011270836.5A Pending CN112392564A (en) | 2020-11-13 | 2020-11-13 | Connection structure of outer loop machine casket and radials |
Country Status (1)
| Country | Link |
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| CN (1) | CN112392564A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062780A (en) * | 2021-05-06 | 2021-07-02 | 中国航发湖南动力机械研究所 | Turbine outer ring axial limit structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6358001B1 (en) * | 2000-04-29 | 2002-03-19 | General Electric Company | Turbine frame assembly |
| CN1688824A (en) * | 2002-12-10 | 2005-10-26 | 德事隆国际公司 | Cage nut assembly having a flexible cage |
| CN105317559A (en) * | 2014-05-29 | 2016-02-10 | 北京航空航天大学 | Turbine rear force bearing case integrally connected to rectification blade cascade |
| CN111963534A (en) * | 2020-08-18 | 2020-11-20 | 中国航发沈阳发动机研究所 | Self-locking connection structure of annular casing and spoke plate |
-
2020
- 2020-11-13 CN CN202011270836.5A patent/CN112392564A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6358001B1 (en) * | 2000-04-29 | 2002-03-19 | General Electric Company | Turbine frame assembly |
| CN1688824A (en) * | 2002-12-10 | 2005-10-26 | 德事隆国际公司 | Cage nut assembly having a flexible cage |
| CN105317559A (en) * | 2014-05-29 | 2016-02-10 | 北京航空航天大学 | Turbine rear force bearing case integrally connected to rectification blade cascade |
| CN111963534A (en) * | 2020-08-18 | 2020-11-20 | 中国航发沈阳发动机研究所 | Self-locking connection structure of annular casing and spoke plate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062780A (en) * | 2021-05-06 | 2021-07-02 | 中国航发湖南动力机械研究所 | Turbine outer ring axial limit structure |
| 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 |
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Application publication date: 20210223 |