CN111605692B

CN111605692B - Pod propeller

Info

Publication number: CN111605692B
Application number: CN202010532082.XA
Authority: CN
Inventors: 侯立勋; 胡安康; 常欣; 王顺
Original assignee: Dalian Maritime University
Current assignee: Dalian Maritime University
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2022-01-28
Anticipated expiration: 2040-06-11
Also published as: CN111605692A

Abstract

The invention discloses a pod propeller which comprises a pod body and a propeller, wherein the propeller comprises a propeller shaft, a propeller hub and blades, the propeller shaft penetrates through the end part of the pod body, a main shaft and a motor for driving the main shaft to rotate are arranged in the pod body, the main shaft is connected with the propeller shaft through a ball-cage universal joint, the ball-cage universal joint comprises a spherical inner slideway at the output end of the main shaft, a spherical outer slideway at the end part of the propeller shaft and a rolling ball between the spherical inner slideway and the spherical outer slideway, and a direction controller for controlling the propeller shaft to do up-and-down swinging motion around the ball-cage universal joint is arranged in the pod body. The invention has high angle adjustment efficiency, flexible operation and simple and compact structure, and can realize the adjustment of the propeller angle on the premise of not changing the integral angle of the motor.

Description

Pod propeller

Technical Field

The invention relates to a pod propeller.

Background

At present, the propulsion mode adopted in the field of ships is mainly the traditional shaft type propeller of a diesel engine, and the traditional shaft type propeller cannot well meet the requirements of modern green ship construction due to low efficiency, high emission and poor vibration noise performance. With the wide development of motor propulsion technology, the electric propulsion mode represents remarkable advantages. Compared with the traditional shaft type propeller propulsion system, the electric propulsion mode has the characteristics of meeting the requirements of design and construction of green ships in the aspect of controlling environmental pollution. On the basis of motor technology, people put forward an electric pod type propulsion system, and successfully break through the traditional propulsion mode of diesel engine shafting driving. The electric propulsion system has the advantages of higher efficiency and more flexible operation compared with the traditional propeller by combining the pod, the motor and the propeller into an integrated unit and arranging the integrated unit at the bottom of the ship body without the traditional transmission shaft system. Pod propellers have been brought into ship propulsion development planning by navies of various countries in the world due to excellent sailing performance, and are gradually popularized to various novel military ships.

When a ship sails in the stormy waves, rolling and pitching can be generated, however, the existing pod propeller only can generate force in the horizontal direction, the stability of the ship cannot be improved, and the requirements of certain special ship types are difficult to be well met.

Disclosure of Invention

The invention aims at solving the problems and researches and designs a pod propeller. The technical means adopted by the invention are as follows:

the utility model provides a nacelle propeller, includes the nacelle body and screw, the screw includes oar axle, oar hub and blade, the oar hub rotates under the oar axle drive, and then drives the blade and rotate, the oar axle passes the tip of the nacelle body, the internal main shaft that is equipped with of nacelle and the motor that is used for driving main shaft pivoted, main shaft department is equipped with brake locking device, the main shaft passes through the rzeppa universal joint and is connected with the oar axle, the internal direction control machine that is used for controlling the oar axle and does luffing motion around the rzeppa universal joint that is equipped with of nacelle, the tip of the nacelle body is equipped with the breach that supplies the oar axle luffing motion.

Further, the free end of the main shaft is fixed in the nacelle body through a thrust bearing.

Further, the rzeppa universal joint includes the spherical inner slide way of main shaft output end, the spherical outer slide way of oar axle tip and the rolling ball between spherical inner slide way and the spherical outer slide way, the spherical outer slide way of rzeppa universal joint is at the tip of oar axle, spherical outer slide way department is equipped with and is used for carrying out the fixing bearing who fixes a position spherical outer slide way, it is internal that fixing bearing fixes a position the nacelle, fixing bearing includes the bearing main part and sets up in the inside accommodation space that is used for holding spherical outer slide way of bearing main part, still be equipped with the bar through-hole in the bearing main part, the oar axle passes the bar through-hole and can be in the bar through-hole luffing motion.

Further, the direction controller includes supporter, control body and rim motor, it is internal that the supporter is fixed in the nacelle, be equipped with the direction control ball on the propeller shaft, the direction control ball nestification in the control is internal, be equipped with the spout on the supporter, be equipped with control body rack on the control body, rim motor can drive ring gear and be reciprocating rotary motion, ring gear passes through drive gear and control body rack drive control body and is rotary motion around the rzeppa universal joint along the spout.

Furthermore, the supporting body is of a plate-shaped structure, a rectangular through hole is formed in the supporting body, the sliding grooves are formed in the side walls of the two sides of the through hole, and a control body rack is arranged on one side of the control body.

Further, the tip of the hanging cabin body is provided with a spherical crown, the bar-shaped gap is arranged at the center of the spherical crown, and the propeller hub is arranged outside the spherical crown.

Compared with the prior art, the internal motor of the pod body of the pod propeller drives the propeller to rotate through the main shaft, the ball-cage universal joint and the propeller shaft so as to generate force along the direction of the propeller shaft. The direction controller can drive the propeller shaft to rotate around the ball cage type universal joint, so that an included angle exists between the propeller shaft line and a horizontal line, the propeller generates component force in the vertical direction, the angle adjusting efficiency is high, the operation is flexible, the structure is simple and compact, and the angle adjustment of the propeller can be realized on the premise of not changing the integral angle of the motor. In addition, the pod propeller can generate component force in the vertical direction, and the stability of the ship in stormy waves can be effectively improved.

Drawings

Fig. 1 is a schematic diagram of the overall structure of an embodiment of the present invention.

FIG. 2 is a front view of a spherical cap seal interface according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a fixed bearing according to an embodiment of the present invention.

Fig. 4 is a schematic structural view of a birfield type universal joint according to an embodiment of the present invention.

Fig. 5 is a half-cut view of a stationary bearing according to an embodiment of the present invention.

Fig. 6 is a schematic diagram showing an internal structure of a birfield type universal joint according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a spherical inner slide according to an embodiment of the invention.

Fig. 8 is a schematic structural diagram of a spherical outer slide according to an embodiment of the present invention.

Fig. 9 is a schematic view showing a moving state of the birfield type universal joint according to the embodiment of the present invention.

Fig. 10 is a schematic view showing another state of motion of the birfield joint according to the embodiment of the present invention.

Fig. 11 is a schematic view of the overall structure of the direction controller according to the embodiment of the present invention.

Fig. 12 is a schematic diagram of an internal structure of a direction controller according to an embodiment of the present invention.

Fig. 13 is a schematic structural diagram of a control body according to an embodiment of the present invention.

Fig. 14 is a schematic structural view of a propeller shaft according to an embodiment of the present invention.

Fig. 15 is a schematic structural view of a transmission gear according to an embodiment of the present invention.

Fig. 16 is a schematic structural view of a ring gear according to an embodiment of the present invention.

Fig. 17 is a schematic structural view of a rim motor according to an embodiment of the present invention.

Fig. 18 is a schematic structural diagram of a support according to an embodiment of the present invention.

Fig. 19 is a semi-cut view of the control body and a schematic view of the propeller shaft in a horizontal state according to an embodiment of the present invention.

Fig. 20 is a semi-cut view of a control body and a schematic view of a shaft in a tilted state according to an embodiment of the present invention.

Fig. 21 and 22 are half-cut views of a control body according to an embodiment of the present invention.

FIG. 23 is a schematic diagram of a structure for generating a vertical upward force according to an embodiment of the present invention.

Figure 24 is a schematic view of a vertical downward force generating configuration according to an embodiment of the present invention.

Detailed Description

As shown in fig. 1 to 18, a pod propeller includes a pod body 12 and a propeller, the propeller includes a propeller shaft 3, a propeller hub 2 and a blade 1, the propeller hub 2 is driven by the propeller shaft 3 to rotate, and then drives the blade 1 to rotate, the propeller shaft 3 passes through an end portion of the pod body 12, a main shaft 9 and a motor 10 for driving the main shaft 9 to rotate are arranged in the pod body 12, a brake locking device 8 is arranged at the main shaft 9, the brake locking device 8 plays a role in supporting and controlling the main shaft 9, the brake locking device 8 adopts an existing brake structure, and details are not repeated here. The axial force that main shaft 9 produced is born by thrust bearing 11, main shaft 9 passes through the rzeppa universal joint 6 and is connected with oar axle 3, rzeppa universal joint 6 includes spherical inner slide 17, the spherical outer slide 16 of oar axle 3 tip and the rolling ball 15 between spherical inner slide 17 and the spherical outer slide 16 of main shaft 9 output, be equipped with in the hanging cabin body 12 and be used for controlling oar axle 3 and do luffing motion around the rzeppa universal joint 6 direction control machine 5, the tip of the hanging cabin body 12 is equipped with the strip breach 14 that supplies oar axle 3 luffing motion. As a power source, the motor 10 directly drives the main shaft 9 to move, and the main shaft 9 further drives the paddle shaft 3 to rotate through the rzeppa universal joint 6, so as to drive the blades 1 to rotate to generate force along the axial direction of the paddle shaft 3.

The spherical outer slideway 16 of rzeppa universal joint 6 is spherical structure, 16 departments of spherical outer slideway are equipped with and are used for carrying out the fixing bearing 7 of location to spherical outer slideway 6, fixing bearing 7 is fixed in and hangs in the cabin body 12, fixing bearing 7 includes the bearing main part and sets up in the inside accommodation space that is used for holding spherical outer slideway of bearing main part, still be equipped with the bar through-hole in the bearing main part, oar axle 3 passes the bar through-hole and can be in the bar through-hole luffing motion.

The direction control machine 5 comprises a supporting body 18, a control body 19 and a rim motor 23, wherein the supporting body 18 is fixed in the nacelle body 12, the paddle shaft 3 is provided with a direction control ball 20, the direction control ball 20 is nested in the control body 19, the supporting body 18 is provided with a sliding groove 26, the control body 19 is provided with a control body rack 21, the rim motor 23 can drive the ring gear 24 to do reciprocating rotation movement, the ring gear 24, the transmission gear 25 and the control body rack 21 are meshed in sequence, the ring gear 24 drives the control body 19 to move up and down along the slide groove 26 through the transmission gear 25 and the control body rack 21, drives the direction control ball 20 to move up and down and rotate relative to the driving control body 19, thereby driving the paddle shaft 3 to rotate, thereby tilting the paddle shaft 3 up or down relative to the axis 28 of the main shaft 9 as shown in fig. 19 and 20. The direction control ball 20 on the paddle shaft 3 is nested in the inner cavity 22 of the control body 19, so that the paddle shaft 3 can synchronously rotate around the rzeppa universal joint 6 along with the direction control body 19, thereby adjusting the included angle between the paddle shaft 3 and the horizontal line, and leading the force of the blade 1 along the axial direction of the paddle shaft 3 to have a component force in the vertical direction. The direction control ball 20 is displaced in the longitudinal direction during the rotational movement of the shaft 3 about the birfield joint 6, and the inner cavity 22 of the control body 19 is provided with a cavity transition section 27, and the cavity transition section 27 is cylindrical with a height equal to the longitudinal displacement of the direction control ball 20, so that the direction control ball 20 can be axially restrained by the inner cavity 22 during the up-and-down movement, as shown in fig. 21 and 22.

The supporting body 18 is a plate-shaped structure, a rectangular through hole is formed in the supporting body 18, the sliding grooves 26 are formed in the side walls of the two sides of the through hole, and a control body rack 21 is arranged on one side of the control body 19.

The tip of hanging cabin body 12 is equipped with spherical crown 4, bar breach 14 sets up in the center department of spherical crown 4, propeller hub 2 sets up in the outside of spherical crown 4, propeller hub 2 and the hanging cabin body 12 realize water-tight through spherical crown 4.

As shown in fig. 23 and 24, when it is needed to generate a vertical upward direction, the direction controller 5 drives the paddle shaft 3 to rotate upward around the birfield universal joint 6, and the angle between the paddle shaft 3 and the horizontal line is

With respect to the pod propulsion disclosed in the invention,

is 10 degrees, and the total force of the propeller shaft 3 in the direction of the propeller shaft is T_{General assembly}The component force vertically upward is

Similarly, a vertical downward component of force is generated by the downward rotational movement of the shaft 3 about the rzeppa joint 6.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims

1. A pod propeller comprises a nacelle body (12) and a propeller, wherein the propeller comprises a propeller shaft (3), a propeller hub (2) and blades (1), the propeller hub (2) is driven by the propeller shaft (3) to rotate so as to drive the blades (1) to rotate, the propeller shaft (3) penetrates through the end part of the nacelle body (12), and the pod propeller is characterized in that: the improved structure of the wind power generator is characterized in that a main shaft (9) and a motor (10) used for driving the main shaft (9) to rotate are arranged in the nacelle body (12), a brake locking device (8) is arranged at the position of the main shaft (9), the main shaft (9) is connected with the propeller shaft (3) through a ball-cage type universal joint (6), a direction control machine (5) used for controlling the propeller shaft (3) to do up-and-down swinging motion around the ball-cage type universal joint (6) is arranged in the nacelle body (12), a strip-shaped notch (14) used for enabling the propeller shaft (3) to swing up and down is arranged at the end part of the nacelle body (12), the direction control machine (5) comprises a support body (18), a control body (19) and a rim motor (23), the support body (18) is fixed in the nacelle body (12), a direction control ball (20) is arranged on the propeller shaft (3), the direction control ball (20) is nested in the control body (19), a sliding groove (26) is arranged on the support body (18), be equipped with control body rack (21) on the control body (19), rim motor (23) can drive ring gear (24) and do reciprocating rotary motion, ring gear (24) are through drive gear (25) and control body rack (21) drive control body (19) and are rotary motion around rzeppa universal joint (6) along spout (26).

2. The pod propeller of claim 1, wherein: the free end of the main shaft (9) is fixed in the hanging cabin body (12) through a thrust bearing (11).

3. The pod propeller of claim 1, wherein: ball cage universal joint (6) include spherical inner slide (17), oar axle (3) tip spherical outer slide (16) and spherical inner slide (17) of main shaft (9) output and roll ball (15) between spherical outer slide (16), spherical outer slide (16) of ball cage universal joint (6) are at the tip of oar axle (3), spherical outer slide (16) department is equipped with and is used for carrying out fixed fixing's fixing bearing (7) to spherical outer slide, fixing bearing (7) are fixed in and hang cabin body (12), fixing bearing (7) include the bearing main part and set up the accommodation space who is used for holding spherical outer slide in the inside of bearing main part, still be equipped with the bar through-hole in the bearing main part, oar axle (3) pass the bar through-hole and can be in the bar through-hole luffing motion.

4. The pod propeller of claim 3, wherein: the supporting body (18) is of a plate-shaped structure, a rectangular through hole is formed in the supporting body (18), the sliding grooves (26) are formed in the side walls of the two sides of the through hole, and a control body rack (21) is arranged on one side of the control body (19).

5. The pod propeller of claim 1, wherein: the tip of hanging cabin body (12) is equipped with spherical crown (4), bar breach (14) set up in the center department of spherical crown (4), propeller hub (2) set up in the outside of spherical crown (4).