Propeller hub body structure of propeller with adjustable pitch

Abstract

The utility model discloses a propeller hub body structure of an adjustable pitch propeller, which comprises a propeller hub body, an inner connecting body is fixedly arranged in the propeller hub body, a connecting shaft I is rotatably connected in the inner connecting body, one end of the connecting shaft I is fixedly connected with a gear I, the outside of the gear I is meshed and connected with a gear II, and the gear II is meshed and connected with the inner connecting body. And a second connecting shaft is fixedly connected to the side surface of the second gear, a first inner sealing block is rotationally connected to the end, away from the second gear, of the second connecting shaft, the outer portion of the first inner sealing block is fixedly connected with the propeller hub body, and a rocker arm is fixedly connected to the outer portion of the inner connecting body. By means of the structure, the angle of the inner connecting body is adjusted, the position of the rocker arm can be changed, the first gear is matched with the second gear, the second gear is driven by the second connecting shaft, the first gear drives the first connecting shaft to rotate, therefore, the angles of the multiple paddles are adjusted, and resistance generated by rotation can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of propellers, in particular to a hub structure of an adjustable pitch propeller. Background Art

[0002] The hub structure of the adjustable pitch propeller uses the operating mechanism inside the hub to rotate the blades, thereby changing the pitch angle of the blades. The main function of the hub structure of the adjustable pitch propeller is to connect and support the blades and realize the pitch adjustment of the blades through the hydraulic system. The hub structure includes a hub body, a propeller shaft, and a variable pitch cylinder assembly. The rotation of the blades is driven by a hydraulic system, thereby changing the pitch angle and realizing thrust adjustment and directional control of the propeller. For example, a Chinese patent discloses a connection structure between the front and rear propeller hubs of a counter-rotating propeller, and its application number is: CN201610005267.9. The hub drives the front propeller blades and the front propeller cap to rotate. The front propeller blades generate thrust and push the rotating wake backward at the same time. The flow near the front propeller hub fits the front propeller cap and flows to the rear propeller hub. The rear propeller blades rotate to recover the rotating wake of the front propeller, thereby recovering energy, but the angle of the blades cannot be adjusted, and a certain amount of friction will be generated during rotation, which will generate a certain amount of heat and have a certain impact on the internal structure. An oil tank needs to be set to reduce the friction generated when the components move, so as to reduce the loss generated by the device during use and facilitate long-term use. Utility Model Content

[0003] The purpose of the present utility model is to solve at least one of the technical problems existing in the prior art, and to provide a hub body structure of an adjustable pitch propeller. By adjusting the angle of the inscribed body, the position of the rocker arm can be changed. Through the mutual cooperation of gear one and gear two, gear two is driven by connecting shaft two, so that gear one drives connecting shaft one to rotate, thereby adjusting the angles of multiple blades, which can effectively reduce the resistance generated by rotation.

[0004] The present invention also provides a hub structure with the above-mentioned adjustable pitch propeller, comprising: a hub body, an internal body fixedly installed inside the hub body, the internal rotatably connected to a connecting shaft 1, one end of the connecting shaft 1 fixedly connected to a gear 1, the external meshing connection of the gear 1 is connected to a gear 2, the side surface of the gear 2 is fixedly connected to a connecting shaft 2, the end of the connecting shaft 2 away from the gear 2 is rotatably connected to a first inner sealing block, the outside of the first inner sealing block is fixedly connected to the hub body, the outside of the internal body is fixedly connected to a rocker arm, and the external hub body of the rocker arm is slidably connected. By adjusting the angle of the internal body through the above components, the position of the rocker arm can be changed, and by the mutual cooperation of gear 1 and gear 2, the gear 2 is driven by the connecting shaft 2, so that the gear 1 drives the connecting shaft 1 to rotate, thereby adjusting the angles of multiple blades, which can effectively reduce the resistance generated by the rotation.

[0005] According to the propeller hub structure of an adjustable pitch propeller described in the present invention, the end of the connecting shaft (1) remote from the gear (1) extends through the interior of the inscribed body, and the inscribed body and the connecting shaft (1) are tightly connected. With these components, the propeller blades are fixed to the connecting shaft (1) via the mounting portion, and the gear (1) drives the connecting shaft (1) to adjust the propeller blade angle.

[0006] According to the propeller hub structure of an adjustable pitch propeller of the present invention, a second inner seal block is fixedly connected to the interior of the propeller hub, and a flange is fixedly mounted at the connection between the second inner seal block and the propeller hub. With these components, the second inner seal block can seal the interior of the propeller hub, preventing internal lubricating oil leakage and causing a certain degree of contamination.

[0007] According to the propeller hub structure of an adjustable pitch propeller described in the present invention, a first oil groove is provided at the connection between the first inner seal block and the second connecting shaft, and a second oil groove is provided at the connection between the second inner seal block and the second connecting shaft. Through these components, lubricating oil can penetrate the exterior of the second connecting shaft through the first oil groove, effectively reducing friction damage caused by rotation.

[0008] According to the propeller hub structure of an adjustable pitch propeller of the present invention, an oil storage chamber is provided between the first inner seal block and the second inner seal block, and an oil injection hole is provided at the outlet of the oil storage chamber. With these components, lubricating oil is injected through the oil injection hole and stored within the oil storage chamber.

[0009] According to the propeller hub structure of an adjustable pitch propeller of the present invention, a sealing ring is fixedly connected to the connection between the connecting shaft 2 and the propeller hub, and the sealing ring is located to the side of the gear 2. Through the above components, the connection between the connecting shaft and the propeller hub is tightly reinforced by the sealing ring to prevent external liquid from entering the interior.

[0010] According to the propeller hub structure of an adjustable pitch propeller described in the present invention, there are multiple gears 1 distributed symmetrically about the axis, the exteriors of the multiple gears 1 have the same structure, and the exterior of the internal body is provided with a mounting portion. Through these components, the gears 1 drive the connecting shaft 1 to rotate, and the mounting portion connects and secures the blades.

[0011] According to the propeller hub structure of an adjustable pitch propeller described in the utility model, an isolation cavity is provided inside the propeller hub, and an elastic member is provided inside the isolation cavity. Through these components, the elastic member is fixed through the isolation cavity, and the elastic member plays a buffering and shock-absorbing role, providing the necessary elastic support.

[0012] Beneficial effect: Compared with the existing technology, the hub body structure of this new adjustable pitch propeller can change the position of the rocker arm by adjusting the angle of the inscribed body. Through the mutual cooperation of gear one and gear two, gear two is driven by connecting shaft two, so that gear one drives connecting shaft one to rotate, thereby adjusting the angles of multiple blades, which can effectively reduce the resistance generated by rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0014] Figure 1 This is a complete structural diagram of the propeller hub structure of the adjustable pitch propeller of the utility model;

[0015] Figure 2 This is a diagram showing the internal structure of the hub structure of the adjustable pitch propeller of the utility model;

[0016] Figure 3 This is a structural diagram of the adjustment mechanism of the propeller hub structure of the adjustable pitch propeller of the utility model;

[0017] Figure 4 The hub structure of the adjustable pitch propeller of the utility model Figure 2 Local structure diagram at point A in the middle.

[0018] Legend:

[0019] 1. Hub body; 2. Internal body; 3. Connecting shaft 1; 4. Gear 1; 5. Gear 2; 6. First inner seal block; 7. Connecting shaft 2; 8. Second inner seal block; 9. Flange; 10. Oil tank 1; 11. Oil tank 2; 12. Oil storage chamber; 13. Oil filling hole; 14. Sealing ring; 15. Mounting part; 16. Elastic part; 17. Rocker arm; 18. Isolation chamber. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0021] Reference Figure 1-4, an embodiment of the present invention provides a hub structure of an adjustable pitch propeller, which includes: a hub body 1, an internal body 2 is fixedly installed inside the hub body 1, providing rotational support for a connecting shaft 3, the internal rotation of the internal body 2 is connected to a connecting shaft 3, one end of the connecting shaft 3 is fixedly connected to a gear 4, driving the connecting shaft 3 and the gear 2 5 to rotate, the outside of the gear 4 is meshed with a gear 2 5, driving the connecting shaft 2 7 to rotate, the side surface of the gear 2 5 is fixedly connected to the connecting shaft 2 7, the end of the connecting shaft 2 7 away from the gear 2 5 is rotatably connected to a first inner seal block 6, the interior is sealed to prevent leakage of lubricating oil, the outside of the first inner seal block 6 is fixedly connected to the hub body 1, the outside of the internal body 2 is fixedly connected to a rocker arm 17, and the outside of the rocker arm 17 is slidably connected to the hub body 1.

[0022] The end of the connecting shaft 3 away from the gear 4 passes through the interior of the internal body 2, and the internal body 2 and the connecting shaft 3 are tightly connected. There are multiple gears 4 and they are distributed symmetrically about the axis. The exteriors of the multiple gears 4 have the same structure. The exterior of the internal body 2 is provided with a mounting portion 15 for installing the blade components.

[0023] The inside of the hub body 1 is fixedly connected to a second inner seal block 8, which seals and guides the lubricating oil. A flange 9 is fixedly installed at the connection between the second inner seal block 8 and the hub body 1, which is a fixing component. An oil groove 10 is provided at the connection between the first inner seal block 6 and the connecting shaft 2 7, which is a channel for the flow of lubricating oil. An oil groove 2 11 is provided at the connection between the second inner seal block 8 and the connecting shaft 2 7. An oil storage chamber 12 is provided between the first inner seal block 6 and the second inner seal block 8 to store the lubricating oil, and an oil filling hole 13 is provided at the outlet of the oil storage chamber 12.

[0024] A sealing ring 14 is fixedly connected to the connection between the connecting shaft 2 7 and the hub body 1, which has a sealing function to prevent external liquid from entering the interior of the device. The sealing ring 14 is located on the side of the gear 2 5. An isolation chamber 18 is provided inside the hub body 1, and an elastic member 16 is provided inside the isolation chamber 18, which has the function of shock absorption and providing elastic support.

[0025] Working principle: First, remove the sealing plug of the oil filling hole 13 and inject the lubricating oil into the oil filling hole 13. The lubricating oil is stored in the oil storage chamber 12 and flows through the oil tank 10 and the oil tank 2 11, so that the outside of the connecting shaft 2 7 is soaked with the lubricating oil. The connecting shaft 2 7 drives the gear 2 5 to rotate the gear 1 4, and the gear 1 4 drives the connecting shaft 3 to rotate the blades, thereby adjusting the angles of multiple blades. By adjusting the angle of the internal body 2, the position of the rocker arm 17 can be changed, so that the rocker arm 17 and the blades can be used in conjunction with each other, which can effectively reduce the resistance generated by the rotation.

[0026] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A hub structure of an adjustable pitch propeller, characterized in that: include: A hub body (1) is provided, wherein an internal body (2) is fixedly installed inside the hub body (1), the internal body (2) is rotatably connected to a connecting shaft (3), one end of the connecting shaft (3) is fixedly connected to a gear (4), the outside of the gear (4) is meshedly connected to a gear (5), the side surface of the gear (5) is fixedly connected to a connecting shaft (7), the end of the connecting shaft (7) away from the gear (5) is rotatably connected to a first inner sealing block (6), the outside of the first inner sealing block (6) is fixedly connected to the hub body (1), the outside of the internal body (2) is fixedly connected to a rocker arm (17), and the outside of the rocker arm (17) is slidably connected to the hub body (1).

2. The hub structure of an adjustable pitch propeller according to claim 1, characterized in that: The end of the connecting shaft 1 (3) away from the gear 1 (4) passes through the interior of the internal body (2), and the internal body (2) and the connecting shaft 1 (3) are tightly connected.

3. The hub structure of an adjustable pitch propeller according to claim 1, characterized in that: A second inner sealing block (8) is fixedly connected to the interior of the propeller hub body (1), and a flange (9) is fixedly installed at the connection between the second inner sealing block (8) and the propeller hub body (1).

4. The hub structure of an adjustable pitch propeller according to claim 3, characterized in that: An oil groove 1 (10) is provided at the connection between the first inner sealing block (6) and the second connecting shaft (7), and an oil groove 2 (11) is provided at the connection between the second inner sealing block (8) and the second connecting shaft (7).

5. The hub structure of an adjustable pitch propeller according to claim 1, characterized in that: An oil storage cavity (12) is provided between the first inner sealing block (6) and the second inner sealing block (8), and an oil filling hole (13) is provided at the outlet of the oil storage cavity (12).

6. The hub structure of an adjustable pitch propeller according to claim 1, characterized in that: A sealing ring (14) is fixedly connected to the connection point between the second connecting shaft (7) and the hub body (1), and the sealing ring (14) is located on the side of the second gear (5).

7. The hub structure of an adjustable pitch propeller according to claim 1, characterized in that: There are multiple gears (4) and they are distributed symmetrically along an axis. The exteriors of the multiple gears (4) have the same structure. The exterior of the internal body (2) is provided with a mounting portion (15).

8. The hub structure of an adjustable pitch propeller according to claim 1, characterized in that: An isolation cavity (18) is provided inside the hub body (1), and an elastic member (16) is provided inside the isolation cavity (18).

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