Controllable-pitch propeller outer blade pitch transmission equal-ratio conversion device

Abstract

The utility model relates to a controllable-pitch propeller outer blade pitch transmission equal-proportion conversion device which comprises blades, a propeller hub, an oil pipe and an oil distributor, the propeller hub is connected with the blades and used for driving the blades to rotate, and the propeller hub is connected with the oil distributor through the oil pipe and used for achieving the purpose that the rotation angle of the blades in the propeller hub is equal to the rotation angle of a signal output shaft of the oil distributor. Therefore, the pitch angle of the blade is controlled in real time. The controllable-pitch propeller outer blade pitch equal-ratio device can accurately track angle positions of underwater blades under different working conditions (different pitch positions), and stable control over controllable-pitch propeller devices on the left side and the right side of a ship is achieved. By designing the controllable-pitch propeller outer blade pitch equal-ratio device, the health state of the controllable-pitch propeller device can be monitored in real time, and fault positions of a mechanical system, an electric control system and a hydraulic system are transmitted and locked through accurate pitch indication, so that the maintenance time is shortened.

Description

Technical Field

[0001] The utility model relates to a ship propulsion device, in particular to a pitch transmission proportional conversion device of the ship propulsion device. Background Art

[0002] Controllable pitch propellers are ship propulsion equipment that operate underwater. They have a wide range of pitch adjustment angles, withstand heavy loads, and are difficult to monitor. Controllable pitch propellers are distributed on the left and right sides of a ship, forming port and starboard. The blade rotation angle is subject to a certain proportional deviation through existing pitch transmission devices. This deviation can only be corrected through pitch control commands. Furthermore, existing devices require a four-bar linkage for amplification due to asynchronous pitch transmission, resulting in a complex and unreliable pitch transmission mechanism. Once the port and starboard pitch commands deviate, the port and starboard controllable pitch propellers will have different pitches. At the same speed, the ship's forward direction may deviate to a certain extent. Therefore, it is necessary to design a reliable, high-precision pitch proportional transmission device to monitor the pitch of underwater blades in real time and in a proportional manner, which is conducive to stable navigation of the ship. Summary of the Invention

[0003] In order to solve the problem of pitch signal deviation in pitch transmission command, realize the accurate monitoring function of the pitch of adjustable pitch propeller under different working conditions (different pitch positions), avoid the different pitch deviation control processing of the left and right adjustable pitch propeller devices, resulting in different speeds on the left and right sides and causing a certain deviation in the ship's sailing direction. The utility model proposes a proportional conversion device for the pitch transmission of the outer blade of the adjustable pitch propeller, which realizes the accurate monitoring of the pitch position of the blade during the pitch adjustment process of the adjustable pitch propeller. Since the pitch angle is an important factor affecting the speed, the pitch angle is accurately controlled to ensure high synchronization between the left and right sides, and ensure the consistency of the heading, speed and control command.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a proportional conversion device for the pitch transmission of the outer blades of a controllable pitch propeller, comprising a blade, a hub, an oil pipe and an oil distributor, wherein the hub is connected to the blade to drive the blade to rotate, and the hub is connected to the oil distributor through an oil pipe to achieve that the rotation angle of the blade in the hub is equal to the rotation angle of the signal output shaft of the oil distributor, thereby controlling the pitch angle of the blade in real time.

[0005] Furthermore, the hub is composed of a blade root bolt, a crank plate, a piston rod, a slider and a hub shell. The blades and the crank plate are fixedly connected by the blade root bolts, and the crank plate and the hub shell form a rotating pair.

[0006] Furthermore, the structure of the crank disk contains a crank pin, which forms a rotating pair with the slider; the slider is installed on the piston rod, forming a moving pair with the slider groove of the piston rod, the piston rod and the hub shell form a moving pair, and the oil pipe is fixedly connected to the piston rod.

[0007] Furthermore, the oil distributor is composed of a bushing, a movable shaft, a rotating shaft, a cam shaft, a signal output shaft, a rocker arm, a rocker arm and a housing; the oil pipe and the bushing are fixedly connected, the bushing and the movable shaft are connected by screws, the movable shaft and the rotating shaft are matched through the shaft hole to form a movable pair, the rotating shaft and the cam shaft are connected by a pin shaft to form a rotating pair, the cam shaft and the signal output shaft are connected by screws, the rocker arm and the bushing form a rotating pair, the rocker arm and the rocker arm form a rotating pair, and the rocker arm and the housing form a rotating pair.

[0008] Furthermore, the distance L1 between the crank pin on the crank plate and the rotation center is equal to the distance L2 between the rotation center of the cam and the rotating shaft in the oil distributor and the rotation center of the signal output shaft.

[0009] The beneficial effects of the utility model are:

[0010] The pitch proportional device of the outer blades of the controllable pitch propeller of the utility model can accurately track the angular position of the underwater blades under different working conditions (different pitch positions), thereby realizing smooth control of the controllable pitch propeller devices on both sides of the ship; by designing the pitch proportional device of the outer blades of the controllable pitch propeller, the health status of the controllable pitch propeller device can be monitored in real time, and the fault position of the mechanical system, electronic control system and hydraulic system can be locked through accurate pitch indication transmission, thereby reducing maintenance time. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 1. It is a schematic diagram of the hub component structure;

[0012] Figure 2 It is a schematic diagram of the oil distributor structure;

[0013] Figure 3 It is a schematic diagram of pitch proportional dimensions;

[0014] Figure 4 It is a schematic diagram of the motion relationship of the pitch proportional device. DETAILED DESCRIPTION

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] like Figures 1 to 4 As shown, a pitch transmission proportional conversion device for outer blades of a controllable pitch propeller of the present invention comprises four parts, namely a blade 1, a hub component, an oil pipe 5 and an oil distributor component.

[0017] Example 1:

[0018] like Figure 1As shown, the hub component is the main actuator for the controllable pitch propeller to move forward, backward and adjust the speed underwater. The hub component is composed of a blade root bolt 2, a crank disk 3, a piston rod 4, a slider 7 and a hub shell 6. The hub shell 6 is a carrier of each part in the hub component. The crank disk 3 and the piston rod 4 are connected to the hub shell 6. The crank disk 3 and the hub shell 6 form a rotating pair, and the piston rod 4 and the hub shell 6 form a moving pair; the blade 1 is a direct component that bears the hydrodynamic load. The blade 1 is combined with the upper plane of the crank disk 3 and is fixedly connected by the blade root bolt 2. The lower plane of the crank disk 3 contains a crank pin. The crank pin and the slider 7 are matched through the pin hole to form a rotating pair. The slider 7 is installed on the piston rod 4 and forms a moving pair with the slider groove of the piston rod 4.

[0019] Example 2:

[0020] The oil distributor is mainly a pitch signal output device and inputs and outputs hydraulic oil to the hub components and the oil pipe according to the oil circuit instructions. Figure 2 As shown, the oil distributor primarily consists of a bushing 8, a movable shaft 9, a rotating shaft 10, a cam 11, a signal output shaft 12, a rocker arm 13, a rocker arm 14, and a housing 15. The oil pipe 5 is fixedly connected to the bushing 8, the bushing 8 is screwed to the movable shaft 9, the movable shaft 9 and the rotating shaft 10 are mated through a shaft hole to form a movable pair, the rotating shaft 10 and the cam 11 are pinned to form a rotating pair, the cam 11 and the signal output shaft 12 are screwed, the rocker arm 13 and the bushing 8 form a rotating pair, the rocker arm 14 and the rocker arm 13 form a rotating pair, and the rocker arm 14 and the housing 15 form a rotating pair. When the pitch changes, the bushing 8 and rotating shaft 10 maintain linear movement, the movable shaft 9 extends, and the cam 11 and the signal output shaft 12 rotate angularly. The pitch angle is ultimately transmitted via the signal output shaft 12.

[0021] Example 3:

[0022] The crank plate 3 and the signal output shaft 12 are rotating components. The distance L1 between the crank pin on the lower plane of the crank plate 3 and the rotation center is equal to the distance L2 between the rotation center of the cam 11 and the rotating shaft 10 in the oil distributor and the rotation center of the signal output shaft 12. Figure 3 .

[0023] Example 4:

[0024] The main motion relationship of the pitch ratio device is: Figure 4After rotating, rotating, moving, moving, moving, rotating, and rotating, a proportional angle conversion is formed. The first rotation is formed by the blade 1 and the hub shell 6. The second rotation is formed by the crank pin on the crank disk 3 and the pin hole of the slider 7. The first movement is formed by the slider 7 and the piston rod 4. The second movement is formed by the piston rod 4 and the hub shell 6. Since the piston rod 4 is fixedly connected to the oil pipe 5 and the bushing 8, the second movement is also formed by the bushing 8 and the hub shell 6. The third movement is formed by the moving shaft 9 and the rotating shaft 10. The fourth rotation is formed by the rotating shaft 10 and the cam 11. The fifth rotation is formed by the signal output shaft 12 and the housing 15. The blade converts the rotation angle θ into a movement distance L1×sinθ. The movement distance is then converted into a rotation angle θ through the signal output shaft 12. That is, the blade rotation angle is equal to the signal output shaft rotation angle.

Claims

1. A device for converting the pitch of an outer blade of a controllable pitch propeller into a proportional ratio, characterized by: It includes blades, a hub, oil pipes and an oil distributor. The hub is connected to the blades to drive the blades to rotate. The hub is connected to the oil distributor through the oil pipe to ensure that the rotation angle of the blades in the hub is equal to the rotation angle of the signal output shaft of the oil distributor, thereby controlling the pitch angle of the blades in real time.

2. The device for transmitting and converting the pitch of the outer blades of a controllable pitch propeller according to claim 1, characterized in that: The hub consists of a blade root bolt, a crank plate, a piston rod, a slider and a hub shell. The blades and the crank plate are fixedly connected by the blade root bolts, and the crank plate and the hub shell form a rotating pair.

3. The device for transmitting and converting the pitch of the outer blades of a controllable pitch propeller according to claim 2, characterized in that: The structure of the crank plate contains a crank pin, which forms a rotating pair with the slider; the slider is installed on the piston rod, forming a moving pair with the slider groove of the piston rod, the piston rod and the hub shell form a moving pair, and the oil pipe is fixedly connected to the piston rod.

4. The device for transmitting and converting the pitch of the outer blades of a controllable pitch propeller according to claim 2, characterized in that: The oil distributor consists of a bushing, a movable shaft, a rotating shaft, a cam shaft, a signal output shaft, a rocker arm, a rocker arm and a housing; the oil pipe and the bushing are fixedly connected, the bushing and the movable shaft are connected by screws, the movable shaft and the rotating shaft are matched through the shaft hole to form a movable pair, the rotating shaft and the cam shaft are connected by a pin shaft to form a rotating pair, the cam shaft and the signal output shaft are connected by screws, the rocker arm and the bushing form a rotating pair, the rocker arm and the rocker arm form a rotating pair, and the rocker arm and the housing form a rotating pair.

5. The device for transmitting and converting the pitch of the outer blades of a controllable pitch propeller according to claim 4, characterized in that: The distance L1 between the crank pin on the crank plate and the rotation center is equal to the distance L2 between the rotation center of the cam and the rotating shaft in the oil distributor and the rotation center of the signal output shaft.

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