阅读说明：本技术 防止不锈钢定距螺旋桨热处理变形的支撑装置 (Support device for preventing heat treatment deformation of stainless steel fixed-pitch propeller ) 是由 朱晶 于霄雷 王红嵩 孟庆辉 于 2021-10-09 设计创作，主要内容包括：本发明防止不锈钢定距螺旋桨热处理变形的支撑装置,涉及螺旋桨制造技术领域,尤其涉及不锈钢定距螺旋桨热处理变形控制装置。本发明包括：底盘结构、固定结构和支撑结构；底盘结构为圆形结构,在其上部设置有固定结构和支撑结构；固定结构一端与底盘结构相连接,另一端与放置于固定底盘上待处理的螺旋桨桨毂相连接,对螺旋桨起到固定与定位作用；支撑结构的一端与底盘结构相连接,另一端与螺旋桨桨叶相连接,起到对螺旋桨桨叶的固定与定位作用。本发明的技术方案解决了现有技术中的费工、费料、费时,且伴有影响螺旋桨性能,开裂等问题。(The invention discloses a supporting device for preventing a stainless steel fixed-distance propeller from heat treatment deformation, relates to the technical field of propeller manufacturing, and particularly relates to a heat treatment deformation control device for the stainless steel fixed-distance propeller. The invention comprises the following steps: a chassis structure, a fixed structure and a support structure; the chassis structure is a circular structure, and a fixing structure and a supporting structure are arranged at the upper part of the chassis structure; one end of the fixed structure is connected with the chassis structure, and the other end of the fixed structure is connected with a propeller hub of a propeller to be processed, which is placed on the fixed chassis, so that the fixed structure plays a role in fixing and positioning the propeller; the one end of bearing structure is connected with the chassis structure, and the other end is connected with the screw paddle, plays fixed and the positioning action to the screw paddle. The technical scheme of the invention solves the problems of labor, material and time waste, influence on the performance of the propeller, cracking and the like in the prior art.)

1. The utility model provides a prevent strutting arrangement of stainless steel distance screw thermal treatment deformation which characterized in that:

the supporting device for preventing the stainless steel fixed-pitch propeller from being deformed by heat treatment comprises: a chassis structure, a fixed structure and a support structure;

the chassis structure is a circular structure, and a fixing structure and a supporting structure are arranged at the upper part of the chassis structure;

one end of the fixed structure is connected with the chassis structure, and the other end of the fixed structure is connected with a propeller hub (26) to be processed, which is arranged on the fixed chassis (1), so that the fixed structure can fix and position the propeller;

one end of the supporting structure is connected with the chassis structure, and the other end of the supporting structure is connected with the propeller blades (21), so that the fixing and positioning effects on the propeller blades are achieved.

2. The support device for preventing the heat treatment deformation of the stainless steel distance propeller according to claim 1, wherein:

the fixed knot structure include: a fixed chassis (1) and a telescopic chassis (2);

the fixed chassis (1) is of a circular structure, and 4 telescopic chassis (2) of sector structures are arranged on the outer side of the fixed chassis;

the upper part of the fixed chassis (1) is provided with a slideway (3), the lower part of the telescopic chassis (2) is provided with a pulley (5), the two are connected through the slideway (3), and the telescopic chassis (2) realizes outward telescopic motion of the fixed chassis (1) along the slideway (3) through the pulley (5);

the slide (3) on be provided with locking buckle (4), buckle (4) through locking and fix the flexible distance of scalable chassis (2).

3. The support device for preventing deformation of a stainless steel pitch propeller by heat treatment according to claim 2, wherein:

4 paddle edge-following support frame fixing rods (6) are uniformly distributed on the fixed chassis (1);

two ends of the upper part of the telescopic chassis (2) are respectively provided with a blade guide edge support frame fixing rod (7).

4. The support device for preventing the heat treatment deformation of the stainless steel distance propeller according to claim 1, wherein:

the fixed knot structure include: the propeller hub support frame (8), the universal shaft (9), the shaft bracket (10) and the folding shaft (11);

the propeller hub support frame (8) is of a telescopic structure, a plurality of bolt holes (13) for adjusting the length are formed in the propeller hub support frame, and butterfly bolts (14) are assembled to adjust the length of the propeller hub support frame (8) in a matching mode;

one end of the propeller hub supporting frame (8) is provided with a universal shaft (9), the universal shaft is arranged in the middle of the upper part of the telescopic chassis (2) through a shaft bracket (10) and is close to the inner arc position, the other end of the telescopic chassis is provided with a folding part through a folding shaft (11), the folding part is provided with a threaded hole (12) processed obliquely, and the threaded hole (12) is matched with a screw and connected with the propeller hub (26).

5. The support device for preventing the heat treatment deformation of the stainless steel distance propeller according to claim 1, wherein:

the support structure comprises: a guide edge support frame (15), a connecting structure and a clamping structure;

the guide trailing edge support frame (15) is of a telescopic structure, a plurality of bolt holes (13) for adjusting the length are formed in the guide trailing edge support frame, and butterfly bolts (14) are assembled to adjust the length of the guide trailing edge support frame (15) in a matching mode;

one end of the guide trailing edge support frame (15) is provided with a connecting structure used for being connected with a blade trailing edge support frame fixing rod (6) or a blade guide trailing edge support frame fixing rod (7);

the other end of the guide trailing edge support frame (15) is provided with a clamping structure used for being connected with the propeller blades (21).

6. The support device for preventing the heat treatment deformation of the stainless steel distance propeller according to claim 5, wherein:

the connection structure comprises: an arched buckle (16), a clamping bolt (17) and a clamping nut (19);

the arched buckle (16) and the guide trailing edge support frame (15) are integrally processed, and the arched top of the arched buckle is connected with the guide trailing edge support frame (15);

two concentric through bolt holes (18) are respectively arranged at two corners of the arched buckle (16);

the clamping bolt (17) is arranged on the through bolt hole (18), and two ends of the clamping bolt are fixed through a clamping nut (19);

the arched buckle (16) is connected with the blade edge-following support frame fixing rod (6) or the blade edge-guiding support frame fixing rod (7) through a clamping bolt (17) and a clamping nut (19), and the position of the arched buckle can be adjusted along the blade edge-following support frame fixing rod (6) or the blade edge-guiding support frame fixing rod (7).

7. The support device for preventing the heat treatment deformation of the stainless steel distance propeller according to claim 5, wherein:

the clamping structure is as follows: an adjustable buckle (20), a suction surface bolt (24) and a pressure surface bolt (25);

the tail part of the adjustable buckle (20) is of a pin shaft head structure, and the front part of the adjustable buckle is of a V-shaped structure;

the adjustable buckle (20) is connected with a shaft head at the end part of the guide trailing edge support frame (15) through a pin shaft head matched with a pin shaft;

a suction surface bolt (24) and a pressure surface bolt (25) are respectively arranged on two sides of the V-shaped structure of the adjustable buckle (20);

the adjustable buckle (20) is clamped on the trailing edge (22) or the leading edge (23) and is fixed through a suction surface bolt (24) and a pressure surface bolt (25).

Technical Field

The invention discloses a supporting device for preventing a stainless steel fixed-distance propeller from heat treatment deformation, relates to the technical field of propeller manufacturing, and particularly relates to a heat treatment deformation control device for the stainless steel fixed-distance propeller.

Background

In recent 10 years, global warming causes the appearance of ice-free years in the summer of the north ice ocean, and the opening of the arctic air route opens up a new marine shipping channel, so that the marine cost can be greatly reduced, and the development of marine trade is promoted. However, the polar region water area is complex, the environment is severe, the water temperature is low, the ice layer is hard, even the ice mountain exists, and the polar region water area ship is surrounded by the ice layer in the process of sailing, so the propeller matched with the ship sailing in the water area is very important. In the action process of the ice propeller, the propeller is subjected to random mechanical load with six degrees of freedom and almost the same magnitude, the dynamic impact load causes the propeller to have higher strength and fatigue standard, and the stainless steel propeller gradually becomes the standard configuration of ships in polar water areas. However, although stainless steel materials, especially martensitic stainless steel, can meet the requirements of ship fittings in polar water areas in terms of strength and hardness, compared with other metal materials, the stainless steel materials have poor plasticity and toughness, and in addition, the propeller is of a cantilever structure with a complex curved surface shape and extremely high precision, the blade of the stainless steel material extends out of the hub, and complex deformation of a casting is easily caused particularly when heat treatment is carried out in a high-temperature environment, and if the control is not good, the stainless steel material is easily subjected to large deformation and cannot be repaired.

Because the fixed-pitch propeller blades are complex spiral curved surfaces, the difficulty of controlling the deformation of the blades is extremely high during heat treatment, and in order to prevent the stainless steel fixed-pitch propeller from deforming during high-temperature heat treatment, steel bars or tie bars are welded between every two blades for reinforcement in the currently adopted method, but the method has the following defects:

(1) the welding reinforcement paddle is adopted for heat treatment, before the heat treatment, a fixed steel bar or a tie bar needs to be welded between every two paddles, and materials, electric energy, welding rods and labor hour are consumed.

(2) The welding reinforcement paddle is adopted for heat treatment, after the heat treatment is finished, the fixed steel bars or the tie bars need to be cut off from the paddle, and electric energy, acetylene, labor hour and the like are consumed.

(3) The welding reinforcement paddle is adopted for heat treatment, and a cutter needs to be customized for cutting fixed steel bars or lacing wires due to high strength and hardness of stainless steel materials.

(4) The welding reinforcing paddle is adopted for heat treatment, after the heat treatment is finished, when a steel bar or a lacing wire is cut, local microstructure change on the surface of the stainless steel propeller is caused due to cutting of local high temperature, and the performance of the stainless steel propeller is further influenced.

(5) The welding reinforcing paddle is adopted for heat treatment, after the heat treatment is finished, if crack sources exist in the stainless steel propeller, the stainless steel propeller can crack when steel bars or lacing wires are cut, and the product quality is seriously influenced.

(6) The welding reinforcing paddle is adopted for heat treatment, after a steel bar is cut, butt welding points need to be polished, but the stainless steel gluing knife has the characteristics of high polishing linear speed, large cutting force, time and labor waste.

In view of the above problems in the prior art, it is necessary to develop a novel supporting device for preventing the stainless steel fixed-pitch propeller from deformation due to heat treatment, so as to overcome the problems in the prior art.

Disclosure of Invention

According to the technical problems of labor waste, material waste, time waste, influence on the performance of the propeller, cracking and the like in the prior art, the supporting device for preventing the stainless steel fixed-distance propeller from being deformed by heat treatment is provided. The invention mainly utilizes the supporting device to fix the propeller hub and the propeller blade, thereby preventing the propeller from deforming in the heat treatment process.

The technical means adopted by the invention are as follows:

a support device for preventing deformation of a stainless steel pitch propeller during heat treatment comprises: a chassis structure, a fixed structure and a support structure;

further, the chassis structure is a circular structure, and a fixing structure and a supporting structure are arranged at the upper part of the chassis structure;

furthermore, one end of the fixed structure is connected with the chassis structure, and the other end of the fixed structure is connected with a propeller hub of a propeller to be processed, which is placed on the fixed chassis, so that the fixed structure plays a role in fixing and positioning the propeller;

furthermore, one end of the supporting structure is connected with the chassis structure, and the other end of the supporting structure is connected with the propeller blades, so that the fixing and positioning effects on the propeller blades are achieved.

Further, the fixing structure comprises: a fixed chassis and a telescopic chassis;

furthermore, the fixed chassis is of a circular structure, and 4 telescopic chassis with sector structures are arranged on the outer side of the fixed chassis;

furthermore, the upper part of the fixed chassis is provided with a slideway, the lower part of the telescopic chassis is provided with a pulley, the fixed chassis and the telescopic chassis are connected through the slideway, and the telescopic chassis realizes outward telescopic motion of the fixed chassis along the slideway through the pulley;

furthermore, a locking buckle is arranged on the slide way, and the telescopic distance of the telescopic chassis is fixed through the locking buckle.

Furthermore, 4 blade trailing edge support frame fixing rods are uniformly distributed on the fixing chassis;

furthermore, two ends of the upper part of the telescopic chassis are respectively provided with a blade edge guide support frame fixing rod.

Further, the fixing structure includes: the propeller hub support frame, the universal shaft, the shaft bracket and the folding shaft are arranged on the propeller hub;

furthermore, the hub support frame is of a telescopic structure, a plurality of bolt holes for adjusting the length are arranged on the hub support frame, and butterfly bolts are assembled to adjust the length of the hub support frame in a matching manner;

furthermore, one end of the propeller hub support frame is provided with a universal shaft, the universal shaft is arranged in the middle of the upper part of the telescopic chassis close to the inner arc through a shaft bracket, the other end of the propeller hub support frame is provided with a folding part through a folding shaft, the folding part is provided with a threaded hole processed obliquely, and the threaded hole is matched with a screw to be connected with the propeller hub;

further, the support structure comprises: the guide edge support frame, the connecting structure and the clamping structure;

furthermore, the guide trailing edge support frame is of a telescopic structure, a plurality of bolt holes for adjusting the length are arranged on the guide trailing edge support frame, and butterfly bolts are assembled to adjust the length of the guide trailing edge support frame in a matching manner;

furthermore, one end of the guide trailing edge support frame is provided with a connecting structure used for being connected with the blade trailing edge support frame fixing rod or the blade guide trailing edge support frame fixing rod;

furthermore, the other end of the guide following edge support frame is provided with a clamping structure used for being connected with the propeller blades.

Further, the connection structure includes: the clamping device comprises an arched buckle, a clamping bolt and a clamping nut;

furthermore, the arched buckle and the guide following edge support frame are integrally processed, and the arched top of the arched buckle is connected with the guide following edge support frame;

furthermore, two concentric through bolt holes are respectively formed in two corners of the arched buckle;

furthermore, a clamping bolt is arranged on the through bolt hole, and two ends of the clamping bolt are fixed through a clamping nut;

furthermore, the arched buckle is connected with the blade edge-following support frame fixing rod or the blade edge-guiding support frame fixing rod through a clamping bolt and a clamping nut, and the position of the arched buckle can be adjusted along the blade edge-following support frame fixing rod or the blade edge-guiding support frame fixing rod.

Further, the clamping structure: the adjustable buckle, the suction surface bolt and the pressure surface bolt;

furthermore, the tail part of the adjustable buckle is a pin shaft head structure, and the front part of the adjustable buckle is a V-shaped structure;

furthermore, the adjustable buckle is connected with a shaft head at the end part of the guide edge supporting frame through a pin shaft head matched with a pin shaft;

furthermore, two sides of the V-shaped structure of the adjustable buckle are respectively provided with a suction surface bolt and a pressure surface bolt;

furthermore, the adjustable buckle is clamped on the trailing edge or the leading edge and fixed through the suction surface bolt and the pressure surface bolt.

The use mode of the invention is as follows:

A. the propellers are placed on the fixed chassis, the equally-divided telescopic chassis is stretched to a position slightly far away from the blade tips of the propeller blades along respective slideways by virtue of the pulleys according to the diameters of the propellers, and then the pulleys are fixed by the locking buckles;

B. the direction and the angle of the propeller hub support frames are adjusted through the rotation of the universal shaft fixed on the shaft bracket, so that one end of each propeller hub support frame with the threaded bolt hole faces the propeller hub of the propeller;

C. after the length of each propeller hub support frame is adjusted to a proper position, the length of each propeller hub support frame is fixed by butterfly bolts penetrating through bolt holes;

D. breaking the folding shaft to enable the position of each hub support frame with the threaded bolt hole to be tightly attached to the propeller hub, and locking the threaded nut to firmly fix each hub support frame on the propeller hub;

E. clamping the arched buckles of the guide trailing edge support frames on the blade trailing edge support frame fixing rods, penetrating clamping bolts into the through bolt holes, and locking the clamping bolts by clamping nuts to firmly fix the guide trailing edge support frames on the blade trailing edge support frame fixing rods;

F. adjusting the length of the guide trailing edge support frame according to the pitch position of the trailing edge of the propeller blade, and fixing the length of the guide trailing edge support frame by a butterfly bolt penetrating through a bolt hole;

G. adjusting the angle of the adjustable buckle to enable the adjustable buckle to be clamped at the position which is one third of the blade root of the propeller blade along with the edge distance, and locking a suction surface bolt and a pressure surface bolt on the adjustable buckle after the adjustable buckle is adjusted along with the shape to clamp the trailing edge of the propeller blade;

H. clamping the arched buckles of the guide-following side support frames on the fixing rods of the blade guide-following side support frames, penetrating clamping bolts into the through bolt holes, and locking the clamping bolts by using clamping nuts so that the guide-following side support frames are firmly fixed on the fixing rods of the blade following side support frames;

I. adjusting the length of the guide-following edge support frame according to the pitch position of the guide edge of the propeller blade, and fixing the length of the guide-following edge support frame by a butterfly bolt penetrating through a bolt hole;

J. adjusting the angle of the adjustable buckle to enable the adjustable buckle to be clamped at the position of the leading edge, which is one third away from the blade tip of the propeller blade, and locking a suction surface bolt and a pressure surface bolt on the adjustable buckle after adjusting the adjustable buckle according to the shape to clamp the leading edge of the propeller blade;

K. after the propeller hub and each propeller blade are fixed, the stainless steel fixed-distance propeller can be put into a heat treatment furnace for heat treatment.

Compared with the prior art, the invention has the following advantages:

1. according to the supporting device for preventing the stainless steel fixed-pitch propeller from deforming during heat treatment, due to the fact that the telescopic chassis is arranged, reverse deformation control of heat treatment of stainless steel fixed-pitch propellers with different diameters can be achieved;

2. according to the supporting device for preventing the stainless steel fixed-pitch propeller from deforming during heat treatment, the fixing rods of the blade-following supporting frames are arranged near the edges of the two sides of each equally-divided fixing chassis; blade guide edge supporting frame fixing rods are arranged near the edges of two sides of each equally-divided telescopic chassis, so that the method is applicable to heat treatment reversible deformation control of fixed-distance left-handed propellers or fixed-distance right-handed propellers;

3. the supporting device for preventing the stainless steel fixed-pitch propeller from deforming during heat treatment provided by the invention can save materials, electric energy, acetylene, welding rods and labor hour due to the adoption of a non-welding fixing mode;

4. according to the supporting device for preventing the stainless steel fixed-distance propeller from deforming during heat treatment, a non-welding fixing mode is adopted, a cutter is not required to be customized to cut and weld fixing materials, local high temperature of the stainless steel propeller cannot be caused, local microstructure change on the surface of the stainless steel propeller cannot be caused, and the performance of the stainless steel propeller is not influenced;

5. according to the supporting device for preventing the stainless steel fixed-distance propeller from deforming during heat treatment, due to the adoption of a non-welding fixing mode, the propeller cannot crack due to the existence of a crack source in the stainless steel propeller, and the product quality is not influenced;

6. the supporting device for preventing the heat treatment deformation of the stainless steel fixed-distance propeller provided by the invention adopts a non-welding fixing mode, does not need to polish the surface of the propeller, can ensure the surface precision of the stainless steel propeller, saves grinding materials, labor hour and the like.

7. The supporting device for preventing the stainless steel fixed-pitch propeller from deforming during heat treatment can be used for controlling the deformation of all complex curved surface castings of the revolving body during heat treatment, such as large-scale water turbine blades, large-scale fan blades, water pump impellers and the like; and can be used for heat treatment of any stainless steel material, such as martensitic stainless steel, austenitic stainless steel, duplex stainless steel, and ferritic stainless steel.

In conclusion, the technical scheme of the invention solves the problems of labor, material and time waste, and the accompanying influence on the performance of the propeller, cracking and the like in the prior art.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the chassis of the present invention;

FIG. 3 is a schematic view of the assembly of the fastening structure of the present invention;

FIG. 4 is a schematic view of the support structure assembly of the present invention;

FIG. 5 is a schematic view of the structure of the trailing edge support of the present invention.

In the figure: 1. the device comprises a fixed chassis 2, a telescopic chassis 3, a slide way 4, a locking buckle 5, a pulley 6, a blade trailing edge support frame fixing rod 7, a blade leading edge support frame fixing rod 8, a propeller hub support frame 9, a universal shaft 10, a shaft bracket 11, a folding shaft 12, a threaded hole 13, a bolt hole 14, a butterfly bolt 15, a leading edge support frame 16, an arched buckle 17, a clamping bolt 18, a through bolt hole 19, a clamping nut 20, an adjustable buckle 21, a propeller blade 22, a trailing edge 23, a leading edge 24, a suction surface bolt 25, a pressure surface bolt 26 and a propeller hub.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

As shown in the figure, the invention provides a supporting device for preventing the heat treatment deformation of a stainless steel fixed-pitch propeller, which comprises: a chassis structure, a fixed structure and a support structure; the chassis structure is a circular structure, and a fixing structure and a supporting structure are arranged at the upper part of the chassis structure; one end of the fixed structure is connected with the chassis structure, and the other end of the fixed structure is connected with a propeller hub 26 of a propeller to be processed, which is placed on the fixed chassis 1, and plays a role in fixing and positioning the propeller; one end of the supporting structure is connected with the chassis structure, and the other end of the supporting structure is connected with the propeller blades 21, so that the fixing and positioning effects on the propeller blades are achieved.

The fixing structure includes: a fixed chassis 1 and a telescopic chassis 2; the fixed chassis 1 is of a circular structure, and 4 telescopic chassis 2 of sector structures are arranged on the outer side of the fixed chassis; the upper part of the fixed chassis 1 is provided with a slideway 3, the lower part of the telescopic chassis 2 is provided with a pulley 5, the two are connected through the slideway 3, and the telescopic chassis 2 realizes outward telescopic movement of the fixed chassis 1 along the slideway 3 through the pulley 5; the slideway 3 is provided with a locking buckle 4, and the telescopic distance of the telescopic chassis 2 is fixed through the locking buckle 4.

4 blade trailing edge support frame fixing rods 6 are uniformly distributed on the fixing chassis 1; two ends of the upper part of the telescopic chassis 2 are respectively provided with a blade guide edge support frame fixing rod 7.

The fixing structure includes: a hub support frame 8, a universal shaft 9, a shaft bracket 10 and a folding shaft 11; the propeller hub support frame 8 is of a telescopic structure, a plurality of bolt holes 13 for adjusting the length are arranged on the propeller hub support frame, and butterfly bolts 14 are assembled to adjust the length of the propeller hub support frame 8 in a matching mode; one end of the propeller hub support frame 8 is provided with a universal shaft 9 which is arranged in the middle of the upper part of the telescopic chassis 2 near the inner arc position through a shaft bracket 10, the other end of the propeller hub support frame is provided with a folding part through a folding shaft 11, the folding part is provided with a threaded hole 12 processed obliquely, and the threaded hole 12 is matched with a screw to be connected with a propeller hub 26;

the support structure includes: a guide edge support frame 15, a connecting structure and a clamping structure; the leading edge support frame 15 is of a telescopic structure, a plurality of bolt holes 13 for adjusting the length are arranged on the leading edge support frame, and butterfly bolts 14 are assembled to adjust the length of the leading edge support frame 15 in a matching manner; one end of the leading edge support frame 15 is provided with a connecting structure for connecting with the blade leading edge support frame fixing rod 6 or the blade leading edge support frame fixing rod 7; the other end of the leading edge support frame 15 is provided with a clamping structure for connecting with the propeller blades 21.

The connection structure includes: an arched buckle 16, a clamping bolt 17 and a clamping nut 19; the arched buckle 16 and the guide following edge support frame 15 are integrally processed, and the arched top of the arched buckle is connected with the guide following edge support frame 15; two concentric through bolt holes 18 are respectively arranged at two corners of the arched buckle 16; the clamping bolt 17 is arranged on the through bolt hole 18, and two ends of the clamping bolt are fixed through clamping nuts 19; the arched buckle 16 is connected with the blade edge-following support frame fixing rod 6 or the blade edge-guiding support frame fixing rod 7 through a clamping bolt 17 and a clamping nut 19, and the position of the arched buckle can be adjusted along the blade edge-following support frame fixing rod 6 or the blade edge-guiding support frame fixing rod 7.

The clamping structure is as follows: adjustable buckle 20, suction surface bolt 24 and pressure surface bolt 25; the tail part of the adjustable buckle 20 is a pin shaft head structure, and the front part of the adjustable buckle is a V-shaped structure; the adjustable buckle 20 is connected with the shaft head at the end part of the guide trailing edge support frame 15 through a pin shaft head matched with a pin shaft; a suction surface bolt 24 and a pressure surface bolt 25 are respectively arranged on two sides of the V-shaped structure of the adjustable buckle 20; the adjustable buckle 20 is clamped on the trailing edge 22 or the leading edge 23 and is fixed by a suction surface bolt 24 and a pressure surface bolt 25.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.