CN109720516B

CN109720516B - Large-angle high-rotation-speed rotating mechanism

Info

Publication number: CN109720516B
Application number: CN201910001732.5A
Authority: CN
Inventors: 邓启亮; 杨万富; 杨春云; 何彩繁; 蒋衡捷
Original assignee: Shanghai Hunter Marine Equipment Co ltd
Current assignee: Shanghai Hunter Marine Equipment Co ltd
Priority date: 2019-01-02
Filing date: 2019-01-02
Publication date: 2020-10-20
Anticipated expiration: 2039-01-02
Also published as: CN109720516A

Abstract

The invention relates to a large-angle high-rotation-speed rotating mechanism, which is provided with a fin handle with an inner gear ring and a fin shaft for driving fins to rotate, wherein the fin shaft is provided with an outer gear ring, and the fin handle and the fin shaft are in meshing transmission connection through a plurality of rotating bodies with the outer gear rings; the rotor passes through the fixed pin to be connected on non-extendible stabilizer's bearing, and the rotor can be around fixed pin central motion, drives the fin axle by the fin handle through the rotor and rotates around the center to realize the rotation of big angle of fin, high rotational speed. The invention has simple and compact structure, the load is distributed on a plurality of teeth, the strength is high, and the bearing capacity is stronger; the rotation angle of the fin can reach +/-90 degrees by changing the transmission ratio; by changing the transmission ratio, the fin rotating angular speed of the current actuating mechanism is 2-3 times that of the current actuating mechanism; all gears are meshed with each other all the time, and sliding gears are not needed during gear shifting, so that the friction and the wear are small, and the service life is long.

Description

Large-angle high-rotation-speed rotating mechanism

Technical Field

The invention relates to equipment for reducing rolling motion of a boat, in particular to a zero-speed fin stabilizer.

Background

The existing non-retractable fin stabilizer device adopts a fin handle to rigidly connect a linear hydraulic cylinder and a rotating shaft, and the fin handle and a fin shaft are fixedly connected into a whole through a double key. The piston rod of the fin rotating oil cylinder is hinged with the piston rod of the fin rotating oil cylinder through a fin handle pin. The fin rotating oil cylinders are supported on the supporting seat through the oil cylinder hinge shaft and the joint bearing, when the hinge connection fin rotating is formed, oil is respectively fed into the rod cavities and the rodless cavities of the left fin rotating oil cylinder and the right fin rotating oil cylinder, the thrust and the pull are respectively generated, the fin handles are pushed and pulled one by one to form a couple, and therefore the fin shaft is driven to rotate, and the fin rotating function is achieved. The speed and direction of the rotary fin are determined by the flow rate of the hydraulic unit and the flow direction of oil, but the maximum rotary fin working angle which can be achieved by adopting a crank connecting rod driving structure for the actuating mechanisms is only +/-40 degrees.

Roll fins have been used for many years to reduce the rolling of a vessel when sailing, the basic principle being to rely on the flow of water over the fins, the lift for stabilization at low or zero speed being very small and even completely lost at zero speed, which is the biggest disadvantage of roll fins. Some ships choose to install the anti-rolling fin and the anti-rolling water tank, and the anti-rolling fin and the anti-rolling water tank are used for combined anti-rolling at medium and high speeds and the anti-rolling water tank is used for anti-rolling at low speeds. Although the advantages of this approach are clear, installing two types of roll reduction devices not only requires separate design and maintenance of the two systems, but also takes up a significant amount of internal space and displacement of the vessel.

The zero speed fin stabilizer is a new type of stabilizing technology that allows the fin to be stabilized in situations where the boat is drifting or anchored. Based on the berhous theorem, we can obtain: the zero navigational speed fin fluid lift is in direct proportion to the 3 rd power of the chord length; proportional to the length extended to the power of 1; proportional to the angle of rotation to the power of 2. But the maximum rotary fin working angle which can be achieved by adopting a driving structure of a crank connecting rod for the actuating mechanisms is only +/-40 degrees, a larger rotary fin angle and a faster rotary fin speed cannot be provided for the zero-navigation-speed fin stabilizer device, and larger lifting force cannot be provided. In order to research and develop a transmission mechanism which meets the requirements of stabilizing a ship at the full navigational speed, particularly at the zero navigational speed, a large-angle and high-rotation speed is urgently needed.

Disclosure of Invention

In order to meet the anti-rolling requirement of a ship at full navigational speed, particularly zero navigational speed, the invention provides a large-angle high-rotational-speed rotating mechanism, a non-retractable fin stabilizer actuating mechanism of a simple planetary gear transmission mechanism is introduced, and a very large transmission ratio can be obtained by setting the modulus and the tooth number of an inner gear ring of a fin handle, a planet gear and an outer gear ring of a fin shaft, so that the large-angle high-rotational-speed transmission is realized.

The invention has the technical scheme that the large-angle high-rotation-speed rotating mechanism comprises a fin handle with an inner gear ring and a fin shaft for driving fins to rotate, wherein the fin shaft is provided with an outer gear ring, and the fin handle and the fin shaft are in meshing transmission connection through a plurality of rotating bodies with the outer gear rings; the rotor passes through the fixed pin to be connected on non-extendible stabilizer's bearing, and the rotor can be around fixed pin central motion, drives the fin axle by the fin handle through the rotor and rotates around the center to realize the rotation of big angle of fin, high rotational speed.

Furthermore, a locking mechanism and a limiting block are arranged below the rotating mechanism, the upper parts of the two sides of the rotating mechanism are respectively provided with a left fin rotating oil cylinder and a right fin rotating oil cylinder, a piston rod of each fin rotating oil cylinder is hinged with a fin handle through a fin handle pin, and the fin rotating oil cylinders are supported on a supporting seat through an oil cylinder hinge shaft and a joint bearing to form hinged connection; the two fin rotating oil cylinders are connected with a control valve group, and the control valve group controls the two fin rotating oil cylinders to act.

Furthermore, the supporting seat is provided with a dial corresponding to the rotating mechanism.

Furthermore, when the fins are rotated, the rod cavities and the rodless cavities of the left fin rotating oil cylinder and the right fin rotating oil cylinder respectively feed oil to respectively generate pushing force and pulling force, the inner gear ring of the fin handle is pushed and pulled to form a couple, the inner gear ring of the fin handle provides acting force for the outer gear ring of the rotating body, the outer gear ring of the rotating body rotates to provide acting force for the outer gear ring of the fin shaft, and the outer gear ring of the fin shaft reversely rotates.

Furthermore, the transmission ratio formed by the tooth numbers of the inner gear ring of the fin handle and the outer gear ring of the fin shaft can enable the rotation angle of the fin shaft to reach +/-90 degrees and increase the speed.

The invention has the beneficial effects that:

compared with the prior mechanism, the transmission mechanism of the invention comprises:

1. structurally: the structure is simple and compact, the load is distributed on a plurality of teeth, the strength is high, and the bearing capacity is strong.

2. Functionally:

(1) the rotation angle of the fin can reach +/-90 degrees by changing the transmission ratio;

(2) by changing the transmission ratio, the fin rotating angular speed of the current actuating mechanism is 2-3 times that of the current actuating mechanism;

(3) all gears are meshed with each other all the time, and sliding gears are not needed during gear shifting, so that the friction and the wear are small, and the service life is long.

Drawings

FIG. 1 is a schematic view of a non-retractable fin stabilizer device and a rotating mechanism;

FIG. 2 is a schematic view of the connection of the rotating mechanism;

FIG. 3 is a schematic view of a rotating mechanism;

fig. 4 is a turning schematic diagram of the turning mechanism.

Detailed Description

The invention is further described with reference to the following figures and examples.

As shown in fig. 1, the non-retractable fin stabilizer device mainly comprises a supporting seat 1, a locking mechanism 2, a limiting block 3, a dial 4, a rotating mechanism 5, a fin rotating oil cylinder 6, a control valve group 7, a fin 8 and the like. The supporting seat 1 is provided with a rotating mechanism 5, the rotating mechanism 5 is connected with fins 8, a locking mechanism 2 and a limiting block 3 are arranged below the rotating mechanism 5, the upper parts of two sides of the rotating mechanism 5 are respectively provided with a fin rotating oil cylinder 6, two fin rotating oil cylinders 6 are provided with a control valve group 7, and the control valve group 7 is in control connection with the two fin rotating oil cylinders 6. The supporting seat 1 is provided with a dial 4 corresponding to the rotating mechanism 5.

As shown in fig. 2, the rotating mechanism 5 is composed of a fin handle 9 (inner circle processed into an inner gear ring), a rotating body 10 (outer circle processed into an outer gear ring), a fixing pin 11, and a fin shaft 12 (outer circle processed into an outer gear ring). The fin handle 9 is connected with a plurality of rotating bodies 10 through an inner gear ring in a meshed mode, the rotating bodies 10 are connected to the supporting seat 1 through fixing pins 11, and the rotating bodies 10 are connected with the fin shaft 12 through an outer gear ring in a meshed mode. The piston rod of the fin rotating oil cylinder 6 is hinged with the fin handle 9 through a fin handle pin, and the fin rotating oil cylinder 6 is supported on the supporting seat 1 through an oil cylinder hinge shaft and a joint bearing to form hinged connection.

When the fins are rotated, the rod cavities and the rodless cavities of the left fin rotating oil cylinder 6 and the right fin rotating oil cylinder 6 respectively feed oil to respectively generate pushing force and pulling force, and the fin handles 9 are pushed and pulled to form a couple, so that the fin handles 9 (inner circles of which are processed into inner gear rings) are driven to rotate around the rotation center. When the fixing pin 11 is fixed, the fin shank 9 and four to eight sets of the rotors 10 are connected by gears so that the rotors 10 (outer circles are processed into outer ring gears) move around the center of the fixing pin 11. The rotor 10 drives the fin shaft 12 (the excircle is processed into an outer gear ring) to rotate around the center through a gear, so that transmission is realized. The number of teeth of the fin handle 9 (the inner circle is processed into the inner gear ring) and the fin shaft 12 (the outer circle is processed into the outer gear ring) are different, the transmission ratio is changed, so that the rotation angle of the fin shaft 12 can reach +/-90 degrees, and the rotation speed of the fin shaft 12 is increased.

As shown in fig. 3, the fixing pin 11 is fixed to the support base 1 as a carrier 15, the ring gear 13 of the fin handle 9 is a driving member and rotates counterclockwise, and the fin shaft 12 is a sun gear 16 and serves as a driven member. Since the planet carrier 15 is fixed, the mechanism is in dead axle transmission, the inner gear ring 13 of the fin handle 9 rotates anticlockwise, the outer gear ring of the rotor 10 is given a force F1 as the planet wheel 14, the planet wheel 14 rotates anticlockwise, a force F2 is given to the sun wheel 16, and the sun wheel 16 also rotates clockwise, so that the rotation direction of the inner gear ring 13 is opposite to that of the sun wheel 16. In the dead axle transmission, the planet wheel 14 acts as a transition wheel, changing the direction of rotation of the driven member sun wheel 16.

FIG. 4 is a turning schematic diagram: the center of the mechanism is a fin shaft 12 (the excircle of which is processed into an outer gear ring), the fin shaft 12 (the excircle of which is processed into the outer gear ring) is normally meshed with a rotor 10 (the excircle of which is processed into the outer gear ring), the meshing rotating directions of the two outer gears are opposite, the rotor 10 (the excircle of which is processed into the outer gear ring) rotates, and a fixing pin 11 is fixed, and the transmission in the mode similar to a parallel shaft type is called fixed shaft transmission. The fin handle 9 (inner circle processed into inner gear ring) is an inner gear, is normally engaged with the rotor 10 (outer circle processed into outer gear ring), is engaged with the inner gear and the outer gear, and has the same rotating direction.

Claims

1. A large-angle high-rotation-speed rotating mechanism is provided with a fin handle with an inner gear ring and a fin shaft for driving a fin to rotate, wherein the fin shaft is provided with an outer gear ring, and the large-angle high-rotation-speed rotating mechanism is characterized in that: the fin handle is in meshed transmission connection with the fin shaft through a plurality of rotating bodies with outer gear rings; the rotor is connected to a supporting seat of the non-retractable fin stabilizer through a fixed pin, the rotor can move around the center of the fixed pin, and a fin handle drives a fin shaft to rotate around the center through the rotor, so that the large-angle and high-rotation-speed rotation of fins is realized; a locking mechanism and a limiting block are arranged below the rotating mechanism, the upper parts of the two sides of the rotating mechanism are respectively provided with a left fin rotating oil cylinder and a right fin rotating oil cylinder, a piston rod of each fin rotating oil cylinder is hinged with a fin handle through a fin handle pin, and the fin rotating oil cylinders are supported on a supporting seat through an oil cylinder hinge shaft and a joint bearing to form hinged connection; the two fin rotating oil cylinders are connected with a control valve group, and the control valve group controls the two fin rotating oil cylinders to act.

2. A large angle, high rotational speed rotating mechanism according to claim 1, characterized in that: the supporting seat is provided with a dial corresponding to the rotating mechanism.

3. A large angle, high rotational speed rotating mechanism according to claim 1, characterized in that: when the fins are rotated, the rod cavities and the rodless cavities of the left fin rotating oil cylinder and the right fin rotating oil cylinder respectively feed oil to respectively generate thrust and tension, the inner gear ring of the fin handle is pushed and pulled to form a couple, the inner gear ring of the fin handle provides an acting force for the outer gear ring of the rotating body, the outer gear ring of the rotating body rotates to provide an acting force for the outer gear ring of the fin shaft, and the outer gear ring of the fin shaft rotates reversely.

4. A large angle, high rotation speed rotation mechanism according to any one of claims 1 to 3, characterized in that: the transmission ratio formed by the tooth numbers of the inner gear ring of the fin handle and the outer gear ring of the fin shaft can enable the rotation angle of the fin shaft to reach +/-90 degrees and increase the speed.