Guide vane fixing device

Abstract

The present invention discloses a guide vane fixing device, including a fixing component, a hook component and an adjusting component. The fixing component is used to be connected to a turbine casing; one end of the hook component is connected to the fixing component, and the other end of the hook component extends in a direction away from the fixing component, and the hook component is used to fix the guide vane from the end of the guide vane; one end of the adjusting component is connected to the fixing component, and the other end of the adjusting component is movably connected to the hook component, and the adjusting component can adjust the position of the hook component extending outward from the fixing component along the radial direction of the turbine casing. In the guide vane fixing device of the present invention, the hook component is installed on the fixing component through the adjusting component, and the end of the guide vane is fixed by the hook component. In the process of installing the guide vane to the turbine casing, the hook component fixes the guide vane away from one end of the turbine casing, so that the two ends of the guide vane remain horizontal, avoiding the situation where the guide vane is stuck due to different heights at the two ends of the guide vane, and improving the guide vane installation efficiency.

Description

Technical Field

[0001] The invention relates to the field of aero engines, and in particular to a guide vane fixing device. Background Art

[0002] like Figure 1 As shown, the low-pressure turbine stator of the aircraft engine is composed of multiple stages of stators, and each stage of stator is composed of multiple guide vanes 3' (sector segments) to form a complete ring and then fixed on the turbine casing 1'. The fixing method of the guide vane 3' is as follows Figure 2 As shown, a slot is provided on one side of each guide vane 3' close to the front end of the turbine casing 1', and the guide vane 3' is mounted on the turbine casing 1' and the end edge plate of the front-stage outer ring. After the guide vane 3' of this stage forms a complete ring, the end of the guide vane 3' is pressed from the rear end direction of the turbine casing 1' by the retaining ring 4' to limit its axial movement along the turbine casing 1', and then the guide vane 3' is clamped on the turbine casing 1' through the slot of the rear-stage outer ring 5' to limit the radial movement of the guide vane 3' along the turbine casing 1'. The assembly mode of the guide vane 3' is piece by piece. After the complete ring is formed, the retaining ring 4' and the rear-stage outer ring 5' are installed in sequence to fix the guide vane 3' of this stage on the turbine casing 1'. Since the fixing structure of the guide vane 3' is similar to a cantilever beam, during the assembly of the guide vane 3', the inner side of the guide vane 3' is tilted toward the front end direction of the turbine casing 1' due to the influence of gravity, so that the guide vane 3' cannot be hung on the inner wall of the casing. In the conventional assembly process, a pad 2' needs to be placed on the front-stage guide vane 3' to support the rear-stage guide vane 3' from the inside. Since the profile of the guide vane 3' is an irregular plane, the pad 2' cannot be placed horizontally, so that each pad 2' is of different heights, resulting in the rear-stage guide vanes 3' being misaligned and uneven. The overlapping surfaces of adjacent guide vanes 3' are inclined overlaps. When the guide vanes 3' are of different heights, the adjacent guide vanes 3' will bite each other, making the guide vanes 3' unable to move. Once the guide vanes 3' are stuck in installation, the pad 2' needs to be replaced and the placement height of each guide vane 3' needs to be adjusted. The debugging cycle is long, making the installation efficiency of the guide vanes 3' low. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a guide vane fixing device in order to overcome the defect in the prior art that the guide vanes are easily uneven in height and adjacent guide vanes are bitten into each other when the guide vanes are supported by pads.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] A guide vane fixing device is used to fix the guide vane of an aircraft engine to a turbine casing, and the guide vane fixing device comprises:

[0006] a fixing assembly for connecting to the turbine casing;

[0007] A hook assembly, one end of which is connected to the fixing assembly, and the other end of which extends in a direction away from the fixing assembly, and the hook assembly is used to fix the guide vane from the end of the guide vane;

[0008] An adjusting component, one end of which is connected to the fixing component, and the other end of which is movably connected to the hook component, wherein the adjusting component can adjust the position of the hook component extending outward from the fixing component along the radial direction of the turbine casing.

[0009] In this solution, the hook assembly is installed on the fixing assembly through the adjusting assembly, and the end of the guide vane is fixed by the hook assembly. During the process of installing the guide vane to the turbine casing, the hook assembly fixes the guide vane away from one end of the turbine casing, so that the two ends of the guide vane remain level, avoiding the situation where the guide vane is stuck due to different heights at the two ends of the guide vane, thereby improving the guide vane installation efficiency.

[0010] Preferably, the adjusting component includes a movable part, the movable part is movably connected to the fixed component, and the movable part abuts against the hook component, and the movable part can move relative to the fixed component to change the position of the hook component relative to the fixed component.

[0011] In the present solution, a movable part is arranged to abut against the hook assembly, and the position of the hook assembly along the radial direction of the turbine casing is adjusted by moving the movable part relative to the fixed assembly. During the adjustment process, only the position of the movable part needs to be adjusted, thereby reducing the number of parts that need to be moved in the guide vane fixing device during the adjustment process and simplifying the structure of the guide vane fixing device.

[0012] Preferably, one end of the movable portion is hinged to the fixed assembly.

[0013] In the present solution, by hingedly connecting one end of the movable part to the fixed component, the movable part rotates around the hinge point when adjusting the position of the hook component, and the movable part is rotated to adjust the radial position of the hook component along the turbine casing. The linear motion of the driving part is reduced by the rotation of the movable part and then transmitted to the radial motion of the hook component along the turbine casing, thereby improving the accuracy of the position adjustment of the hook component.

[0014] Preferably, a roller is pivotally connected to the other end of the movable portion, and the hook assembly is movably connected to the movable portion via the roller.

[0015] In this solution, a roller is provided at one end of the movable part connected to the hook assembly, and a connecting piece of the hook assembly is connected to the movable part via the roller. During the adjustment process, the connecting piece rolls around the roller to reduce wear and extend the service life of the connecting piece.

[0016] Preferably, the adjustment assembly further comprises a driving portion, wherein the driving portion is connected to the fixed assembly, and the driving portion is connected to the movable portion and is used to drive the movable portion to move relative to the fixed assembly.

[0017] In the present solution, a driving part is provided to drive the movable part, and the driving part has both driving and positioning functions. When the position of the movable part needs to be adjusted, the driving part is rotated to change the position of the movable part; when the movable part needs to be fixed in position, the driving part does not need to be rotated, and the driving part can achieve self-locking to lock the position of the movable part.

[0018] Preferably, the adjustment assembly further comprises a connecting portion, and two ends of the connecting portion are respectively connected to the driving portion and the movable portion.

[0019] In this solution, a rigid connecting part is provided, and the two ends of the connecting part are respectively connected to the driving part and the movable part, so that the linear motion of the driving part is converted into the rotational motion of the movable part. The connecting part structure of this solution is simple and reliable, and the structure of the adjustment component is simplified.

[0020] Preferably, the hook assembly includes a connecting member and a hook, and the hook is connected to the fixing assembly through the connecting member.

[0021] In the present scheme, an adjusting assembly is arranged along the radial direction of the turbine casing, and a hook is hung on the adjusting assembly. The hook hangs down vertically along the axial direction of the turbine casing, so that the pulling force of the hook on the guide vane is vertically upward. The pulling force of the hook on the guide vane is theoretically completely along the gravity direction of the guide vane, avoiding the pulling force of the hook on the guide vane to produce a component force not in the gravity direction of the guide vane, thereby improving the stability of the tension of the hook on the guide vane.

[0022] Preferably, the guide vane fixing device also includes a one-way locking component, which is connected to the fixing component, and the connecting piece is rolled up on the one-way locking component, and the one-way locking component has a one-way locking state and an unlocking state. When the one-way locking component is in the unlocking state, the one-way locking component can tighten or release the connecting piece; when the one-way locking component is in the one-way locking state, the connecting piece can only tighten the connecting piece.

[0023] In the present solution, by setting a one-way locking component, the hook component can be released in the unlocked state, and the hook component can be tightened in the locked state. During the use of the guide vane fixing device, the position of the hook component along the axial direction of the turbine casing can be conveniently adjusted to ensure that the hook component can be hung on the inner side of the corresponding guide vane when tightening the guide vane, thereby avoiding excessive or insufficient tension.

[0024] Preferably, the one-way locking assembly includes a ratchet and a pawl, and the connecting member is wound around the ratchet. When the pawl abuts against the ratchet, the one-way locking assembly is in the one-way locking state; when the pawl is disengaged from the ratchet, the one-way locking assembly is in the unlocking state.

[0025] In the present scheme, the ratchet is locked by a pawl. When the pawl abuts against the ratchet, the ratchet can only rotate in one direction to tighten the connecting piece; when the pawl is disengaged from the ratchet, the ratchet can rotate in both directions to tighten or release the connecting piece; the ratchet and the pawl form a one-way locking assembly, which has a simple structure and occupies little space, thereby simplifying the structure of the one-way locking assembly.

[0026] Preferably, the hook comprises a clamping portion and a middle portion, the clamping portions are fixedly provided on both sides of the middle portion, the cross section of the hook is in a side "U" shape, and the distance between the two clamping portions matches the width of the guide vane end.

[0027] In this solution, the hook is shaped like a side "U" and is clamped to one end of the guide vane when in use. The clamping of the hook and the guide vane is reliable and easy to disassemble. The hook can be quickly and conveniently clamped to the guide vane, thereby improving the installation efficiency of the guide vane.

[0028] The positive and progressive effects of the present invention are:

[0029] The guide vane fixing device of the present invention has a hook component installed on the fixing component through an adjusting component, and the end of the guide vane is fixed by the hook component. During the process of installing the guide vane to the turbine casing, the hook component fixes the guide vane at one end away from the turbine casing, so that the two ends of the guide vane are kept horizontal, avoiding the situation where the guide vane is stuck due to different heights at the two ends of the guide vane, thereby improving the guide vane installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the turbine stator structure.

[0031] Figure 2 It is a schematic diagram of fixing the stator guide vanes in the prior art.

[0032] Figure 3 It is a schematic diagram of fixing a guide vane by the guide vane fixing device of the present invention.

[0033] Figure 4 It is a structural schematic diagram of the guide vane fixing device of the present invention installed on the turbine casing.

[0034] Figure 5 It is a schematic diagram of the side structure of the guide vane fixing device of the present invention.

[0035] Figure 6 It is a schematic structural diagram of the guide vane fixing device of the present invention.

[0036] Figure 7 This is a schematic diagram of the structure of the one-way locking assembly of the guide vane fixing device of the present invention.

[0037] In the prior art:

[0038] Turbine case 1'

[0039] Pad 2'

[0040] Guide vane 3'

[0041] Retaining ring 4'

[0042] Post-stage outer ring 5'

[0043] In the present invention:

[0044] Guide vane fixing device 100

[0045] Fixing component 1

[0046] Hook component 2

[0047] Connector 21

[0048] Hook 22

[0049] Clamping portion 221

[0050] Middle part 222

[0051] Adjustment component 3

[0052] Activities Department 31

[0053] Roller 32

[0054] Driving unit 33

[0055] Connecting part 34

[0056] Guide part 341

[0057] One-way locking assembly 4

[0058] Ratchet 41

[0059] Pawl 42

[0060] Turbine case 200

[0061] Guide vane 300 DETAILED DESCRIPTION

[0062] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0063] like Figure 3As shown, the present invention provides a guide vane fixing device 100 for fixing a guide vane 300 of an aircraft engine to a turbine casing 200 . The guide vane fixing device 100 includes a fixing component 1 , a hook component 2 and an adjustment component 3 .

[0064] The fixing assembly 1 is used to connect to the turbine casing 200. In this embodiment, two through holes are provided on the fixing assembly 1, and corresponding through holes are provided on the top wall of the turbine casing 200. After the bolts pass through the through holes on the fixing assembly 1 and the turbine casing 200 from top to bottom, the bolts are locked with nuts, thereby achieving a fixed connection between the fixing assembly 1 and the turbine casing 200. In other embodiments, a snap-in groove matching the top structure of the turbine casing 200 may also be provided at the bottom of the fixing assembly 1 to install the fixing assembly 1 on the turbine casing 200.

[0065] One end of the hook assembly 2 is connected to the fixing assembly 1, and the other end of the hook assembly 2 extends in a direction away from the fixing assembly 1. The hook assembly 2 is used to fix the guide vane 300 from the end of the guide vane 300. The turbine casing 200 is a cylindrical structure as a whole, and multiple stages of stators are installed along the axial direction of the turbine casing 200. Each stage of stators includes a guide vane 300 along the circumferential direction of the turbine casing 200. One end of the guide vane 300 is fixedly installed on the wall of the turbine casing 200, and the other end of the guide vane 300 extends along the radial direction of the turbine casing 200 toward the axial direction of the turbine casing 200. The hook assembly 2 hooks one end of the guide vane 300 close to the axial direction of the turbine casing 200.

[0066] One end of the adjustment component 3 is connected to the fixed component 1, and the adjustment component 3 is installed on the fixed component 1. The other end of the adjustment component 3 is movably connected to the hook component 2, and the adjustment component 3 can adjust the position of the hook component 2 extending outward from the fixed component 1 along the radial direction of the turbine casing 200, and one end of the adjustment component 3 close to the axis of the turbine casing 200 abuts against the connecting piece 21 of the hook component 2. The adjusting component 3 can move in the radial direction of the turbine casing 200, thereby driving the connecting part 21 of the hook component 2 to move in the radial direction of the turbine casing 200. The hook 22 of the hook component 2 is suspended downward from the adjusting component 3 along the axial direction of the turbine casing 200. By changing the position of the adjusting component 3 in the radial direction of the turbine casing 200, the position of the hook 22 in the radial direction of the turbine casing 200 is changed, so that the hook 22 can vertically tighten the end of the guide vane 300 upward, ensuring that the pulling direction of the hook 22 on the guide vane 300 is vertically upward along the axial direction of the turbine casing 200, minimizing the force in other directions, and improving the stability of the guide vane fixing device 100 when fixing the guide vane 300.

[0067] The adjustment component 3 includes a movable part 31, which includes two plates arranged opposite to each other and a connecting rod between the plates, and a gap is provided between the two plates. The movable part 31 is movably connected to the fixed component 1, and the bottom end of the movable part 31 is movably connected to the fixed component 1 through a rotating shaft. The movable part 31 abuts against the hook component 2, and the top end of the movable part 31 abuts against the connecting piece 21 of the hook component 2. Figure 5 As shown, one end of the movable part 31 is hinged to the fixed component 1, and the movable part 31 can move relative to the fixed component 1. The movable part 31 is hinged to the fixed component 1 through a rotating shaft, and the movable part 31 changes its position relative to the fixed component 1 by rotating around the rotating shaft. The movable part 31 rotates around the rotating shaft at the bottom of the movable part 31, and the top of the movable part 31 moves along the radial direction of the turbine casing 200, and the movable part 31 always abuts against the connecting member 21, and the position of the hook component 2 relative to the fixed component 1 is changed by the movement of the movable part 31.

[0068] The other end of the movable part 31 is pivotally connected with a roller 32, which is installed between two plates installed opposite to the movable part 31. A through hole is provided at the center of the roller 32, and two through holes are provided opposite to each other on the movable part 31. After the shaft passes through the through holes on the two plates and the roller 32 respectively, the roller 32 and the movable part 31 are connected, and the roller 32 can rotate around the shaft. A receiving groove is provided on the outer ring of the roller 32, and the hook assembly 2 is movably connected to the movable part 31 through the roller 32. The connecting member 21 of the hook assembly 2 is embedded in the receiving groove to prevent the connecting member 21 from detaching from the roller 32 along the axial movement of the roller 32. When the movable part 31 moves relative to the fixed assembly 1, the movable part 31 drives the hook assembly 2 to move radially along the turbine casing 200 through the roller 32 at the top.

[0069] The adjustment component 3 also includes a driving part 33. In this embodiment, the driving part 33 includes a threaded rod with an external thread. A corresponding threaded hole is provided on the fixing component 1. The driving part 33 is connected to the fixing component 1. The driving part 33 is engaged with the fixing component 1 through a thread. The driving part 33 is engaged and connected with the fixing component 1 along the axial direction of the fixing component 1. During use, by rotating the driving part 33 around its central axis, the driving part 33 moves axially under the action of the thread. The axial direction of the driving part 33 is arranged along the radial direction of the turbine casing 200. The driving part 33 is connected to the movable part 31 and is used to drive the movable part 31 to move relative to the fixing component 1. By rotating the driving part 33, the driving part 33 drives the movable component to move radially along the turbine casing 200.

[0070] like Figure 6As shown, the adjustment assembly 3 also includes a connecting portion 34, and the two ends of the connecting portion 34 are respectively connected to the driving portion 33 and the movable portion 31. The connecting portion 34 includes a long strip and a guide portion 341, wherein the guide portion 341 is movably connected to the driving portion 33, and one end of the driving portion 33 is movably connected to the guide portion 341. A through hole is provided in the middle of the guide portion 341. The driving portion 33 passes through the through hole on the guide portion 341 and then locks the driving portion 33 and the guide portion 341 through a fastener, so that when the driving portion 33 rotates around its axis, it will not drive the guide portion 341 to rotate, and when the driving portion 33 moves along the axis direction of the fixed assembly 1, it can drive the guide portion 341 to move. The two ends of the guide portion 341 are clamped in the groove of the fixed assembly 1, and the guide portion 341 can only move along the groove of the fixed assembly 1 along the radial direction of the turbine casing 200. The guide portion 341 is also provided with two mounting seats, and through holes are provided on the two mounting seats in opposite directions. Through holes are provided at both ends of the long plate, wherein one end of the long plate is clamped in the two mounting seats on the guide portion 341, and the through holes on the long plate match the through holes on the mounting seats. The movable shaft passes through the mounting seats and the through holes on the long plate to flexibly connect the long plate and the guide portion 341. The other end of the long plate is arranged between the two side plates of the movable portion 31, and two through holes are provided on the two side plates of the movable portion 31 in opposite directions. The rotary shaft passes through the through holes on the long plate and the movable portion 31 to flexibly connect the long plate and the movable portion 31. The driving portion 33 is connected to the movable portion 31 through the connecting portion 34, and the movement of the driving portion 33 along the axial direction of the fixing assembly 1 is converted into the rotation of the movable portion 31 around the rotary shaft, thereby driving the hook 22 to move radially along the turbine casing 200.

[0071] The hook assembly 2 also includes a connector 21 and a hook 22, and the hook 22 is connected to the fixing assembly 1 through the connector 21. The top end of the hook 22 is fixedly connected to the connector 21. One end of the connector 21 is connected to the hook 22, and the other end of the connector 21 is wound around the ratchet 41 of the one-way locking assembly 4. The connector 21 is released or wound around the ratchet 41 by rotating the ratchet 41, thereby adjusting the position of the hook 22 hanging down along the axis of the turbine casing 200, ensuring that the hook 22 will not be pulled too tight or too loose when tightening the guide vane 300. In this embodiment, the connector 21 is a soft rope, and in other embodiments, the connector 21 may also be a rope made of other flexible materials such as a wire rope or a cotton rope.

[0072] The guide vane fixing device 100 further includes a one-way locking assembly 4, which is connected to the fixing assembly 1, and the connecting member 21 is wound on the one-way locking assembly 4. The one-way locking assembly 4 has a one-way locking state and an unlocking state. When the one-way locking assembly 4 is in the unlocking state, the one-way locking assembly 4 can tighten or release the connecting member 21; when the one-way locking assembly 4 is in the one-way locking state, the connecting member 21 can only tighten the connecting member 21. In this embodiment, the one-way locking assembly 4 includes a ratchet 41 and a pawl 42. In other embodiments, the one-way locking assembly 4 can also be a mechanism composed of a turbine and a worm, and the connecting member 21 of the hook assembly 2 is wound on the turbine. By selecting a suitable lead angle between the turbine and the worm to achieve self-locking of the worm, the one-way locking of the connecting member 21 is achieved, thereby preventing the connecting member 21 from extending under the pulling force of the hook 22.

[0073] like Figure 7 As shown, the one-way locking assembly 4 includes a ratchet 41 and a pawl 42, the connecting member 21 is wound on the ratchet 41, one end of the connecting member 21 is fixedly connected to the ratchet 41, and the other end of the connecting member 21 is fixedly connected to the hook 22. When the ratchet 41 rotates forward around the rotary axis, the ratchet 41 winds more and more connecting members 21 around the ratchet 41, so that the connecting members 21 hanging on the outside gradually decrease, and the hook 22 moves upward along the axis direction of the turbine casing 200 under the pull of the connecting member 21. When the pawl 42 abuts against the ratchet 41, the one-way locking assembly 4 is in a one-way locking state. In this embodiment, a spring is further provided on the fixing assembly 1, one end of the spring is fixedly connected to the fixing assembly 1, and the other end of the spring abuts against the pawl 42. In a natural state, the spring abuts against the pawl 42 to make the pawl 42 abut against the ratchet 41. When the pawl 42 abuts against the ratchet 41, the ratchet 41 can only rotate forward but cannot be reversed. When the pawl 42 is disengaged from the ratchet 41 , that is, the spring is disengaged from the pawl 42 , the one-way locking assembly 4 is in an unlocked state. At this time, the ratchet 41 can rotate forward to tighten the connecting member 21 , and can also be turned over to release the connecting member 21 .

[0074] The hook 22 includes a clamping portion 221 and a middle portion 222. The clamping portions 221 are fixedly provided on both sides of the middle portion 222. When the hook 22 is fixedly connected to the inner side of the guide vane 300, the two clamping portions 221 are respectively fixedly connected to the upper and lower parts of the inner side of the guide vane 300. The cross section of the hook 22 is in a side "U" shape. The distance between the two clamping portions 221 matches the width of the end of the guide vane 300, so that the two clamping portions 221 can be clamped to the end of the guide vane 300.

[0075] like Figure 4 As shown, the tensioning fixation of the guide vane 300 is completed:

[0076] S1, such as Figure 2As shown, the guide vane 300 is installed on the turbine casing 200, and the front clamping groove of the guide vane 300 clamps the front stage outer wall and the casing mounting groove;

[0077] S2, placing the guide vane fixing device 100 on the rear mounting edge of the casing, aligning the mounting holes and fixing them with bolts and nuts;

[0078] S3, the driving part 33 is rotated to drive the movable part 31 to move radially inward or outward, and the connecting part 34 is driven to pull the movable part 31 to rotate inward or outward around the hinge axis, thereby adjusting the radial length of the tensioner 1 so that the soft rope is approximately above the inner side of the guide vane 300;

[0079] S4, pushing the pawl 42 along the rotation axis direction of the ratchet 41, so that the pawl 42 is disengaged from the ratchet 41;

[0080] S5, pulling the hook 22 so that the hook 22 hooks the inner side of the guide vane 300;

[0081] S6, pushing the pawl 42 along the rotation axis direction of the ratchet 41 so that the pawl 42 contacts the ratchet 41;

[0082] S7, rotating the ratchet wheel 41 to tighten the soft rope, so as to achieve vertical tightening and fixing of the inner side of the guide vane 300;

[0083] S8, repeat S1-S7 until all guide vanes 300 of this stage are installed;

[0084] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A guide vane fixing device, used for fixing the guide vane of an aircraft engine to a turbine casing, characterized in that: The guide vane fixing device comprises: a fixing assembly for connecting to the turbine casing; A hook assembly, one end of which is connected to the fixing assembly, and the other end of which extends in a direction away from the fixing assembly, and the hook assembly is used to fix the guide vane from the end of the guide vane; An adjusting component, one end of which is connected to the fixing component, and the other end of which is movably connected to the hook component, wherein the adjusting component is capable of adjusting a position of the hook component extending outward from the fixing component along a radial direction of the turbine casing; The adjusting assembly includes a movable portion, the movable portion is movably connected to the fixing assembly, and the movable portion abuts against the hook assembly, and the movable portion can move relative to the fixing assembly to change the position of the hook assembly relative to the fixing assembly; One end of the movable part is hinged to the fixed component; The other end of the movable part is pivotally connected with a roller, and the hook assembly is movably connected to the movable part through the roller.

2. The guide vane fixing device according to claim 1, characterized in that: The adjusting assembly further comprises a driving part, wherein the driving part is connected to the fixing assembly, and the driving part is connected to the movable part and is used for driving the movable part to move relative to the fixing assembly.

3. The guide vane fixing device according to claim 2, characterized in that: The adjusting component also includes a connecting portion, two ends of which are respectively connected to the driving portion and the movable portion.

4. The guide vane fixing device according to claim 1, characterized in that: The hook assembly comprises a connecting member and a hook, and the hook is connected to the fixing assembly through the connecting member.

5. The guide vane fixing device according to claim 4, characterized in that: The guide vane fixing device also includes a one-way locking component, which is connected to the fixing component. The connecting piece is rolled up on the one-way locking component. The one-way locking component has a one-way locking state and an unlocking state. When the one-way locking component is in the unlocking state, the one-way locking component can tighten or release the connecting piece; when the one-way locking component is in the one-way locking state, the connecting piece can only tighten the connecting piece.

6. The guide vane fixing device according to claim 5, characterized in that: The one-way locking assembly includes a ratchet and a pawl, and the connecting member is wound around the ratchet. When the pawl abuts against the ratchet, the one-way locking assembly is in the one-way locking state; when the pawl is disengaged from the ratchet, the one-way locking assembly is in the unlocking state.

7. The guide vane fixing device according to claim 4, characterized in that: The hook comprises a clamping portion and a middle portion, the clamping portions are fixedly provided on both sides of the middle portion respectively, the cross section of the hook is in a side "U" shape, and the distance between the two clamping portions matches the width of the guide vane end portion.

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