CN210027883U

CN210027883U - Propeller hub with adjustable propeller pitch

Info

Publication number: CN210027883U
Application number: CN201920771927.3U
Authority: CN
Inventors: 南雍; 潘新旗; 李海山
Original assignee: Anhui Thatcher Aviation Technology Co Ltd
Current assignee: Anhui Thatcher Aviation Technology Co Ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-02-07
Anticipated expiration: 2029-05-27

Abstract

The utility model discloses a propeller hub of adjustable pitch, slider slidable mounting are in the casing, and the slider is equipped with a plurality of first connecting portions, a plurality of first connecting portions are located the first plane, the first plane is perpendicular to slider slip direction, a plurality of first connecting portions set up along slider circumference interval, and a plurality of rotating parts rotate and install in the casing, and a plurality of rotating parts rotation axis are perpendicular to slider slip direction, and a plurality of rotating parts are located the second plane, the second plane is on a parallel with the first plane, and a plurality of rotating parts set up along slider circumference interval, and the rotating part is equipped with the second connecting portion, the second connecting portion are located rotating part rotation axis one side, the second connecting portion with first connecting portion cooperation is connected to make slider drive rotating part rotate; the utility model provides a propeller hub can realize the adjustment to the pitch in the condition of not dismantling any part to the life of propeller hub and paddle is favorable to improving in the cost reduction of adjustment pitch.

Description

Propeller hub with adjustable propeller pitch

Technical Field

The utility model relates to a screw technical field especially relates to a propeller hub of adjustable propeller pitch.

Background

At present, unmanned aerial vehicle, navigation aircraft are more and more, and corresponding screw kind also is increasing all the time, and wherein what see longest is the components of a whole that can function independently screw, accomplishes screw paddle and metal propeller hub during the use and flies, but at different altitude, different region environment, under operating conditions such as different operation requirements, need often change the screw pitch to satisfy the operation requirement of different operating modes.

At present, the majority of domestic market is ground adjustable distance oar, and the regulation pitch needs to be dismantled the back and reinstallated at every turn, and it is loaded down with trivial details to dismantle installation work to fasteners such as screw dismantle repeatedly and cause the damage easily, reduce product life. In addition, the constant-speed variable-pitch propeller has higher cost which is 15 to 20 times of that of the ground adjustable-pitch propeller, and the later maintenance cost is higher;

therefore, a new device is needed, the pitch adjustment is completed under the condition of no disassembly and assembly, the cost is equivalent to or slightly higher than that of the ground adjustable pitch propeller, and the market demand is met.

SUMMERY OF THE UTILITY MODEL

For the technical problem who exists among the solution background art, the utility model provides a propeller hub of adjustable pitch.

The utility model provides a propeller hub with adjustable propeller pitch, which comprises a shell, a sliding part and a plurality of rotating parts;

the sliding piece is arranged in the shell in a sliding mode, the sliding piece is provided with a plurality of first connecting portions, the first connecting portions are located in a first plane, the first plane is perpendicular to the sliding direction of the sliding piece, and the first connecting portions are arranged at intervals along the circumferential direction of the sliding piece;

the rotating parts are rotatably arranged in the shell, the rotating axes of the rotating parts are perpendicular to the sliding direction of the sliding part, the rotating parts are positioned in a second plane, the second plane is parallel to the first plane, and the rotating parts are arranged at intervals along the circumferential direction of the sliding part;

the rotating part is provided with a second connecting part, the second connecting part is positioned on one side of the rotating axis of the rotating part, and the second connecting part is connected with the first connecting part in a matching mode, so that the sliding part drives the rotating part to rotate.

Preferably, the first connecting portion is a sliding groove, the second connecting portion is a protrusion, and the protrusion is in sliding fit in the sliding groove.

Preferably, the first connecting portion is a protrusion, the second connecting portion is a sliding groove, and the protrusion is in sliding fit in the sliding groove.

Preferably, the device further comprises a sliding block, the sliding block is slidably mounted in the sliding groove, and the protrusion is rotatably connected with the sliding block.

Preferably, the connecting piece includes a first connecting rod and a second connecting rod, the first connecting rod is rotatably connected with the first connecting portion, the second connecting rod is rotatably connected with the first connecting rod, and the second connecting portion is rotatably connected with the second connecting rod.

Preferably, the sliding device further comprises a screw, the screw is rotatably mounted on the housing and is in fit connection with the sliding piece, and the screw is used for driving the sliding piece to slide.

In the utility model, the propeller hub with the adjustable propeller pitch drives the sliding part to slide through the external mechanism when the propeller pitch needs to be adjusted, and the sliding part drives the rotating parts to rotate when rotating because the first connecting parts and the second connecting parts are matched and connected, so that the rotating parts are connected with the propeller pitch, thereby realizing the adjustment of the propeller pitch; it is thus clear that the utility model provides a propeller hub can realize the adjustment to the pitch in the condition of not dismantling any part to the cost reduction of adjusting the pitch also is favorable to improving the life of propeller hub and paddle.

Drawings

Fig. 1 is a schematic structural view of a pitch-adjustable hub according to the present invention;

fig. 2 is an exploded schematic view of a pitch-adjustable hub according to the present invention.

Detailed Description

Fig. 1 is a schematic structural view of a pitch-adjustable hub according to the present invention, and fig. 2 is an exploded schematic view of a pitch-adjustable hub according to the present invention, as shown in fig. 1-2.

Referring to fig. 1-2, the present invention provides a propeller hub with adjustable pitch, which comprises a shell 1, a sliding member 2 and two rotating members 3; the rotor 3 is intended to be connected to the blades, so that the hub in this embodiment can be connected to two blades;

a moving groove is formed in the shell 1, the sliding part 2 is positioned in the shell 1 and matched with the moving groove, so that the sliding part 2 can slide in the shell 1, the sliding part 2 is provided with two first connecting parts, the two first connecting parts are positioned in a first plane, the first plane is perpendicular to the sliding direction of the sliding part 2, the two first connecting parts are arranged at intervals along the circumferential direction of the sliding part 2, and the two first connecting parts are arranged oppositely;

the two rotating pieces 3 are rotatably arranged in the shell 1 and extend to the outside of the shell 1, clamping grooves are formed in the parts, located outside the shell 1, of the two rotating pieces 3, blades are matched in the clamping grooves, the rotating axes of the two rotating pieces 3 are perpendicular to the sliding direction of the sliding piece 2, the rotating axes of the two rotating pieces 3 are collinear, and the two rotating pieces 3 are located on one side of the two first connecting portions respectively;

rotate piece 3 and be equipped with the second connecting portion, the second connecting portion are located and rotate 3 rotation axis one side, rotate through drive second connecting portion and can make and rotate piece 3 and rotate, the second connecting portion with first connecting portion cooperation is connected to make 2 drives of slider rotate piece 3 and rotate.

According to the propeller hub with the adjustable propeller pitch, when the propeller pitch needs to be adjusted, the sliding part 2 is driven to slide through the external mechanism, the two first connecting parts and the two second connecting parts are connected in a matched mode, the sliding part 2 drives the two rotating parts 3 to rotate when rotating, and the rotating parts 3 are used for being connected with the propeller pitch, so that the adjustment of the propeller pitch is achieved; it is thus clear that the utility model provides a propeller hub can realize the adjustment to the pitch in the condition of not dismantling any part to the cost reduction of adjusting the pitch also is favorable to improving the life of propeller hub and paddle.

In order to realize the sliding of the sliding member 2, the present embodiment further includes a screw rod 5, the screw rod 5 is rotatably mounted on the housing 1, the sliding member 2 is provided with a threaded hole therethrough, the screw rod 5 is fitted in the threaded hole, and the screw rod 5 extends to the outside of the housing 1, when the screw rod 5 rotates, the sliding member 2 moves, and a gear is fixed to a portion of the screw rod 5 located outside the housing 1.

Through the swing joint of first connecting portion and second connecting portion, realize converting the slip of slider 2 into the rotation of rotating piece 3, the structure of first connecting portion and second connecting portion can have multiple design, lists several design in this embodiment.

In the first design, refer to fig. 2, first connecting portion are spout 21, 2 moving direction of spout 21 length direction perpendicular to slider, the second connecting portion are protruding 31, protruding 31 sliding fit is in spout 21, protruding 31 can slide in spout 21, when the moving member removes, drive protruding 31 and remove, protruding 31 drives rotation piece 3 again and rotates, rotation piece 3 drives the paddle and rotates, thereby realize the adjustment of pitch, and two rotate 3 and rotate simultaneously, turned angle equals in real time, thereby two paddle turned angle equals.

In the second design mode, first connecting portion are protruding, second connecting portion are the spout, and spout length direction perpendicular to rotates the rotation axis of piece 3, protruding sliding fit in the spout, when the moving member removed, drive protruding synchronous motion, thereby the protruding slides in the spout and drives and rotate piece 3 and rotate, thereby it rotates to rotate piece 3 and drive the paddle, thereby realize the adjustment of pitch, and two rotate 3 and rotate simultaneously, turned angle equals in real time, thereby two paddle turned angles equal.

In order to make the protrusion 31 slide more smoothly in the sliding groove 21, the sliding device further comprises a sliding block 4, the sliding block 4 is slidably installed in the sliding groove 21, the sliding block 4 is provided with a circular hole, the protrusion 31 is cylindrical, the protrusion 31 is matched in the circular hole, the protrusion 31 rotates in the circular hole when the sliding part 2 moves, and the sliding block 4 slides in the sliding groove 21.

In the third kind of design, borrow from slider-crank 4 mechanism for reference, still include two connecting pieces, the connecting piece includes head rod and second connecting rod, the head rod with first connecting portion rotate to be connected, the second connecting rod with the head rod rotates to be connected, the second connecting portion with the second connecting rod rotates to be connected, and the moving member is slider 4 in the slider-crank 4 mechanism just so as to be equivalent to, rotates 3 pivot far away from slider 4 in the slider-crank 4 mechanism just as to, and when slider 2 slided, head rod and second connecting rod action drive and rotate 3 rotations to realize the adjustment of pitch.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A pitch-adjustable hub, characterized by comprising a shell (1), a sliding member (2) and a plurality of rotating members (3);

the sliding piece (2) is installed in the shell (1) in a sliding mode, the sliding piece (2) is provided with a plurality of first connecting portions, the first connecting portions are located in a first plane, the first plane is perpendicular to the sliding direction of the sliding piece (2), and the first connecting portions are arranged at intervals in the circumferential direction of the sliding piece (2);

the rotating parts (3) are rotatably arranged in the shell (1), the rotating axes of the rotating parts (3) are perpendicular to the sliding direction of the sliding part (2), the rotating parts (3) are positioned in a second plane, the second plane is parallel to the first plane, and the rotating parts (3) are arranged at intervals along the circumferential direction of the sliding part (2);

the rotating part (3) is provided with a second connecting part, the second connecting part is positioned on one side of the rotating axis of the rotating part (3), and the second connecting part is connected with the first connecting part in a matching manner, so that the rotating part (3) is driven by the sliding part (2) to rotate.

2. A pitch adjustable hub according to claim 1, wherein said first connection is a runner (21) and said second connection is a protrusion (31), the protrusion (31) being a sliding fit in the runner (21).

3. The pitch adjustable hub of claim 1 wherein said first connection is a protrusion and said second connection is a channel, said protrusion being a sliding fit in said channel.

4. A pitch-adjustable hub according to any one of claims 2 to 3, further comprising a slider (4), the slider (4) being slidably mounted in the slide slot (21), the protrusion (31) being rotatably connected to the slider (4).

5. The pitch adjustable hub of claim 1 further comprising a plurality of connectors, said connectors comprising a first connector rod and a second connector rod, said first connector rod being rotationally coupled to said first connector, said second connector rod being rotationally coupled to said first connector rod, said second connector rod being rotationally coupled to said second connector rod.

6. A pitch-adjustable hub according to claim 1, further comprising a screw (5), the screw (5) being rotatably mounted on the casing (1) and being in engagement with the slider (2), the screw (5) being adapted to drive the slider (2) in sliding movement.