Crank assembly, adjusting mechanism for adjustable stator and aero-engine gas compressor

Abstract

The utility model relates to a crank assembly, an adjusting mechanism for an adjustable stator and an aero-engine gas compressor, belongs to the technical field of aerospace, and solves the problems that in the prior art, due to the fact that accumulative errors are large, clamping stagnation occurs in the rotation process of a crank, and the supporting degree of the crank is poor. The device comprises a crank bracket, a crank and a hinge pin, comprising a crank bracket, a crank and a hinge pin, the crank bracket comprises an upper plate and a lower plate; the upper plate is provided with first through holes, and the lower plate is provided with second through holes. The crank comprises a first connecting part, and the first connecting part is arranged between the upper plate and the lower plate; a third through hole penetrating in the axis direction is formed in the center of the crank; and the hinge pin is arranged in the first through hole, the second through hole and the third through hole. According to the utility model, accumulative errors can be reduced, the crank is additionally supported, and the control precision of the blade is improved.

Description

Technical Field

[0001] This utility model relates to the field of aerospace technology, and in particular to a crank assembly, an adjustable stator adjustment mechanism, and an aero-engine compressor. Background Technology

[0002] In aero-engines, the compressor of a gas turbine engine typically uses a crankshaft and connecting rod adjusting mechanism to regulate the rotation angle of the blades, thereby controlling airflow and pressure. Existing crankshaft supports suffer from accumulated dimensional and geometric errors during assembly, resulting in significant coaxiality errors between the support holes and the blade mounting holes on the casing after installation. This can cause jamming during crank rotation, reducing the crankshaft's installation accuracy. Frequent engine disassembly and assembly also increase the clearance between the crankshaft and the crankshaft support's through-holes, affecting the adjustment accuracy and stability of the adjusting mechanism. Utility Model Content

[0003] Based on the above analysis, the present invention aims to provide a crank assembly, an adjustable stator adjustment mechanism, and an aero-engine compressor to solve the problem in the prior art where large cumulative errors cause jamming during crank rotation, reducing the installation accuracy of the crank assembly.

[0004] The objective of this utility model is mainly achieved through the following technical solutions:

[0005] One aspect of this utility model is to provide a crank assembly, including a crank bracket, a crank, and a hinge pin;

[0006] The crank bracket includes an upper plate and a lower plate; the upper plate is provided with a first through hole, and the lower plate is provided with a second through hole; the first through hole and the second through hole are coaxially arranged.

[0007] The crank includes a first connecting portion disposed between the upper plate and the lower plate; the center of the first connecting portion has a third through hole extending along the axial direction;

[0008] The hinge pin is disposed in the first through hole, the second through hole and the third through hole.

[0009] Furthermore, the crank bracket also includes a positioning part; the positioning part is disposed on the lower part of the lower plate, and the positioning part is used for positioning when the crank assembly is assembled into the housing of the adjustment mechanism.

[0010] Furthermore, the positioning part has a through hole at its center, and the through hole is connected to the second through hole.

[0011] Furthermore, it also includes a first bushing and a second bushing; the first bushing and the second bushing are respectively disposed in the first through hole and the second through hole.

[0012] Furthermore, the first bushing and the second bushing are provided with bushing holes at their centers, and the two ends of the hinge pin extend into the bushing holes of the first bushing and the second bushing, respectively; the hinge pin rotates in the bushing holes.

[0013] A second aspect of this utility model provides an adjustable stator adjustment mechanism, including a housing, a linkage ring, and the aforementioned crank assembly;

[0014] The outer surface of the casing has at least one mounting surface;

[0015] The linkage ring is coaxially arranged with the casing, and the linkage ring is located on the outside of the casing;

[0016] The crank assembly is disposed on the mounting surface; the crank assembly is connected to the linkage ring.

[0017] Furthermore, the lower end face of the lower plate is in contact with the mounting surface;

[0018] The casing has multiple blade mounting holes evenly distributed around its circumference, and the positioning part of the crank bracket is disposed in the blade mounting holes; the second through hole corresponds to the blade mounting holes.

[0019] Furthermore, the crank also includes a second connecting portion, and the linkage ring has a rocker arm mounting hole, into which the second connecting portion extends.

[0020] A third aspect of this utility model is to provide an aero-engine compressor, including blades and an adjustment mechanism for the adjustable stator.

[0021] Multiple blades are correspondingly disposed in the blade mounting holes; the linkage ring is connected to multiple blades; at least one blade is connected to the crank assembly.

[0022] Furthermore, the lower part of the hinge pin is provided with a blade adjustment hole along its axial direction; the at least one blade mounting end connected to the crank assembly is located in the blade adjustment hole.

[0023] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0024] (1) In this utility model, a first through hole and a second through hole are respectively provided on the upper plate and the lower plate of the crank bracket to jointly support the crank; the first through hole and the second through hole are coaxially arranged to ensure the coaxiality of the crank assembly when it is installed to the adjustment mechanism, reduce the cumulative error, ensure the installation accuracy, and prevent jamming during crank rotation; compared with the prior art, the crank of this utility model is provided with a hinge pin, which is set in the first through hole and the second through hole. The hinge pin and the crank form an integral whole, which increases the support for the crank and avoids the frequent disassembly and assembly of the engine from damaging the installation accuracy between the crank and the crank bracket.

[0025] (2) The present invention provides a positioning part at the lower part of the crank bracket for positioning when assembled to the adjustment mechanism, which improves the coaxiality of the crank bracket and the casing blade adjustment hole, and the positioning accuracy when assembling the crank assembly.

[0026] (3) The present invention provides bushings in the first through hole and the second through hole. On the one hand, the bushings guide and support the hinge pins. On the other hand, the hinge pins and the bushings form a rotational fit to prevent wear on the crank bracket. When replacing, only the bushings need to be replaced.

[0027] (4) Compared with the prior art, the present invention fixes the blade with the hinge pin, so that the crank, hinge pin and blade form a whole, which further improves the blade control accuracy.

[0028] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing this invention. The objectives and other advantages of this invention can be realized and obtained from the details specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0029] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0030] Figure 1 This is a schematic diagram of the crank assembly in Example 1;

[0031] Figure 2 This is a cross-sectional view of the crank assembly in Example 1;

[0032] Figure 3 This is a schematic diagram of the crank bracket in Example 1;

[0033] Figure 4 This is a schematic diagram of the crank mechanism in Example 1;

[0034] Figure 5 This is a schematic diagram of the hinge pin in Example 1;

[0035] Figure 6 This is a schematic diagram of the compressor adjustment structure in Example 2;

[0036] Figure 7 This is a schematic diagram of the crank assembly mounting structure on the casing in Embodiment 2;

[0037] Figure 8 This is a cross-sectional schematic diagram of the compressor adjustment structure in Example 2;

[0038] Figure 9 This is a schematic diagram of the casing of Example 2;

[0039] Figure 10 This is a schematic diagram of the blade structure in Example 3.

[0040] Figure label:

[0041] 1-Crank assembly, 11-Crank bracket, 111-Upper plate, 1111-First through hole, 112-Lower plate, 1121-Second through hole, 1122-Fixing hole, 1123-Reference surface, 113-Side plate, 114-Positioning part, 1141-Positioning outer circle, 12-Crank, 121-Crank body, 122-First connecting part, 1221-Third through hole, 1222-First limiting hole, 1223-First positioning hole, 123-Second connecting part, 1231-Fourth through hole, 124-Third connecting part 13-Hinge pin, 131-Blade adjustment hole, 132-Second limit hole, 133-Second positioning hole, 14-Limit pin, 15-Positioning pin, 16-Cotter pin, 17-First bushing, 18-Second bushing, 2-Casing, 21-Casing body, 22-Blade outer ring, 221-Bolt hole, 222-Blade mounting hole, 223-Mounting surface, 3-Linkage ring, 31-Rocker arm mounting hole, 4-Third bushing, 5-Blade, 51-Blade body, 52-Blade mounting end, 521-Third positioning hole, 6-Rocker arm. Detailed Implementation

[0042] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0043] Example 1

[0044] A specific embodiment of this utility model is as follows: Figure 1 and Figure 2 As shown, a crank assembly 1 is disclosed, including a crank 12, a crank bracket 11, and a hinge pin 13.

[0045] The crank bracket 11 includes an upper plate 111 and a lower plate 112. The upper plate 111 is provided with a first through hole 1111, and the lower plate 112 is provided with a second through hole 1121. The first through hole 1111 and the second through hole 1121 are coaxially arranged.

[0046] The crank 12 includes a first connecting portion 122, which is disposed between the upper plate 111 and the lower plate 112. The center of the first connecting portion 122 has a third through hole 1221 extending along the axial direction.

[0047] The hinge pin 13 is disposed in the first through hole 1111, the second through hole 1121 and the third through hole 1221.

[0048] Specifically, such as Figure 3 As shown, the crank bracket 11 includes an upper plate 111 and a lower plate 112.

[0049] For example, the crank bracket 11 has a C-shaped structure.

[0050] The upper plate 111 has a first through hole 1111 at its center, and the lower plate 112 has a second through hole 1121 at its center. The first through hole 1111 and the second through hole 1121 are coaxially arranged. To ensure the coaxiality between the first through hole 1111 and the second through hole 1121, the first through hole 1111 and the second through hole 1121 are formed by clamping in one piece. The second through hole 1121 of the lower plate 112 has two fixing holes 1122 on both sides for fixing the crank bracket 11 to the housing 2 of the adjustable stator adjustment mechanism.

[0051] like Figure 4 As shown, the lower end face of the lower plate 112 of the crank bracket 11 is the reference surface 1123 for mounting the crank assembly 1 to the casing 2, and is used to fit against the mounting surface 223 of the casing 2.

[0052] Furthermore, the crank bracket 11 also includes a positioning part 114, which is disposed on the lower part of the lower plate 112 and is used for positioning during assembly with the housing 2 of the adjustment mechanism. The positioning part 114 has a through hole at its center, which communicates with the second through hole 1121. Exemplarily, the positioning part 114 is cylindrical, and its outer circular surface is a positioning circle 1141. In this embodiment, the positioning part 114 improves the coaxiality of the crank bracket 11 and the mounting hole of the adjustment mechanism, thereby improving the positioning accuracy during crank assembly 1 assembly.

[0053] Furthermore, the crank bracket 1 also includes a side plate 113, which is used to connect the upper plate 111 and the lower plate 112.

[0054] The crank 12 includes a first connecting portion 122. The first connecting portion 122 of the crank 12 is disposed between the upper plate 111 and the lower plate 112 of the crank bracket 11.

[0055] The first connecting part 122 has a third through hole 1221 inside for inserting the hinge pin 13. Specifically, the first through hole 1111, the second through hole 1121 and the third through hole 1221 are coaxial.

[0056] Furthermore, the first connecting portion 122 of the crank 12 is provided with a first limiting hole 1222 and a first positioning hole 1223. The first limiting hole 1222 and the first positioning hole 1223 are arranged in parallel, and their axes are perpendicular to the axis of the third through hole 1221.

[0057] Furthermore, the crank 12 also includes a second connecting part 123. The second connecting part 123 is used to insert into the rocker arm mounting hole 31 of the linkage ring 3 of the adjusting mechanism, connect with the linkage ring 3, and drive the linkage ring 3 to rotate. The second connecting part 123 is provided with a fourth through hole 1231 for inserting a connecting pin.

[0058] Furthermore, the crank 12 also includes a crank body 121 and a third connecting part 124, which is used to connect the actuator or the connecting rod.

[0059] like Figure 5 As shown, the hinge pin 13 is disposed in the first through hole 1111, the second through hole 1121, and the third through hole 1221. The hinge pin 13 is a cylindrical pin, and a blade adjustment hole 131 is provided at its lower part along its axial direction for connecting the compressor blades 5. It should be noted that the blade adjustment hole 131 is coaxial with the third through hole 1221. A second limiting hole 132 and a second positioning hole 133 are provided on the hinge pin 13 in a direction perpendicular to its axis. Further, the second limiting hole 132 and the second positioning hole 133 of the hinge pin 13 correspond to the positions of the first limiting hole 1222 and the first positioning hole 1223 of the crank 12.

[0060] In the prior art, when the crank assembly is installed into the casing, due to the coaxiality deviation between the crank mounting hole of the crank bracket and the blade mounting hole of the casing, there are positional deviations between the inner side of the crank bracket side plate and the axes of the crank mounting hole and the blade mounting hole, angular deviations between the mounting hole of the crank bracket and the axes of the crank mounting hole and the blade mounting hole, and clearance deviations between the mounting hole of the crank bracket and the bolt holes on the casing. As a result, there are a large number of deviations between the crank mounting hole of the crank bracket and the blade mounting hole of the casing, which affects the installation of the crank and causes the crank to jam.

[0061] In this embodiment, a first through hole 1111 and a second through hole 1121 are respectively provided on the upper plate 111 and the lower plate 112 of the crank bracket 11 to jointly support the crank 12. The first through hole 1111 and the second through hole 1121 are coaxially arranged, which ensures the coaxiality of the crank assembly 1 when it is installed to the adjustment mechanism, reduces cumulative errors, ensures installation accuracy, and prevents jamming during the rotation of the crank 12. Compared with the prior art, the crank 12 in this embodiment is provided with a hinge pin 13, which is disposed in the first through hole 1111 and the second through hole 1121. The crank 12 and the hinge pin 13 are supported on the crank bracket 11 by an interference fit. During the disassembly and assembly of the engine, the crank 12, the hinge pin 13, and the crank bracket 11 participate as a whole. Therefore, under load, there is no situation where the gap between the crank 12 and the hinge pin 13 will increase and the parts will deform, thus ensuring the rigidity of the crank bracket 11 in supporting the crank 12.

[0062] Furthermore, it also includes a limiting pin 14 and a positioning pin 15. The limiting pin 14 is used to limit the relative position of the crank 12 and the hinge pin 13, and the positioning pin 15 is used to limit the relative position of the crank 12, the hinge pin 13, and the blade 5. The limiting pin 14 and the positioning pin 15 are stepped pins, including a head and a rod. The rod of the limiting pin 14 passes through the first limiting hole 1222 and the second limiting hole 132, and the tail is inserted into the cotter pin 16 for fixation. The rod of the positioning pin 15 passes through the first positioning hole 1223 and the second positioning hole 133, and after the blade 5 is installed, it passes through the third positioning hole 521 of the blade 5, and the tail is inserted into the cotter pin 16 for fixation.

[0063] To enable the crank 12 and blade 5 to rotate together with the hinge pin 13 and to further enhance the integrity of the crank 12 and hinge pin 13, this embodiment sets the limiting pin 14 used to connect the crank 12 and hinge pin 13 to be interference-fitted with the first limiting hole 1222 and the second limiting hole 132. The positioning pin 15 used to connect the crank 12, blade 5 and hinge pin 13 is interference-fitted with the second positioning hole 133 of the hinge pin 13 and the third positioning hole 521 of the blade 5. The positioning pin 15 is fitted with the first positioning hole 1223 with a large clearance to avoid overfitting.

[0064] Furthermore, in order to reduce friction and provide positioning and support for the hinge pin 13, the crank assembly 1 is also provided with a first bushing 17 and a second bushing 18, which are respectively disposed in the first through hole 1111 and the second through hole 1121.

[0065] For example, the first bushing 17 and the second bushing 18 are made of wear-resistant and friction-reducing materials. The first bushing 17 and the second bushing 18 include a cylindrical end and a flange end. The end faces of the flange ends of the first bushing 17 and the second bushing 18 respectively abut against the end faces of the two ends of the first connecting portion 122 of the crank 12, and the cylindrical ends respectively extend into the first through hole 1111 and the second through hole 1121.

[0066] Furthermore, the first bushing 17 and the second bushing 18 have bushing holes at their centers, and the two ends of the hinge pin 13 extend into the bushing holes of the first bushing 17 and the second bushing 18, respectively. In order for the hinge pin 13 to rotate relative to the first bushing 17 and the second bushing 18, the hinge pin 13 and the bushing holes are clearance-fitted.

[0067] In this embodiment, a first bushing 17 and a second bushing 18 are provided. On the one hand, the first bushing 17 and the second bushing 18 have the function of guiding and supporting the hinge pin 13. On the other hand, the hinge pin 13 forms a rotational fit with the first bushing 17 and the second bushing 18 to prevent wear on the crank bracket 11. When replacing, only the bushing needs to be replaced.

[0068] Specifically, the bushing holes of the first bushing 17 and the second bushing 18 are coaxial with the third through hole 1221.

[0069] In this embodiment, a first through hole 1111 and a second through hole 1121 are respectively provided on the upper plate 111 and the lower plate 112 of the crank bracket 11 to jointly support the crank 12; the first through hole 1111 and the second through hole 1121 are coaxially arranged with the blade adjustment hole 131 to ensure the coaxiality of the crank assembly 1 when it is installed to the adjustable stator adjustment mechanism.

[0070] Example 2

[0071] This embodiment discloses an adjustment mechanism for an adjustable stator, used to drive the stator blades of the adjustable stator to rotate as required, such as... Figures 6-8 As shown, it includes a housing 2, a linkage ring 3, and a crank assembly 1 as described in Embodiment 1.

[0072] The outer side of the casing 2 has at least one mounting surface 223; the linkage ring 3 is coaxially arranged with the casing 2 and is located on the outer side of the casing 2; the crank assembly 1 is located on the mounting surface 223; the crank assembly 1 is connected to the linkage ring 3.

[0073] For example, such as Figure 9 As shown, the casing body 21 is cylindrical to accommodate the circular cross-section of the compressor. The two end faces of the casing 2 are planar, with their outer edges extending radially outwards. A circular protrusion, the outer ring 22 of the blade, is located in the center of the outer surface of the casing 2, used to mount the blade 5. The outer ring 22 has multiple blade mounting holes 222 arranged circumferentially. Both the upper and lower ends of the blade mounting holes 222 are stepped holes.

[0074] When installed with the crank bracket 11, the end face of the outer ring 22 of the blades of the casing 2 is machined into a flat surface as the mounting surface 223, which is used to fit against the reference surface 1123 of the crank bracket 11. Bolt holes 221 are provided on both sides of the blade mounting hole 222 of the mounting surface 223, which correspond to the fixing holes 1122 of the crank bracket 11, and bolts are inserted to fix the crank assembly 1. When the crank assembly 1 is installed on the casing 2, the lower end face of the crank bracket lower plate 112 fits against the mounting surface 223, the second through hole 1211 of the crank bracket 11 corresponds to the blade mounting hole 222 of the casing 2, and the positioning part 114 of the crank bracket 11 is provided in the blade mounting hole 222.

[0075] Furthermore, at least one crank assembly 1 is mounted to the casing 2. When there are multiple crank assemblies 1, the crank assemblies 1 are symmetrically arranged on the outer ring 22 of the blades of the casing 2.

[0076] like Figure 6 As shown, the linkage ring 3 is disposed outside the housing 2 and is coaxial with the housing 2. The linkage ring 3 has a plurality of circumferentially arranged rocker arm mounting holes 31 parallel to the axis. The rocker arm mounting holes 31 are used to mount the rocker arm 6. At least one rocker arm mounting hole 31 is fitted with a second connecting part 123 of the crank 12, which drives the linkage ring 3 to rotate when the crank 12 rotates.

[0077] Example 3

[0078] This embodiment provides an aero-engine compressor, including blades 5 and the adjustable stator adjustment mechanism described in Embodiment 2.

[0079] Multiple blades 5 are correspondingly disposed in blade mounting holes 222; linkage ring 3 is connected to multiple blades 5; at least one blade 5 is connected to crank assembly 1.

[0080] Specifically, such as Figure 6 As shown, multiple blades 5 are provided, and the multiple blades 5 are correspondingly arranged in the blade mounting holes 222 of the casing 2.

[0081] The blade 5 connected to the crank assembly 1 has a blade mounting end 52 that extends into the blade adjustment hole 131.

[0082] Furthermore, it also includes a third bushing 4, such as Figure 8 As shown, the third bushing 4 is disposed in the lower stepped hole of the blade mounting hole 222. The third bushing 4 has a bushing hole in the middle for the blade 5 to pass through.

[0083] The blade mounting end 52 of the blade 5 connected to the crank assembly 1 passes through the bushing hole of the third bushing 4 and the second mounting hole 222 of the blade 5, and extends into the blade adjustment hole 131 of the hinge pin 13.

[0084] Furthermore, it also includes a rocker arm 6. One end of the rocker arm 6 is connected to the blade 5, and the other end extends into the rocker arm mounting hole 31 and is connected to the linkage ring 3. The blade 5 is connected to the linkage ring 3 through the rocker arm 6, thereby connecting the linkage ring 3 to the blade 5. The movement of the linkage ring 3 drives the blade 5 to rotate. The second connecting part 123 of the crank 12 extends into one of the rocker arm mounting holes 31 and is fixed to the linkage ring 3 by a connecting pin.

[0085] The blade 5 also includes a blade body 51. The blade body 51 is located inside the casing 2.

[0086] like Figure 10 As shown, a third positioning hole 521 is provided at the upper end of the blade 5, which corresponds to the first positioning hole 1223 and the second positioning hole 133. The positioning pin 15 is inserted into the first positioning hole 1223, the second positioning hole 133 and the third positioning hole 521 to position the relative position of the blade 5 and the hinge pin 13.

[0087] Furthermore, the locating pin 15 is clearance-fitted with the first locating hole 1223, and the locating pin 15 is interference-fitted with the second locating hole 133 and the third locating hole 521.

[0088] In this embodiment, a hinge pin 13 is provided in the crank 12, and a blade 5 is provided below the hinge pin 13. The rotation of the hinge pin 13 in the first through hole 1111 and the second through hole 1121 of the upper plate 111 and the lower plate 112 drives the rotation of the crank 12 and the blade 5. The hinge pin 13, the crank 12, and the blade 5 form a whole, which increases the support for the crank 12 and improves the control accuracy of the blade 5. In this embodiment, the crank 12, the hinge pin 13, and the blade 5 form a whole, further improving the control accuracy of the blade 5.

[0089] Compared with the prior art, the advantages of the compressor of the aero-engine in this embodiment of the present invention are the same as those of the crank assembly 1 and the adjustable stator adjustment mechanism described above, and will not be repeated here.

[0090] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A crank assembly, characterized in that, Includes crank bracket (11), crank (12) and hinge pin (13); The crank bracket (11) includes an upper plate (111) and a lower plate (112); the upper plate (111) is provided with a first through hole (1111), and the lower plate (112) is provided with a second through hole (1121); the first through hole (1111) and the second through hole (1121) are coaxially arranged; The crank (12) includes a first connecting part (122), which is disposed between the upper plate (111) and the lower plate (112); the center of the first connecting part (122) has a third through hole (1221) extending along the axial direction; The hinge pin (13) is disposed in the first through hole (1111), the second through hole (1121) and the third through hole (1221).

2. The crank assembly according to claim 1, characterized in that, The crank bracket (11) also includes a positioning part (114); the positioning part (114) is disposed at the lower part of the lower plate (112), and the positioning part (114) is used for positioning when the crank assembly is assembled into the housing (2) of the adjustment mechanism.

3. The crank assembly according to claim 2, characterized in that, The positioning part (114) has a through hole at its center, and the through hole is connected to the second through hole (1121).

4. The crank assembly according to claim 1, characterized in that, It also includes a first bushing (17) and a second bushing (18); the first bushing (17) and the second bushing (18) are respectively disposed in the first through hole (1111) and the second through hole (1121).

5. The crank assembly according to claim 4, characterized in that, The first bushing (17) and the second bushing (18) are provided with bushing holes at their centers, and the two ends of the hinge pin (13) are respectively provided in the bushing holes of the first bushing (17) and the second bushing (18); the hinge pin (13) rotates in the bushing holes.

6. An adjustment mechanism for an adjustable stator, characterized in that, Includes a casing (2), a linkage ring (3), and a crank assembly as described in any one of claims 1-5; The outer surface of the casing (2) has at least one mounting surface (223); The linkage ring (3) is coaxially arranged with the casing (2), and the linkage ring (3) is located outside the casing (2); The crank assembly is disposed on the mounting surface (223); the crank assembly is connected to the linkage ring (3).

7. The adjustable stator adjustment mechanism according to claim 6, characterized in that, The lower end face of the lower plate (112) is in contact with the mounting surface (223); The casing (2) has a plurality of blade mounting holes (222) evenly distributed around its circumference, and the positioning part (114) of the crank bracket (11) is located in the blade mounting holes (222); the second through hole (1121) corresponds to the blade mounting holes (222).

8. The adjustable stator adjustment mechanism according to claim 6, characterized in that, The crank (12) further includes a second connecting part (123), and the linkage ring (3) has a rocker arm mounting hole (31), in which the second connecting part (123) is located.

9. An aero-engine compressor, characterized in that, Includes blades (5) and the adjustable stator adjustment mechanism as described in any one of claims 6-8; Multiple blades (5) are correspondingly disposed in the blade mounting holes (222); The linkage ring (3) is connected to a plurality of blades (5); at least one blade (5) is connected to the crank assembly.

10. The aero-engine compressor according to claim 9, characterized in that, The lower part of the hinge pin (13) is provided with a blade adjustment hole (131) along its axial direction; the blade mounting end (52) of the at least one blade (5) connected to the crank assembly is located in the blade adjustment hole (131).

Images