CN110131194B - Self-adaptive assembled multistage adjustable blade control mechanism - Google Patents
Self-adaptive assembled multistage adjustable blade control mechanism Download PDFInfo
- Publication number
- CN110131194B CN110131194B CN201810134364.7A CN201810134364A CN110131194B CN 110131194 B CN110131194 B CN 110131194B CN 201810134364 A CN201810134364 A CN 201810134364A CN 110131194 B CN110131194 B CN 110131194B
- Authority
- CN
- China
- Prior art keywords
- driven
- torsion bar
- cross beam
- adjustable blade
- adaptive
- Prior art date
- 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.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
- F02C9/16—Control of working fluid flow
- F02C9/20—Control of working fluid flow by throttling; by adjusting vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/56—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/563—Fluid-guiding means, e.g. diffusers adjustable specially adapted for elastic fluid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fluid Mechanics (AREA)
- Geometry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a self-adaptive assembled multistage adjustable blade control mechanism which is arranged on a casing and comprises a front mounting seat, a rear mounting seat, a torsion bar beam, a driving end and a multistage driven mechanism, wherein the front mounting seat and the rear mounting seat are respectively arranged at two ends of the casing; one end of the active end is connected with the hydraulic actuator cylinder, the other end of the active end is arranged on the cross beam of the torsion bar, the active end is driven by the hydraulic actuator cylinder so as to drive the cross beam of the torsion bar to rotate, and the active end can relatively slide along the axial direction of the cross beam of the torsion bar; one end of the driven mechanism is arranged on the casing, the other end of the driven mechanism is arranged on the torsion bar cross beam, and the driven mechanism is driven by the torsion bar cross beam. The included angle between the driving end and the driven end of each stage of the torsion bar is adjustable, so that the adjustable blade adjusting mechanism is greatly suitable for the change of the adjusting angle and range of each stage of adjustable blades. The positions of all stages of driven ends are adjusted in a self-adaptive mode, the force transmission efficiency of the control mechanism is improved, and interference among parts is avoided.
Description
Technical Field
The invention relates to the field of aircraft engines, in particular to a self-adaptive assembled multistage adjustable blade control mechanism.
Background
In the field of aeroengines, the adjustable blade can be used for improving the stable working range of the gas compressor and is widely applied to the aeroengine. In general, a compressor has multiple stages of adjustable blades, the angle adjusted by each stage is different, and in order to enable each stage to work coordinately, a set of control mechanism needs to be designed.
The existing designs mainly include two types, one is a torsion bar type adjustable blade handling mechanism, such as the GE90 series. FIG. 1 is a schematic view of a prior art torsion bar type adjustable blade control mechanism. As shown in fig. 1, the hydraulic actuator cylinder 100 drives the torsion bar 110 to rotate, and the driving end and the driven end of the torsion bar 110 rotate simultaneously and have the same rotation angle, so as to drive the linkage assemblies 120 of each stage, and rotate simultaneously to realize linkage of the linkage assemblies 130 of each stage.
The second is a crank link type adjustable blade control mechanism, such as CFM56 series. FIG. 2 is a schematic diagram of a prior art crank link type adjustable vane operating mechanism. As shown in fig. 2, the hydraulic cylinder 200 drives the first-stage crank 210 to drive the main link 220, the main link 220 drives the cranks 230 to rotate, the driving ends and the driven ends of the cranks (210, 230) rotate at the same time and have the same rotation angle, and the pull rods 240 rotate at the same time to realize the linkage of the link assemblies 250.
During the movement, the connecting rod assembly 120 or the pull rod 240 swings along the axis of the engine, so that the force transmission loss is caused, and the connecting rod assembly is easily interfered with connected or adjacent parts.
In addition, when any primary regulation rule is changed greatly, the torsion bar of the torsion bar type control mechanism needs to be replaced.
Therefore, in the traditional torsion bar type adjustable blade control mechanism, the swinging of the connecting rod assembly or the pull rod causes the reduction of the force transmission efficiency in the movement process, and the traditional torsion bar type adjustable blade control mechanism is easy to interfere with an adjacent component. In addition, when the regulation rule changes, the operating mechanism needs to replace more parts to meet the new regulation rule, and the assembly and debugging are troublesome.
Disclosure of Invention
The invention aims to overcome the defects that an adjustable blade control mechanism in the prior art is easy to cause force transmission loss and cause interference between a connecting rod assembly and a connected or adjacent part, and provides a self-adaptive assembly type multistage adjustable blade control mechanism.
The invention solves the technical problems through the following technical scheme:
a self-adaptive assembly type multistage adjustable blade control mechanism is arranged on a casing and is characterized by comprising a front mounting seat, a rear mounting seat, a torsion bar cross beam, a driving end and a multistage driven mechanism, wherein the front mounting seat and the rear mounting seat are respectively arranged at two ends of the casing, and the torsion bar cross beam is arranged between the front mounting seat and the rear mounting seat;
one end of the active end is connected with a hydraulic actuator cylinder, the other end of the active end is installed on the torsion bar cross beam, the active end is driven by the hydraulic actuator cylinder so as to drive the torsion bar cross beam to rotate, and the active end can relatively slide along the axial direction of the torsion bar cross beam;
one end of the driven mechanism is installed on the casing, the other end of the driven mechanism is installed on the torsion bar cross beam, and the driven mechanism is driven by the torsion bar cross beam.
According to one embodiment of the invention, each driven mechanism comprises a driven end, a connecting rod assembly and a linkage ring assembly, wherein one end of the driven end is installed on the torsion rod cross beam, the other end of the driven end is connected with one end of the connecting rod assembly, the other end of the connecting rod assembly is connected with one end of the linkage ring assembly, and the other end of the linkage ring assembly is installed on the casing;
the driven end can relatively slide along the axial direction of the torsion bar cross beam, and the driven end is connected with the connecting rod assembly to drive the linkage ring assembly to rotate.
According to one embodiment of the present invention, one end of the torsion beam is pressed against the front mount/the rear mount by a compression nut, so that the torsion beam rotates about the central axis of the front mount and the rear mount.
According to an embodiment of the present invention, the torsion beam is a multi-angle shaft, and the other end of the active end is a first joint having an inner multi-angle, and the other end of the active end matches the shape of the torsion beam.
According to an embodiment of the invention, one end of the driving end is a third joint provided with a U-shaped groove, and the third joint is rotatably connected with the hydraulic cylinder.
According to an embodiment of the present invention, a surface of the torsion beam cross member is coated with a lubricating layer, and both a surface of the inner polygon of the driving end and a surface of the inner polygon of the driven end are coated with a lubricating layer.
According to one embodiment of the present invention, the outer surface of the torsion beam cross member, the inner surface of the driving end, and the inner surface of the driven end are provided with a wear-resistant coating.
According to one embodiment of the present invention, one end of the driven end is a second joint having an inner polygonal shape, and one end of the driven end matches the shape of the torsion beam cross-member.
According to one embodiment of the invention, the other end of the driven end is a fourth joint provided with a U-shaped groove, and the fourth joint is connected with one end of the connecting rod assembly.
The positive progress effects of the invention are as follows:
the self-adaptive assembled multistage adjustable blade control mechanism has the advantages that the driven end can slide along the torsion bar cross beam, so that the connecting rod assembly and the linkage ring assembly can be fixed with the driven end of the torsion bar in the axial direction of the engine at the same time, the force transmission efficiency is improved, and the interference is avoided. The driving end and the driven ends of all levels are designed independently, so that the situation that the whole torsion bar or even more parts need to be replaced when the regulation rule of one level changes is avoided. Meanwhile, the included angle between the driving end and the driven ends of all stages of the torsion bar can be adjusted, and the change of the adjustment angle and the range of all stages of adjustable blades is greatly adapted. The positions of all stages of driven ends are adjusted in a self-adaptive mode, the force transmission efficiency of the control mechanism is improved, and interference among parts is avoided. The driving end and the driven end of each stage can be independently replaced, and the adjustable blade adjusting mechanism is suitable for the change of the adjusting angle and the range of each stage of adjustable blade.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings in which like reference numerals denote like features throughout the several views, wherein:
FIG. 1 is a schematic view of a prior art torsion bar type adjustable blade control mechanism.
FIG. 2 is a schematic diagram of a prior art crank link type adjustable vane operating mechanism.
Fig. 3 is a schematic structural diagram of the adaptive assembled multistage adjustable blade control mechanism of the present invention.
Fig. 4 is a schematic view of a connection structure of a driving end, a driven end and a torsion bar beam in the self-adaptive assembly type multistage adjustable blade control mechanism of the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
Further, although the terms used in the present invention are selected from publicly known and used terms, some of the terms mentioned in the description of the present invention may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein.
Furthermore, it is required that the present invention is understood, not simply by the actual terms used but by the meaning of each term lying within.
Fig. 3 is a schematic structural diagram of the adaptive assembled multistage adjustable blade control mechanism of the present invention. Fig. 4 is a schematic view of a connection structure of a driving end, a driven end and a torsion bar beam in the self-adaptive assembly type multistage adjustable blade control mechanism of the invention.
As shown in fig. 3 and 4, the present invention discloses an adaptive assembly type multistage adjustable blade control mechanism, which is mounted on a casing 10. The adaptive assembly type multistage adjustable blade control mechanism comprises a front mounting seat 20, a rear mounting seat 30, a torsion bar beam 40, a driving end 50 and a multistage driven mechanism 60, wherein the front mounting seat 20 and the rear mounting seat 30 are respectively mounted at two ends of a casing 10, and the torsion bar beam 40 is mounted between the front mounting seat 20 and the rear mounting seat 30. One end of the active end 50 is connected to the hydraulic ram 70, and the other end is mounted on the torsion beam cross-member 40, and the active end 50 is driven by the hydraulic ram 70, so as to drive the torsion beam cross-member 40 to rotate, so that the active end 50 can slide relatively along the torsion beam cross-member 40 in the axial direction. The driven mechanism 60 has one end mounted on the casing 10 and the other end mounted on the torsion beam 40, and the driven mechanism 60 is driven by the torsion beam 40.
Preferably, each of the driven mechanisms 60 includes a driven end 61, a link assembly 62, and a link ring assembly 63, one end of the driven end 61 is mounted on the torsion beam cross member 40, the other end is connected to one end of the link assembly 62, the other end of the link assembly 62 is connected to one end of the link ring assembly 63, and the other end of the link ring assembly 63 is mounted on the casing 10. The driven end 61 can slide relatively along the axial direction of the torsion bar beam 40, and the linkage assembly 63 is driven to rotate by connecting the driven end 61 with the linkage assembly 62. The present invention can employ a multi-stage driven mechanism 60, and the present embodiment employs a four-stage driven mechanism 60, which is only an example and is not limited by the present embodiment.
One end of torque rod cross member 40 is pressed against front mount 20/rear mount 30 by a pressing nut 41, so that torque rod cross member 40 rotates about the central axis of front mount 20 and rear mount 30.
Further preferably, the torsion beam 40 is a multi-angle shaft, the other end of the active end 50 is a first joint 51 having an inner multi-angle, and the other end of the active end 50 matches the shape of the torsion beam 40. One end of the driving end 50 is a third joint 52 having a U-shaped groove, which rotatably connects the third joint 52 to the hydraulic cylinder 70.
Similarly, the driven end 61 has a second joint 64 with an inner polygonal end, and the driven end 61 has an end that matches the shape of the torsion beam cross member 40. The other end of the driven end 61 is a fourth joint 65 provided with a U-shaped slot, connecting the fourth joint 65 with one end of the link assembly 62.
Specifically, the surface of the torsion beam cross member 40 is coated with a lubricating layer, and accordingly, the inner polygonal surface of the drive end 50 and the inner polygonal surface of the driven end 61 are coated with a lubricating layer. Further, the surfaces of the torsion beam cross member 40, the inner surface of the driving end 50, and the inner surface of the driven end 61 are provided with a wear-resistant coating.
According to the above structural description, the adaptive assembly type multistage adjustable blade control mechanism of the present invention rotates the driven ends 61 of the respective stages through the rotation of the torsion beam 40, wherein the driven ends 61 of the respective stages have a structure similar to the driving end 50 and are matched with the torsion beam 40, and the driven ends 61 of the respective stages can slide relatively in the axial direction of the torsion beam 40. The driven end 61 of each stage is connected with the connecting rod assembly 62 of each stage to drive the linkage ring assembly 63 of each stage to rotate. The change of the adjustment angle and range of each stage of adjustable blades can be quickly adapted by changing the matching (relative included angle) of the driving end 50, each stage of driven end 61 and the torsion bar beam 40 or replacing different driving ends 40 and different driven ends 61.
The driving end and the driven ends of all stages in the self-adaptive assembly type multistage adjustable blade control mechanism can slide along the torsion bar cross beam, so that the force transmission loss caused by the left-right swinging of the connecting rod and the thermal deformation of the casing is avoided, and the installation difficulty caused by the axial deviation caused by the machining tolerance is also avoided. The multistage adjustable blade control mechanism is characterized in that the driven end is designed to be an assembled separated structure, the pneumatic adjustment rule is changed conveniently by only replacing the driven end, and other stages can not be influenced under the condition of replacing any one stage, so that the cost is saved.
Meanwhile, the self-adaptive assembly type multistage adjustable blade control mechanism successfully solves the problem of low transmission efficiency caused by the swinging of the connecting rod, the torsion bar cross beam is connected with the driving end and each driven end through the polygonal head plane, the driving end and the driven end can slide along the torsion bar cross beam in the axial direction, the angular combination of the polygonal head shaft and the driving end can realize the optimal driving force transmission angle, the transmission efficiency is optimized, in addition, the polygonal head transmits the torque of the driving end to the driven end, the stress surface is large, and the contact is stable.
In addition, the self-adaptive assembly type multistage adjustable blade control mechanism is provided with a lubricating and wear-resistant coating on the torsion bar cross beam, and the connecting rods cannot swing left and right through the revolute pair connection with the degree of freedom of 1, so that the driving end and the driven ends of all stages can slide along the torsion bar cross beam, interference risks caused by the left and right swinging of the connecting rods are avoided, force transmission loss caused by thermal deformation of a casing is avoided, and mounting difficulty caused by axial deviation caused by machining tolerance is also avoided.
The driven end of the self-adaptive assembly type multistage adjustable blade control mechanism can slide along the torsion bar cross beam, so that the connecting rod assembly and the linkage ring assembly can be fixed with the driven end of the torsion bar in the axial direction of the engine at the same time, the force transmission efficiency is improved, and interference is avoided. The driving end and the driven ends of all levels are designed independently, so that the situation that the whole torsion bar or even more parts need to be replaced when the regulation rule of one level changes is avoided. Meanwhile, the included angle between the driving end and the driven ends of all stages of the torsion bar can be adjusted, and the change of the adjustment angle and the range of all stages of adjustable blades is greatly adapted. The positions of all stages of driven ends are adjusted in a self-adaptive mode, the force transmission efficiency of the control mechanism is improved, and interference among parts is avoided. The driving end and the driven end of each stage can be independently replaced, and the adjustable blade adjusting mechanism is suitable for the change of the adjusting angle and the range of each stage of adjustable blade.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (7)
1. A self-adaptive assembly type multistage adjustable blade control mechanism is arranged on a casing and is characterized by comprising a front mounting seat, a rear mounting seat, a torsion bar cross beam, a driving end and a multistage driven mechanism, wherein the front mounting seat and the rear mounting seat are respectively arranged at two ends of the casing, and the torsion bar cross beam is arranged between the front mounting seat and the rear mounting seat;
one end of the active end is connected with a hydraulic actuator cylinder, the other end of the active end is installed on the torsion bar cross beam, the active end is driven by the hydraulic actuator cylinder so as to drive the torsion bar cross beam to rotate, and the active end can relatively slide along the axial direction of the torsion bar cross beam;
one end of the driven mechanism is installed on the casing, the other end of the driven mechanism is installed on the torsion bar cross beam, and the driven mechanism is driven by the torsion bar cross beam;
each driven mechanism comprises a driven end, a connecting rod assembly and a linkage ring assembly, one end of the driven end is installed on the torsion rod cross beam, the other end of the driven end is connected with one end of the connecting rod assembly, the other end of the connecting rod assembly is connected with one end of the linkage ring assembly, and the other end of the linkage ring assembly is installed on the casing;
the driven end can relatively slide along the axial direction of the torsion bar cross beam, and is connected with the connecting rod assembly through the driven end to drive the linkage ring assembly to rotate;
the torsion bar cross beam is a shaft with a multi-angle head, the other end of the active end is a first joint with an inner multi-angle, and the other end of the active end is matched with the shape of the torsion bar cross beam.
2. The adaptive fabricated multistage adjustable blade steering mechanism according to claim 1, wherein one end of the torsion beam is pressed against the front mount/the rear mount by a compression nut, so that the torsion beam rotates about a central axis of the front mount and the rear mount.
3. The adaptive fabricated multi-stage adjustable blade control mechanism according to claim 1, wherein one end of the driving end is a third joint having a U-shaped slot, the third joint being rotatably connected to the hydraulic ram.
4. The adaptive fabricated multi-stage adjustable blade steering mechanism according to claim 1, wherein the surface of the torsion bar beam is coated with a lubricating layer, and the surface of the inner polygon of the driving end and the surface of the inner polygon of the driven end are both coated with a lubricating layer.
5. The adaptive fabricated multi-stage adjustable blade control mechanism of claim 4, wherein the outer surface of the torsion bar beam, the inner surface of the driving end, and the inner surface of the driven end are provided with wear resistant coatings.
6. The adaptive fabricated multi-stage adjustable blade steering mechanism according to claim 1, wherein one end of said driven end is a second joint having an inner polygon, and one end of said driven end is matched to the shape of said torsion bar beam.
7. The adaptive fabricated multi-stage adjustable blade steering mechanism according to claim 6, wherein the other end of the driven end is a fourth connector having a U-shaped slot, the fourth connector being connected to one end of the linkage assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134364.7A CN110131194B (en) | 2018-02-09 | 2018-02-09 | Self-adaptive assembled multistage adjustable blade control mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134364.7A CN110131194B (en) | 2018-02-09 | 2018-02-09 | Self-adaptive assembled multistage adjustable blade control mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110131194A CN110131194A (en) | 2019-08-16 |
| CN110131194B true CN110131194B (en) | 2020-09-25 |
Family
ID=67567789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810134364.7A Active CN110131194B (en) | 2018-02-09 | 2018-02-09 | Self-adaptive assembled multistage adjustable blade control mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110131194B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8435000B2 (en) * | 2008-03-07 | 2013-05-07 | Rolls-Royce Corporation | Variable vane actuation system |
| EP2354560A1 (en) * | 2010-01-28 | 2011-08-10 | Siemens Aktiengesellschaft | Device for adjusting variable guide vanes |
| CN202811538U (en) * | 2012-07-20 | 2013-03-20 | 湖北省风机厂有限公司 | Axial flow fan front guide blade adjuster |
| CN203717458U (en) * | 2014-02-21 | 2014-07-16 | 郭会彬 | Guide vane adjusting mechanism of air blower |
| US9759232B2 (en) * | 2014-02-27 | 2017-09-12 | Woodward, Inc. | Rotary actuator with integrated actuation |
| CN104948241B (en) * | 2014-03-27 | 2017-07-14 | 中航商用航空发动机有限责任公司 | Compressor and the stator governor motion for the compressor |
| CN204299962U (en) * | 2014-11-21 | 2015-04-29 | 湖北省风机厂有限公司 | A kind of high-speed centrifugal blower diffuser vane controlling mechanism |
-
2018
- 2018-02-09 CN CN201810134364.7A patent/CN110131194B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110131194A (en) | 2019-08-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4882912B2 (en) | Variable compression ratio internal combustion engine | |
| CN1789673B (en) | Control lever for setting angle of stator blade in turboshaft engine | |
| EP0235073B1 (en) | Unison ring actuator assembly | |
| JP5126505B2 (en) | Variable pitch blade control | |
| US10766603B2 (en) | Pitch-change system equipped with means for adjusting blade pitch and corresponding turbine engine | |
| CN1212320A (en) | Blade-fixing device of compressor for high speed worm-gear machine | |
| CN102713309B (en) | Device for adjusting variable guide vanes | |
| CN214146025U (en) | Fixed blade adjusting mechanism of gas compressor | |
| CN110131194B (en) | Self-adaptive assembled multistage adjustable blade control mechanism | |
| US10184395B2 (en) | Multi-joint crank drive of an internal combustion engine, and corresponding internal combustion engine | |
| US11673227B2 (en) | Deep roll peening system and method | |
| EP0596039B1 (en) | Compensation for kinematic foreshortening effect in pitch control system for rotary wing aircraft | |
| JP5625986B2 (en) | Multi-link piston-crank mechanism for internal combustion engine, control shaft for multi-link piston-crank mechanism, or method for manufacturing control shaft for multi-link piston-crank mechanism | |
| US10036282B2 (en) | Vane support systems | |
| CN210106250U (en) | Adjusting system for multistage adjustable stationary blade of gas compressor and adjusting device thereof | |
| US11047255B2 (en) | Control device of an annular row of variable-pitch vanes for an aircraft engine | |
| CN114270050B (en) | Rocker arm for a variable adjustment device of a turbomachine | |
| US7140838B2 (en) | Control lever attachment with play compensation for blades with variable setting angles | |
| JP2007247534A (en) | Variable compression ratio mechanism of internal combustion engine | |
| US10520012B1 (en) | Rod end having wear mitigation features for an augmenter nozzle on a jet engine turbine | |
| JP2011252505A (en) | Variable compression ratio internal combustion engine | |
| JP5088437B2 (en) | Variable compression ratio internal combustion engine | |
| JP2012031809A (en) | Internal combustion engine and method for adjusting top dead center position of piston thereof | |
| US20240218800A1 (en) | System for changing the pitch of the blades of a turbomachine propeller | |
| CN210423123U (en) | Linkage cam mechanism for adjustable blade and compressor comprising same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |