CN103912386A - Synchronous ring mechanism of mode switch valve of variable-cycle engine - Google Patents
Synchronous ring mechanism of mode switch valve of variable-cycle engine Download PDFInfo
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Abstract
The invention relates to a synchronous ring mechanism of a mode switch valve of a variable-cycle engine and belongs to the technical field of high-performance gas turbine engines in the aerospace technique. A mode switch valve mechanism is used for changing the work state of the engine to adapt various flight conditions. The mode switch valve is arranged at the outlet of an outer duct of the engine and comprises a front section of an outer case, a rear section of the outer case, a valve sheet, a seal ring, a connecting rod, a synchronous ring, a front gas seal case, a rear gas seal case, a synchronous ring guide rail, an actuating cylinder and a synchronous ring guide groove. The synchronous ring mechanism of the mode switch valve of the variable-cycle engine mainly aims at the synchronous ring which moves axially along the engine under the actuation of the actuating cylinder and the motion of the synchronous ring is matched with the front section of the outer case. The invention provides four different synchronous ring structure schemes which are all capable of realizing motion function.
Description
Technical field
The present invention relates to a kind of synchronizing ring mechanism of variable cycle engine pattern changing valve, synchronizing ring can drive other component movement along the axial motion of motor, thereby change engine behavior to adapt to different flying conditions, belong to the high-performance gas turbogenerator technical field in aerospace engineering.
Background technique
Variable cycle engine is a kind of propulsion system with outstanding combination property, it the subsonic speed performance synthesis of the supersonic performance of turbojet engine and turbofan engine on a motor, compare with traditional little Bypass Ratio Turbofan Engine, variable cycle engine, in the time completing more difficult hybrid task, demonstrates huge potentiality in performance.
The variable cycle jet engine adjusting mechanism of typical modern mainly comprises three parts: pattern changing valve, front duct ejector and rear culvert channel injector.Wherein pattern changing valve is positioned at outer culvert import, plays the effect that opens and closes by-pass air duct together with rear culvert channel injector; After front duct ejector is arranged in main duct core drive fan, before high-pressure compressor, part intension air-flow again injection can be entered to outer culvert, play the effect that improves inlet fan surge margin; Rear culvert channel injector is positioned at the outer outlet port of containing after turbine, both can play the outer effect of containing flow that regulates together with pattern changing valve, also outer culvert airflow injection can be participated in to afterbunring in the core air-flow of turbine discharge, plays the effect of mixer.
Hence one can see that, and pattern changing valve is one of critical piece of variable cycle engine, and pattern changing valve is made up of outer casing leading portion, outer casing back segment, valve sheet, the ring of obturaging, connecting rod, synchronizing ring, front envelope mechanism of qi casket, rear envelope mechanism of qi casket, synchronizing ring guide rail, pressurized strut, synchronizing ring guide groove etc.Its working principle is that pressurized strut drives synchronizing ring axial motion, and synchronizing ring drives some valve sheet motions of circumferential arrangement, and then changes bypass ratio, realizes the change circulatory function of motor.
In pattern changing valve, synchronizing ring is the critical component in structure, synchronizing ring is being born the power of pressurized strut outside, at interior several connecting rods that connecting, and then connecting valve sheet, synchronizing ring entirety also will coordinate with outer casing, along motor axial motion, therefore, the structural design of synchronizing ring is especially crucial.
US Patent No. Patent5048286 proposed a kind of mechanism of pattern changing valve in 1991.In this structure, synchronizing ring is arranged on outside casing, and the motion mode of synchronizing ring is circumferentially to rotate, and then drivening rod motion, and connecting rod drives valve sheet to rotate, thereby realizes regulatory function.This structure can ensure the synchronism of link motion, make the stressed even of connecting rod and valve sheet, but its shortcoming is to be subject to force direction complexity, and design difficulty is large.
Summary of the invention
The technical problem that the present invention solves is: overcome the deficiencies in the prior art, the synchronizing ring mechanism in a kind of variable cycle engine pattern changing valve is provided, change the large shortcoming of existing structure frictional force, improve its performance.
Technical solution of the present invention is: a kind of synchronizing ring mechanism of variable cycle engine pattern changing valve, comprises synchronizing ring, synchronizing ring guide rail and several synchronizing ring guide grooves; Synchronizing ring is to be installed on the annulus that the cross section of outer casing leading portion outside is " work " font, and synchronizing ring internal circumferential is arranged several synchronizing ring guide grooves, and synchronizing ring guide groove coordinates installations with synchronizing ring guide rail, thereby guarantee synchronizing ring is along the slip of engine axis direction front and back.Synchronizing ring design proposal comprises directly embedded four kinds of structures of roller type, line ball type, row formula ball type, linear bearing.
The roller type structure of described synchronizing ring, comprising: roller type synchronizing ring guide groove, outer casing roller raceway, axle, bearing, bearing protecting jacket, back-up ring, screw.Axle is fixed on roller type synchronizing ring guide groove by screw, bearing is installed on every axle and positions by back-up ring, and outer race only rolls in casing roller raceway outside.In order to the circumferential displacement of limits synchronization ring, outer race outside is surrounded by protecting jacket, in order to protect outer race in rolling process.
The line ball type structure of described synchronizing ring, comprising: line ball type synchronizing ring guide groove, line ball road, ball retainer, backing plate, ball, bolt, nut.By screw bolt and nut, ball retainer and backing plate are fixed in line ball type synchronizing ring guide groove; Ball is arranged on ball retainer and backing plate matches in the ring raceway forming; Ball moves in line ball road.
The row formula ball type structure of described synchronizing ring, comprising: row formula ball type synchronizing ring guide groove, row formula ball road, one side ball rack, two-sided ball rack, ball, bolt, nut.By screw bolt and nut, one side ball rack and two-sided ball rack are fixed in row formula ball type synchronizing ring guide groove; Ball is arranged on adjacent two ball racks and matches in the ring raceway forming; Ball moves in row formula ball road.
The direct Embedded Synchronous ring structure of linear bearing of described synchronizing ring, comprising: bearing guide groove, finished product linear bearing, bearing cap, bearing guide, screw.Finished product linear bearing is arranged in bearing guide groove and by bearing cap and screw location; Bearing guide is arranged on outer casing leading portion.Linear bearing outer ring and bearing guide groove interference fit, linear bearing ball moves on bearing guide.
The present invention's advantage is compared with prior art:
(1) the synchronizing ring guide rail the present invention is directed on four guide grooves and the casing that synchronizing ring internal circumferential arranges carries out multi-scheme design, can make in the course of the work all valve sheets synchronously rotate, change the large shortcoming of existing structure frictional force, stability and reliability is higher.
(2) rolling friction that in the present invention, the motion of the synchronizing ring of roller type structure is roller, frictional force is less.Process easy for installation simultaneously.
(3) rolling friction that in the present invention, the motion of line ball type synchronizing ring is ball, the row's ball that only distributes on the less synchronizing ring of frictional force cross section, structural thickness is less, can adapt to less installing space.
(4) rolling friction that in the present invention, the motion of row formula ball type synchronizing ring is ball, frictional force is less; Structure is easy to process, can, by one side ball rack and two-sided ball rack separate machined, combine installation.
(5) rolling friction that the motion of the direct Embedded Synchronous ring of cathetus bearing of the present invention is ball, frictional force is less; Linear bearing is finished product structure, easy for installation.
Brief description of the drawings
Fig. 1 is the assembling schematic diagram (cross section, connecting rod place) of pattern changing valve;
Fig. 2 is pattern changing valve partial 3 d figure;
Fig. 3 is roller type synchronizing ring assembling schematic diagram;
Fig. 4 is the synchronous annulate shaft schematic diagram of roller type, and wherein (a) is the planimetric map of axle, (b) is graphics;
Fig. 5 is the schematic diagram with the bearing of protecting jacket;
Fig. 6 is line ball type synchronizing ring assembling schematic diagram;
Fig. 7 is line ball type synchronizing ring ball retainer schematic diagram, and wherein (a) is the planimetric map of retainer, (b) is graphics;
Fig. 8 is line ball type synchronizing ring backing plate schematic diagram, and wherein (a) is the planimetric map of backing plate, (b) is graphics;
Fig. 9 is row formula ball type synchronizing ring assembling schematic diagram;
Figure 10 is row formula ball type synchronizing ring one side ball rack schematic diagram, and wherein (a) is the planimetric map of one side ball rack, (b) is graphics;
Figure 11 is the two-sided ball rack schematic diagram of row formula ball type synchronizing ring, and wherein (a) is the plan view of two-sided ball rack, (b) is plan view, is (c) graphics;
Figure 12 is the direct Embedded Synchronous ring two dimension of linear bearing erection drawing;
Figure 13 is the direct Embedded Synchronous ring of linear bearing partial 3 d figure;
In figure, numerical reference is described as follows:
1. outer casing leading portion; 2. outer casing back segment; 3. valve sheet; 4. the ring of obturaging; 5. connecting rod; 6. synchronizing ring; 7. front envelope mechanism of qi casket; 8. rear envelope mechanism of qi casket; 9. synchronizing ring guide rail; 10. pressurized strut; 11. synchronizing ring guide grooves;
A-1. roller type synchronizing ring guide groove; A-2. outer casing roller raceway; A-3. axle; A-4. bearing; A-5. bearing protecting jacket; A-6. back-up ring; A-7. screw.B-1. line ball type synchronizing ring guide groove; B-2. line ball road; B-3 ball retainer; B-4 backing plate; B-5 ball; B-6 bolt; B-7 nut.C-1. row formula ball type synchronizing ring guide groove; C-2 row formula ball road; C-3. one side ball rack; C-4. two-sided ball rack; C-5. ball; C-6. bolt; C-7 nut.D-1. bearing guide groove; D-2. finished product linear bearing; D-3. bearing cap; D-4. bearing guide; D-5. screw.
Embodiment
The present invention carries out multi-scheme design mainly for the synchronizing ring mechanism of existing variable cycle engine pattern changing valve, the residing position of the structure of present mode changing valve and synchronizing ring is as shown in Figure 1, 2: pattern changing valve is positioned at motor and contains import outward, it by: outer casing leading portion 1, outer casing back segment 2, valve sheet 3, obturage ring 4, connecting rod 5, synchronizing ring 6, front envelope mechanism of qi casket 7, rear envelope mechanism of qi casket 8, synchronizing ring guide rail 9, pressurized strut 10, synchronizing ring guide groove 11 etc. form.
The way of realization of overall structure function is: pressurized strut 10 is arranged on outer casing back segment 2, press by Precise Control of Oil, pressurized strut slide bar is moved forward and backward in pressurized strut, and then drive synchronizing ring 6 to move, the athletic meeting of synchronizing ring 6 drives and the motion of its hinged connecting rod 5, and then the valve sheet 3 of drive and rod hinge connection moves, and valve sheet 3 will rotate around itself and casing hinged place, in the time turning to corresponding position, realize the opening and closing of by-pass air duct.The design of front envelope mechanism of qi casket 7, rear envelope mechanism of qi casket 8 is in order to ensure that outer culvert air-flow does not leak.
Synchronizing ring 6 is for overlapping the annulus that the cross section of casing leading portion 1 outside is " work " font outside, synchronizing ring internal circumferential is arranged 4 synchronizing ring guide grooves 11, on outer casing leading portion 1, be designed with synchronizing ring guide rail 9 simultaneously, when installation, synchronizing ring 6 is overlapped outside on casing leading portion 1, synchronizing ring guide groove 11 and synchronizing ring guide rail 9 are coordinated upper, thereby ensure that synchronizing ring can be along slip before and after synchronizing ring guide rail.
The synchronizing ring guide rail 9 the present invention is directed on four synchronizing ring guide grooves 11 and the casing that synchronizing ring internal circumferential arranges carries out multi-scheme design.Change the large shortcoming of existing structure frictional force, improve its performance.Four kinds of organization plans are respectively roller type synchronizing ring, line ball type synchronizing ring, row formula ball type synchronizing ring, the direct Embedded Synchronous ring of linear bearing.
1. the synchronizing ring of roller type structure:
The erection drawing of roller type synchronizing ring as shown in Figure 3: roller type synchronizing ring is made up of synchronizing ring 6, roller type synchronizing ring guide groove a-1, outer casing roller raceway a-2, axle a-3, bearing a-4, bearing protecting jacket a-5, back-up ring a-6, screw a-7.Roller bodies in the present invention is bearing a-3.
The annexation of the each part of this structure is: axle a-3 is fixed on roller type synchronizing ring guide groove a-1 by screw a-7, bearing a-4 is installed on every axle and positions by back-up ring a-6, and bearing outer ring only rolls in casing roller raceway a-2 outside.In order to the circumferential displacement of limits synchronization ring, bearing outer ring outside is surrounded by bearing protecting jacket a-5, in order to protect bearing outer ring in rolling process.
In each roller type synchronizing ring guide groove a-1, lay side by side two groups of rotary roller.One group of rotary roller comprises that one with axle a-3, two bearing a-4, two bearing protecting jacket a-5, two back-up ring a-6, two screw a-7.
The way of realization of overall structure function is: pressurized strut 10 promotes synchronizing ring 6 axial motions, and rotate around axle a-3 bearing a-4 outer ring, and coordinates with outer casing roller raceway a-2, and then realizes the axial motion of synchronizing ring along casing.
Described synchronizing ring 6 main bodys are annulus part, and its cross section is " work " font, are circumferentially uniformly distributed some roller type synchronizing ring guide groove a-1 in synchronizing ring, design the geometrical shape of guide groove according to the cooperation of axle and guide groove.
Described outer casing roller raceway a-2, determines the size of raceway, thereby realizes the cooperation of bearing and raceway according to the size of bearing a-4.
Axle a-3 as shown in Figure 4: in Fig. 4, a figure is the planimetric map of axle; B figure is the graphics of axle.The intermediate portion cross section of axle is circular, and the cross section of two end portions is regular hexagon.On middle circular shaft part, be designed with the shaft shoulder, locate for bearing; Be designed with groove, for laying back-up ring, thus the axial motion of restriction bearing.Axle two end portions is positive six prisms, and the guide groove in three faces and the synchronizing ring of six prisms coordinates, thereby axle is positioned, and limits its rotation; Meanwhile, on a face of six prisms, be designed with tapped hole, can be by screw a-7 by fastening to axle a-3 and synchronizing ring 6.
Be bearing a-4 and bearing protecting jacket a-5 as shown in Figure 5: bearing a-4 is deep groove ball bearing, select the model of bearing according to the size of synchronizing ring upper rail.The inner ring of bearing a-4 and axle a-3 drive fit, positioned bearing a-4 by the shaft shoulder and back-up ring a-6.Described bearing protecting jacket a-5 is annulus part, designs the size of bearing protecting jacket according to the size of bearing a-4.For protecting bearing outer ring at rolling process.
Described back-up ring a-6 is circlip for shaft, selects the model of back-up ring according to the size of bearing.It is upper that back-up ring a-5 is arranged on axle a-3, the axial motion of restriction bearing a-4.
Described screw a-7 is fluting cone end Cock screw, selects large footpath and the length of screw according to the size of axle head six prismatic surfaces.Screw is for fastener shaft and synchronizing ring.
2. the synchronizing ring of line ball type structure:
The erection drawing of line ball type synchronizing ring as shown in Figure 6: line ball type synchronizing ring is made up of synchronizing ring 6, line ball type synchronizing ring guide groove b-1, line ball road b-2, ball retainer b-3, backing plate b-4, ball b-5, bolt b-6, nut b-7.
The annexation of the each part of this structure is: by bolt b-6 and nut b-7, ball retainer b-3 and backing plate b-4 are fixed in line ball type synchronizing ring guide groove b-1; Ball is arranged on ball retainer and backing plate matches in the ring raceway forming; Ball moves in line ball road.
The ball retainer b-3 that distributes in each line ball type synchronizing ring guide groove b-1, a backing plate b-4, and synchronizing ring 6 and ball retainer b-3, backing plate b-4 are coupled together with bolt b-6 and nut b-7.The ball that distributing in circulating line between ball retainer and backing plate, wherein has two row balls can expose a part, and the line ball road b-2 on part ball and the outer casing exposing coordinates.
The way of realization of overall structure function is: pressurized strut 10 promotes synchronizing ring 6 axial motions, and the rolling by ball b-5 on line ball road b-2 realizes the axial motion of synchronizing ring with respect to casing.
Described synchronizing ring 6 is annulus part, and its cross section is " work " font, is circumferentially uniformly distributed some line ball type synchronizing ring guide groove b-1 in synchronizing ring, designs the size of guide groove according to the size of ball retainer b-3 and backing plate b-4.Meanwhile, on guide groove, be designed with tapped hole, be used for and bolt b-6 cooperation.
Described line ball road b-2, determines the size of raceway according to the size of ball b-5, thereby realizes the cooperation of ball and raceway.
Ball retainer b-3 as shown in Figure 7: in Fig. 7, a figure is the planimetric map of retainer; B figure is the graphics of retainer.Ball retainer b-3 main body is cuboid, is wherein designed with the symmetrical line annular rolling ball channel of left and right two circles; On retainer, be designed with tapped hole, be used for and bolt b-6 cooperation; Retainer lower surface is designed with circular counterbore, is used for mounting nuts b-6, makes nut not expose the lower surface of retainer.
Backing plate b-4 as shown in Figure 8: in Fig. 8, a figure is the planimetric map of backing plate; B figure is the graphics of backing plate.The main body of backing plate is cuboid, and its base dimension is identical with ball retainer b-3.Wherein be designed with the symmetrical annular rolling ball channel of left and right two circle, in the time of ball retainer b-3 and backing plate b-4 cooperation, the annular rolling ball channel on annular rolling ball channel and backing plate on retainer just coordinates two the symmetrical complete circulating lines in formation left and right.On backing plate, be designed with equally tapped hole, be used for and bolt b-6 cooperation.
Described ball b-5 is the moving person of this structure, and in uniform two circulating lines that are distributed in ball retainer b-3 and backing plate b-4 of ball, in the process of moving in synchronizing ring 6, playing rolls reduces the effect of friction.
Described bolt b-6 is hexagon head bolt, is used for connecting synchronizing ring 6, ball retainer b-3 and backing plate b-4.Its size and size are determined by the size of ball retainer and backing plate.
Described nut b-7 is hexagon thin nut, and nut is arranged in the counterbore of ball retainer lower surface, and matches with bolt b-6.
3. the synchronizing ring of row formula ball type structure:
The erection drawing of row formula ball type synchronizing ring as shown in Figure 9: row formula ball type synchronizing ring is made up of synchronizing ring 6, row formula ball type synchronizing ring guide groove c-1, row formula ball road c-2, one side ball rack c-3, two-sided ball rack c-4, ball c-5, bolt c-6, nut c-7.
The annexation of the each part of this structure is: by bolt c-6 and nut c-7, one side ball rack c-3 and two-sided ball rack c-4 are fixed in row formula ball type synchronizing ring guide groove c-1; Ball c-5 is arranged on adjacent two ball racks and matches in the ring raceway forming; Ball moves on row formula ball road c-2.
Two the two-sided ball rack c-4 that distribute in each row formula ball type synchronizing ring guide groove c-1, two one side ball rack c-3, are connected ball rack and synchronizing ring 6 by two bolt c-6 and two nut c-7.In the ring raceway that adjacent two ball racks form, lay ball c-5, have a line ball and expose a part, the row formula ball road c-2 on part ball and the casing exposing matches.
The way of realization of overall structure function is: pressurized strut 10 promotes synchronizing ring 6 axial motions, and the rolling by ball c-5 on row formula ball road c-2, realizes the axial motion of synchronizing ring with respect to casing.
Described synchronizing ring 6 is annulus part, and its cross section is " work " font, is circumferentially uniformly distributed some row formula ball type synchronizing ring guide groove c-1 in synchronizing ring.Meanwhile, in synchronizing ring, be designed with tapped hole, be used for and bolt c-6 cooperation.
Described row formula ball road c-2, determines the size of raceway according to the distance of the size of ball c-5 and adjacent two row balls, thereby realizes the cooperation of ball and raceway.
Be one side ball rack c-3 as shown in figure 10: in Figure 10, a figure is the planimetric map of one side ball rack, b is the graphics of one side ball rack.The main body of one side ball rack c-3 is cuboid, and its base dimension is determined by the guide groove in synchronizing ring.Wherein be designed with a row annular rolling ball channel.The hole of the middle part open loop shape of one side ball rack, four jiaos are done chamfering, are all for weight reduction.On ball rack, be designed with tapped hole, be used for and bolt c-6 cooperation; Tapped hole is around designed with boss, boss material around by mill off in order to weight reduction.
Two-sided ball rack c-4 as shown in figure 11: in Figure 11, a figure is the plan view of two-sided ball rack, and b figure is plan view, and c figure is graphics.The main body of two-sided ball rack c-4 is cuboid, its base dimension is identical with one side ball rack c-3, the two sides, left and right of two-sided ball rack is all designed with the annular rolling ball channel of row formula, in the time that the ball rack of two-sided ball rack and the right and left matches, the annular rolling ball channel on two ball racks just coordinates a complete circulating line of formation.On two-sided ball rack, be designed with equally tapped hole, be used for and bolt c-6 cooperation; The hole of its same open loop shape in middle part, four jiaos are done chamfering, and tapped hole designs boss around, and boss material is around removed, and is used for weight reduction.
Described ball c-5 is the moving person of this structure, and ball c-5 is uniform to be distributed in the ring raceway that two retainers form, and in the process of moving in synchronizing ring 6, playing rolls reduces the effect of friction.
Described bolt c-6 is hexagon head bolt, is used for connecting synchronizing ring 6, one side ball rack c-3, two-sided ball rack c-4.Its size and size are determined by the size of row formula ball type synchronizing ring guide groove c-1.
Described nut c-7 is hexagon thin nut, and c-6 coordinates with bolt.
4. the synchronizing ring of the direct damascene structures of linear bearing:
The erection drawing of the direct Embedded Synchronous ring of linear bearing as shown in Figure 12,13: the direct Embedded Synchronous ring of linear bearing is made up of synchronizing ring 6, bearing guide groove d-1, finished product linear bearing d-2, bearing cap d-3, bearing guide d-4, screw d-5.
The annexation of the each part of this structure is: finished product linear bearing d-2 is arranged in bearing guide groove d-1 and by bearing cap d-3 and screw d-5 location; Bearing guide d-4 is arranged on outer casing leading portion 1.The outer ring of finished product linear bearing d-2 and bearing guide groove d-1 interference fit, linear bearing ball moves on bearing guide.
Two the finished product linear bearing d-2 that distribute vertically in the bearing guide groove d-1 of everywhere on the direct Embedded Synchronous ring of linear bearing, a bearing cap d-3, four screw d-5, a bearing guide d-4.
The way of realization of overall structure function is: pressurized strut 10 promotes synchronizing ring 6 axial motions, the bearing guide groove d-1 interference fit in outer ring and the synchronizing ring 6 of finished product linear bearing d-2, together motion; Rely on the motion of linear bearing ball on bearing guide d-4 to realize the axial motion of synchronizing ring along casing.
Described linear bearing d-2 is finished product structure.Finished product linear bearing is incorporated in synchronous ring structure, is designed with bearing guide groove d-1 in synchronizing ring, finished product linear bearing d-2 is arranged on to bearing guide groove d-1 upper, bearing guide d-4 is arranged on casing.Bearing cap d-3 and screw d-5 are used for the axial motion of straight limit bearing.
Non-elaborated part of the present invention belongs to techniques well known.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here cannot give exhaustive to all mode of executions.Everyly belong to apparent variation or the still row in protection scope of the present invention of variation that technological scheme of the present invention extends out.
Claims (5)
1. a synchronizing ring mechanism for variable cycle engine pattern changing valve, is characterized in that: comprise synchronizing ring (6), synchronizing ring guide rail (9) and several synchronizing ring guide grooves (11); Synchronizing ring (6) is for overlapping the annulus that the cross section of casing leading portion (1) outside is " work " font outside, synchronizing ring (6) internal circumferential is arranged several synchronizing ring guide grooves (11), several synchronizing ring guide grooves (11) are enclosed within synchronizing ring guide rail (9) while installation upper, thereby guarantee synchronizing ring (6) is slided along synchronizing ring guide rail (9) front and back that are installed on outer casing leading portion (1).
2. the synchronizing ring mechanism of variable cycle engine pattern changing valve according to claim 1, it is characterized in that: described synchronizing ring (6) is roller type structure, comprising: roller type synchronizing ring guide groove (a-1), outer casing roller raceway (a-2), axle (a-3), bearing (a-4), bearing protecting jacket (a-5), back-up ring (a-6), screw (a-7); It is upper that 2 axles (a-3) are arranged on roller type synchronizing ring guide groove (a-1), upper 2 bearings (a-4) and 2 back-up rings (a-6) installed of every axle (a-3); The upper bearing protecting jacket (a-5) of installing of bearing (a-4) is used for protecting outer race.Carry out fastener shaft (a-3) by 2 screws (a-7), the upper motion of casing roller raceway (a-2) outside of the outer ring of bearing (a-4).
3. the synchronizing ring mechanism of variable cycle engine pattern changing valve according to claim 1, it is characterized in that: described synchronizing ring (6) is line ball type structure, comprising: line ball type synchronizing ring guide groove (b-1), line ball road (b-2), ball retainer (b-3), backing plate (b-4), ball (b-5), bolt (b-6), nut (b-7); Ball (b-5) is arranged on ball retainer (b-3) and backing plate (b-4) matches in the ring raceway forming; In a line ball type synchronizing ring guide groove (b-1), ball retainer (b-3), backing plate (b-4) and synchronizing ring (6) are coupled together with 4 bolts (b-6) and 4 nuts (b-7), ball (b-5) is in the upper motion of line ball road (b-2).
4. the synchronizing ring mechanism of variable cycle engine pattern changing valve according to claim 1, it is characterized in that: described synchronizing ring (6) is row formula ball type structure, comprising: row formula ball type synchronizing ring guide groove (c-1), row formula ball road (c-2), one side ball rack (c-3), two-sided ball rack (c-4), ball (c-5), bolt (c-6), nut (c-7); Ball (c-5) is arranged on adjacent two ball racks and matches in the ring raceway forming; In a row formula ball type synchronizing ring guide groove (c-1), circumferentially distribute 2 one side ball racks (c-3), 2 two-sided ball racks (c-4), couple together one side ball rack (c-3), two-sided ball rack (c-4) and synchronizing ring (6) with 2 bolts (c-6) and 2 nuts (c-7); Ball (c-5) is in the upper motion of row formula ball road (c-2).
5. the synchronizing ring mechanism of variable cycle engine pattern changing valve according to claim 1, it is characterized in that: described synchronizing ring (6) is the direct damascene structures of linear bearing, comprising: bearing guide groove (d-1), finished product linear bearing (d-2), bearing cap (d-3), bearing guide (d-4) and screw (d-5); 2 the finished product linear bearings (d-2) that distribute vertically in everywhere bearing guide groove (d-1), linear bearing outer ring and bearing guide groove interference fit, 4 screws (d-5) are used for fastening bearing cap (d-3); Bearing guide (d-4) is arranged on outer casing leading portion (1).
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| CN201410168812.7A CN103912386B (en) | 2014-04-24 | 2014-04-24 | A kind of synchronous ring mechanism of variable cycle engine mode switching valve |
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| CN201410168812.7A CN103912386B (en) | 2014-04-24 | 2014-04-24 | A kind of synchronous ring mechanism of variable cycle engine mode switching valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484898A (en) * | 2015-12-25 | 2016-04-13 | 中国航空工业集团公司沈阳发动机设计研究所 | Mode switching device of variable cycle engine |
| CN111207005A (en) * | 2020-02-14 | 2020-05-29 | 中国航发沈阳发动机研究所 | Variable cycle engine mode control mechanism and intermediate casing structure with same |
| CN111219265A (en) * | 2020-02-14 | 2020-06-02 | 中国航发沈阳发动机研究所 | Variable cycle engine mode control mechanism and intermediate casing structure with same |
| CN114165816A (en) * | 2022-02-09 | 2022-03-11 | 中国航发四川燃气涡轮研究院 | Engine hydraulic actuator cylinder mounting device |
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| CN105484898A (en) * | 2015-12-25 | 2016-04-13 | 中国航空工业集团公司沈阳发动机设计研究所 | Mode switching device of variable cycle engine |
| CN111207005A (en) * | 2020-02-14 | 2020-05-29 | 中国航发沈阳发动机研究所 | Variable cycle engine mode control mechanism and intermediate casing structure with same |
| CN111219265A (en) * | 2020-02-14 | 2020-06-02 | 中国航发沈阳发动机研究所 | Variable cycle engine mode control mechanism and intermediate casing structure with same |
| CN114165816A (en) * | 2022-02-09 | 2022-03-11 | 中国航发四川燃气涡轮研究院 | Engine hydraulic actuator cylinder mounting device |
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| CN103912386B (en) | 2016-06-29 |
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Effective date of registration: 20170802 Address after: 100191 Haidian District, Xueyuan Road, No. 37, Co-patentee after: Shenyang Hangfa China Engine Research Institute Patentee after: Beihang University Address before: 100191 Haidian District, Xueyuan Road, No. 37, Patentee before: Beihang University |