Propeller variable pitch structure

Abstract

The utility model relates to the field of variable pitch structures, in particular to a propeller variable pitch structure. Comprising a connecting shell, a plurality of blades and a rotary variable-pitch assembly, the section of the connecting shell is circular, the blades are installed on the connecting shell through the rotary variable-pitch assembly, the rotary variable-pitch assembly is located on the inner wall of the connecting shell, and the rotary variable-pitch assembly comprises a plurality of connecting rods, a driving bevel gear and a plurality of driven bevel gears; the connecting rod is rotatably arranged on the inner wall of the connecting shell in a penetrating mode, one end of the connecting rod is fixedly connected with the driven bevel gear, two supporting plates are fixedly connected to the inner wall of the connecting shell, and rotating rods are rotatably connected to the sides, close to each other, of the two supporting plates. The propeller variable pitch structure provided by the utility model has the advantages that the plurality of blades in the propeller can be synchronously and automatically rotated, and the variable pitch operation is carried out by rotating the blades, so that the propeller can automatically adjust the angles of the blades according to navigation conditions, and the driving efficiency of the propeller is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a variable pitch structure field especially relates to a propeller variable pitch structure. BACKGROUND

[0002] The propeller variable pitch structure is a kind of structure that can adapt to different navigation working conditions by adjusting propeller blade angle.

[0003] The utility model discloses a propeller for ship, its technical scheme main points are as follows: including hub, the hub includes hub flange, is located the first stepped hole in the end surface of hub flange, the first stepped hole includes first key groove, is set up the second stepped hole in the first stepped hole, the second stepped hole includes second key groove, wherein the end surface of hub flange is set up annular limit slot, installs propeller, through the cooperation of flange shaft and hub flange fixed, the stepped shaft on flange shaft is matched with the first stepped hole, the second stepped hole respectively, and the fixation with propeller is strengthened by key connection, the annular limit slot of the hub flange is embedded in the end surface of sealing ring and flange shaft and abuts to reduce relative movement, improve torque transmission efficiency, and the hub flange is connected with the hub by reinforcing rib, and the service life of propeller is increased.

[0004] For the related content in the above, it is found that the following technical defects exist: the propeller in the prior art is fixed in the propeller blade structure during use, cannot rotate variable pitch, the fixed blade cannot quickly adjust the size and direction of thrust, and the practicability of the propeller is reduced.

[0005] Therefore, it is necessary to provide a new propeller variable pitch structure to solve the above technical problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving the shortcomings in the prior art and provides a propeller variable pitch structure.

[0007] The utility model provides a propeller variable -pitch structure to solve above -mentioned technical problem provides a propeller variable -pitch structure, include: connecting shell, a plurality of blades and rotation variable -pitch subassembly, the cross section of connecting shell is circular, the blade is installed on the connecting shell with the help of rotation variable -pitch subassembly, rotation variable -pitch subassembly is located the inner wall of connecting shell, rotation variable -pitch subassembly includes a plurality of connecting rods, driving bevel gear and a plurality of driven bevel gears, the connecting rod rotation is equipped in the inner wall of connecting shell, one end of connecting rod is fixedly connected with driven bevel gear, the inner wall of connecting shell is fixedly connected with two support plates, the side of two support plates close to each other is rotatably connected with the rotating lever, the driving bevel gear is fixed on the cambered surface of rotating lever, the driving bevel gear is engaged with driven bevel gear, one side of one support plate is fixedly connected with the welding plate, one side of welding plate is fixedly connected with servo motor, and one end of servo motor is fixedly connected with rotating lever.

[0008] The effect of the above components is that the rotation variable -pitch subassembly can synchronously and automatically rotate the plurality of blades in the propeller, and the pitch operation is performed by rotating the blades, so that the propeller can automatically adjust the blade angle according to the navigation condition, and the driving efficiency of the propeller is improved.

[0009] Preferably, the inner wall of the connecting shell is fixedly connected with a fixed plate, one side of the fixed plate is fixedly connected with a cylinder, and the output end of the cylinder is fixedly connected with a top block.

[0010] The effect of the above components is that the cylinder drives the top block to extrude the driving bevel gear, the driving bevel gear can be extruded and limited, and the driving bevel gear can be locked.

[0011] Preferably, one side of the driving bevel gear close to the top block is fixedly connected with a rubber ring, and one side of the rubber ring abuts against the top block.

[0012] The effect of the above components is that the rubber ring can improve the friction between the top block and the driving bevel gear, thereby improving the limiting effect of the top block on the driving bevel gear.

[0013] Preferably, the cambered surface of the connecting rod is attached with a sealing ring, and the sealing ring is fixedly connected with the outer wall of the connecting shell.

[0014] The effect of the above components is that the sealing ring can block the small gap between the connecting rod and the connecting shell, thereby improving the sealing property between the connecting shell and the connecting rod.

[0015] Preferably, the connecting rod is provided with a mounting assembly at the end away from the driven bevel gear, the mounting assembly comprises a mounting hole, the mounting hole is arranged at the end of the connecting rod away from the driven bevel gear, the outer wall of the connecting rod is threadedly provided with a screw rod, the inner wall of the mounting hole is attached with a fixing column, the end of the fixing column away from the connecting rod is fixedly connected with the blade, the arc surface of the fixing column is provided with a screw hole, and the screw hole is matched with the screw rod in size.

[0016] The effect achieved by the above component is that: through the mounting assembly, the worn blade can be conveniently replaced after use, and the whole propeller can be avoided from being scrapped due to local wear, thereby prolonging the overall service life of the propeller.

[0017] Preferably, the arc surface of the screw rod is fixedly connected with a plurality of rotating plates, and the rotating plates are uniformly distributed on the arc surface of the screw rod.

[0018] The effect achieved by the above component is that: rotating the rotating plate can drive the screw rod, and the effect that the screw rod can be conveniently controlled to rotate is achieved.

[0019] Preferably, the arc surface of the fixing column is fixedly connected with a plurality of positioning plates, the inner wall of the mounting hole is provided with a plurality of positioning holes, and the positioning plates are attached to the inner wall of the positioning holes.

[0020] The effect achieved by the above component is that: when the fixing column and the mounting hole are connected, the positioning plate fixed on the fixing column needs to be inserted into the inner wall of the positioning hole, so that the fixing column can be quickly positioned, and the screw rod and the screw hole can be quickly aligned.

[0021] Compared with the related art, the propeller variable pitch structure has the following beneficial effects:

[0022] Through the rotation variable pitch assembly, a plurality of blades in the propeller can be synchronously and automatically rotated, the pitch operation is performed by rotating the blades, the propeller can automatically adjust the blade angle according to the navigation condition, and the driving efficiency of the propeller is improved.

[0023] Through the mounting assembly, the worn blade can be conveniently replaced after use, and the whole propeller can be avoided from being scrapped due to local wear, thereby prolonging the overall service life of the propeller. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The structure of the propeller variable pitch structure is shown in the structure diagram of the propeller variable pitch structure.

[0025] Figure 2 The structure of the propeller variable pitch structure is shown in the structure diagram of the propeller variable pitch structure. Figure 1The structure schematic diagram of the left side shown;

[0026] Figure 3 For Figure 2 The structure schematic diagram of the rotating pitch changing assembly shown;

[0027] Figure 4 For Figure 3 The partial structure schematic diagram of the rotating pitch changing assembly shown;

[0028] Figure 5 For Figure 1 The structure schematic diagram of the mounting assembly shown;

[0029] Figure 6 For Figure 5 The partial structure exploded schematic diagram of the mounting assembly shown.

[0030] Reference signs in the drawings: 1, connecting shell; 2, paddle; 3, rotating pitch changing assembly; 301, connecting rod; 302, driven bevel gear; 303, support plate; 304, rotating rod; 305, driving bevel gear; 306, welding plate; 307, servo motor; 308, fixed plate; 309, air cylinder; 310, top block; 311, rubber ring; 312, sealing ring; 4, mounting assembly; 41, mounting hole; 42, screw rod; 43, fixed column; 44, screw hole; 45, positioning plate; 46, positioning hole; 47, rotating plate. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0032] The specific implementation of the utility model will be described in detail in combination with specific examples.

[0033] Please refer to Figure 1 and Figure 2 The utility model embodiment provides a propeller pitch changing structure, which comprises a connecting shell 1, a plurality of paddles 2 and a rotating pitch changing assembly 3, the cross section of the connecting shell 1 is circular, and the paddles 2 are installed on the connecting shell 1 by means of the rotating pitch changing assembly 3.

[0034] Among them, the rotating pitch changing assembly 3 is located on the inner wall of the connecting shell 1, and the connecting rod 301 is provided with a mounting assembly 4 away from the driven bevel gear 302.

[0035] In the embodiment of the utility model, please refer to Figure 3 and Figure 4The rotating distance changing assembly 3 comprises a plurality of connecting rods 301, a driving bevel gear 305 and a plurality of driven bevel gears 302, the connecting rod 301 is rotatably arranged in the inner wall of the connecting shell 1, one end of the connecting rod 301 is fixedly connected with the driven bevel gear 302, the inner wall of the connecting shell 1 is fixedly connected with two supporting plates 303, the two supporting plates 303 are rotatably connected with a rotating rod 304 on the side close to each other, the driving bevel gear 305 is fixed on the arc surface of the rotating rod 304, the driving bevel gear 305 is engaged with the driven bevel gear 302, one side of one of the supporting plates 303 is fixedly connected with a welding plate 306, one side of the welding plate 306 is fixedly connected with a servo motor 307, and the servo motor 307 is fixedly connected with one end of the rotating rod 304. By arranging the rotating distance changing assembly 3, a plurality of blades 2 in the propeller can be rotated synchronously and automatically, the distance changing operation is performed by rotating the blades 2, so that the propeller can automatically adjust the angle of the blades 2 according to the navigation condition, the driving efficiency of the propeller is improved, the inner wall of the connecting shell 1 is fixedly connected with a fixed plate 308, one side of the fixed plate 308 is fixedly connected with an air cylinder 309, and the output end of the air cylinder 309 is fixedly connected with a top block 310. The air cylinder 309 drives the top block 310 to extrude the driving bevel gear 305, the driving bevel gear 305 can be extruded and limited, so that the driving bevel gear 305 can be locked, one side of the driving bevel gear 305 close to the top block 310 is fixedly connected with a rubber ring 311, and one side of the rubber ring 311 abuts against the top block 310. The rubber ring 311 can improve the friction between the top block 310 and the driving bevel gear 305, thereby improving the limiting effect of the top block 310 on the driving bevel gear 305, the arc surface of the connecting rod 301 is attached with a sealing ring 312, and the sealing ring 312 is fixedly connected with the outer wall of the connecting shell 1. The sealing ring 312 can block the small gap between the connecting rod 301 and the connecting shell 1, thereby improving the sealing property between the connecting shell 1 and the connecting rod 301;

[0036] In the embodiment of the utility model, please refer to Figure 5 And Figure 6The mounting assembly 4 comprises a mounting hole 41, which is arranged at one end of the connecting rod 301 away from the driven bevel gear 302, a screw rod 42 is screwed on the outer wall of the connecting rod 301, a fixed column 43 is attached to the inner wall of the mounting hole 41, one end of the fixed column 43 away from the connecting rod 301 is fixedly connected with the paddle 2, and the arc surface of the fixed column 43 is provided with a screw hole 44, which is matched with the screw rod 42 in size. By arranging the mounting assembly 4, the worn paddle 2 can be conveniently replaced after use, and the overall service life of the propeller can be prolonged by replacing the worn paddle 2 to avoid the entire propeller being scrapped due to local wear. The arc surface of the screw rod 42 is fixedly connected with a plurality of rotating plates 47, and the rotating plates 47 are uniformly distributed on the arc surface of the screw rod 42. Rotating the rotating plate 47 can drive the screw rod 42, achieving the effect of conveniently controlling the rotation of the screw rod 42. The arc surface of the fixed column 43 is fixedly connected with a plurality of positioning plates 45, and the inner wall of the mounting hole 41 is provided with a plurality of positioning holes 46. The positioning plate 45 is attached to the inner wall of the positioning hole 46. When the fixed column 43 and the mounting hole 41 are connected, the positioning plate 45 fixed on the fixed column 43 is inserted into the inner wall of the positioning hole 46, so that the fixed column 43 can be quickly positioned, and the screw rod 42 and the screw hole 44 can be quickly aligned;

[0037] The working principle of the propeller variable pitch structure is as follows: when it is necessary to rotate the paddle 2 of the propeller for variable pitch operation, the servo motor 307 is started to drive the rotating rod 304 to rotate along the two supporting plates 303, the rotating rod 304 drives the driving bevel gear 305, the driving bevel gear 305 simultaneously drives a plurality of driven bevel gears 302 to rotate, the driven bevel gears 302 drive the connecting rod 301 to rotate, and the connecting rod 301 drives the paddle 2 to rotate. When the paddle 2 is rotated to a suitable angle, the operation of the servo motor 307 is stopped. The cylinder 309 drives the top block 310 to press the driving bevel gear 305, the driving bevel gear 305 is pressed and limited in position, so that the driving bevel gear 305 is locked. In addition, the rubber ring 311 can improve the friction between the top block 310 and the driving bevel gear 305, thereby improving the limiting effect of the top block 310 on the driving bevel gear 305. Finally, the sealing ring 312 can block the small gap between the connecting rod 301 and the connecting shell 1, thereby improving the sealing property between the connecting shell 1 and the connecting rod 301.

[0038] When the paddle 2 needs to be replaced after being worn, the rotating plate 47 is rotated to drive the screw rod 42 to rotate, so that the screw rod 42 is separated from the screw hole 44 on the fixed column 43; when the screw rod 42 is separated from the screw hole 44, the paddle 2 is moved to drive the fixed column 43, so that the fixed column 43 is separated from the mounting hole 41; at this time, the dismounting of the paddle 2 is completed; when a new paddle 2 needs to be installed, the paddle 2 is moved to drive the fixed column 43, so that the fixed column 43 is inserted into the mounting hole 41; when the fixed column 43 is connected with the mounting hole 41, the positioning plate 45 fixed on the fixed column 43 is inserted into the inner wall of the positioning hole 46, so that the fixed column 43 can be quickly positioned, the screw rod 42 can be quickly aligned with the screw hole 44; when the screw rod 42 is aligned with the screw hole 44, the rotating plate 47 is rotated to drive the screw rod 42 to rotate, so that the screw rod 42 is connected with the screw hole 44; and the replacement work of the paddle 2 is completed.

[0039] The circuit and the control involved in the utility model are prior art, and too much description is not given herein.

[0040] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and equivalent structures or equivalent process transformations using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields are also included in the patent protection range of the utility model.

Claims

1. A propeller variable pitch structure, characterized by, Include: Connecting shell (1), several oars (2) and rotating variable pitch assembly (3), the cross section of connecting shell (1) is circular, the oar (2) is installed on the connecting shell (1) by rotating variable pitch assembly (3), the rotating variable pitch assembly (3) is located in the inner wall of connecting shell (1), the rotating variable pitch assembly (3) includes several connecting rods (301), driving bevel gear (305) and several driven bevel gears (302), the connecting rod (301) is rotatably provided in the inner wall of connecting shell (1), one end of the connecting rod (301) is fixedly connected with the driven bevel gear (302), the inner wall of the connecting shell (1) is fixedly connected with two support plates (303), the side of the two support plates (303) close to each other is rotatably connected with a rotating rod (304), the driving bevel gear (305) is fixed on the arc surface of the rotating rod (304), the driving bevel gear (305) is engaged with the driven bevel gear (302), one side of one of the support plates (303) is fixedly connected with a welding plate (306), one side of the welding plate (306) is fixedly connected with a servo motor (307), the servo motor (307) is fixedly connected with one end of the rotating rod (304).

2. A propeller variable pitch structure according to claim 1, wherein The inner wall of the connecting shell (1) is fixedly connected with a fixed plate (308), one side of the fixed plate (308) is fixedly connected with a gas cylinder (309), the output end of the gas cylinder (309) is fixedly connected with a top block (310).

3. The variable pitch propeller structure of claim 1, wherein The side of the driving bevel gear (305) close to the top block (310) is fixedly connected with a rubber ring (311), one side of the rubber ring (311) abuts against the top block (310).

4. The variable pitch propeller structure of claim 1, wherein The arc surface of the connecting rod (301) is attached with a sealing ring (312), the sealing ring (312) is fixedly connected with the outer wall of the connecting shell (1).

5. The variable pitch propeller structure of claim 1, wherein The end of the connecting rod (301) away from the driven bevel gear (302) is provided with a mounting assembly (4), the mounting assembly (4) includes a mounting hole (41), the mounting hole (41) is formed in the end of the connecting rod (301) away from the driven bevel gear (302), the outer wall of the connecting rod (301) is threadedly provided with a screw rod (42), the inner wall of the mounting hole (41) is attached with a fixed column (43), one end of the fixed column (43) away from the connecting rod (301) is fixedly connected with the oar (2), the arc surface of the fixed column (43) is provided with a screw hole (44), the screw hole (44) is matched with the size of the screw rod (42).

6. A propeller pitch varying structure according to claim 5, wherein The arc surface of the screw rod (42) is fixedly connected with a plurality of rotating plates (47), the rotating plates (47) are uniformly distributed on the arc surface of the screw rod (42).

7. A propeller pitch varying structure according to claim 5, wherein The arc surface of the fixed column (43) is fixedly connected with a plurality of positioning plates (45), a plurality of positioning holes (46) are formed in the inner wall of the mounting hole (41), the positioning plates (45) are attached with the inner wall of the positioning holes (46).

Images