CN209870709U

CN209870709U - Electric propulsion ship

Info

Publication number: CN209870709U
Application number: CN201920281925.6U
Authority: CN
Inventors: 袁培银; 赵宇; 周子豪
Original assignee: Chongqing Jiaotong University
Current assignee: Chongqing Jiaotong University
Priority date: 2019-03-06
Filing date: 2019-03-06
Publication date: 2019-12-31
Anticipated expiration: 2029-03-06

Abstract

The utility model discloses an electric propulsion ship, which comprises a body and power devices arranged on the body, wherein the central axis of the body is taken as a central line, two power devices are symmetrically arranged, each power device comprises a driving device and a propeller arranged at the end part of the driving device, a hydraulic lifter extends downwards to form a transmission column, the transmission column is connected with a free auxiliary wheel, a clamping seat and a driving wheel, the driving wheel is meshed with a driven wheel, and the driven wheel is connected with the propeller; the hydraulic lifter comprises a pressure increasing and decreasing device, and the pressure increasing and decreasing device adjusts the hydraulic pressure difference by controlling hydraulic oil in the hydraulic lifter, so that the driving wheel is driven to lift through the transmission column and the first and second connecting shafts, and the free auxiliary wheel is assisted to be meshed with the driven wheel; the driving device also comprises a slewing mechanism arranged at the top of the shell. The utility model discloses compact structure, stability is high, and power is strong, and is little to the change of current point propulsion ship, can extensively apply to among the power device of electric propulsion ship.

Description

Electric propulsion ship

Technical Field

The invention relates to an electric propulsion ship, and belongs to the technical field of ship manufacturing.

Background

The electric propulsion ship refers to a modern ship which is propelled by using electric power as power, and most of the modern ships are propelled by using the electric power, and the electric power is from a storage battery or a ship generator. In some small-sized surface ships or underwater ships, a diesel engine or a steam turbine is used for driving a generator to generate electricity, and a propulsion motor is rotated to propel the ships. In the prior art, a power device of an electric propulsion ship is generally in a use mode of adding a rudder to a propeller, the structure is complex, complicated and not compact enough, and the power device is too large in size in a small ship and is not beneficial to navigation of the ship.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides an electric propulsion ship which is compact in structure, comprises a power device of the electric propulsion ship capable of driving and steering the ship simultaneously, adopts a novel hydraulic lifter to connect a driving wheel and a driven wheel and drives the driving wheel and the driven wheel to operate, and has novel and compact structure and strong stability; in addition, the design has a slewing mechanism which simultaneously plays the function of a rudder.

The technical scheme is as follows: in order to solve the technical problem, the invention discloses an electric propulsion ship, which comprises a body and power devices arranged on the body, wherein the two power devices are symmetrically arranged by taking the central axis of the body as a central line, and each power device comprises a driving device and a propeller arranged at the end part of the driving device, and is characterized in that the driving device comprises a shell 13, the top of the shell 13 is provided with a hydraulic lifter 8, the hydraulic lifter 8 extends downwards to form a transmission column 14, the transmission column 14 is connected with a free auxiliary wheel 9, the free auxiliary wheel 9 is connected with a clamping seat 10 through a first connecting shaft 16-1, the clamping seat 10 is connected with a driving wheel 6 through a second connecting shaft 16-2, the driving wheel 6 is meshed with a driven wheel 7, and the driven wheel 7 is connected with the propeller 15 through a third; the hydraulic lifter 8 comprises a pressure increasing and decreasing device 12, the pressure increasing and decreasing device 12 adjusts the hydraulic pressure difference by controlling the hydraulic oil 17 in the hydraulic lifter 8, so that the driving wheel is driven to lift through the transmission column 14 and the first and second connecting shafts, and the free auxiliary wheel 9 is assisted to be meshed with the driven wheel 7;

the drive arrangement further comprises a slewing mechanism 1 arranged on top of the housing 13.

From the longitudinal section of the ship body, the propeller of the ship is still installed at the stern, the propeller replaces a rudder of the ship by utilizing the advantages of the electric propulsion ship, two propellers are installed at the position with mirror symmetry to serve as a power propulsion device, and meanwhile, the speed difference of the two propellers can be utilized to realize accurate steering of the ship or be installed at the position close to the center.

Further, the swing mechanism 1 is composed of a driving device, a transmission device and a swing support.

The rotary part winds the rotary central line to realize rotary motion. Meanwhile, the device can be matched with other mechanisms to finish space transportation tasks or other working cycles of goods. The rotary mechanism consists of a driving device, a transmission device and a rotary support. The power of the driving device is transmitted to a big gear ring fixed on the frame through an output pinion of the transmission device, so that the turntable rotates around the rotation center line of the turntable. The transmission modes are divided into mechanical transmission, electric transmission and hydraulic transmission.

Furthermore, a bevel gear 2 is arranged on the hydraulic lifter 8 to realize the movement between the cross shafting.

Furthermore, the external one end of hydraulic pressure riser 8 is connected with flange 4, and flange 4 is external to have pipeline or equipment. The connecting flange is a detachable joint which is used for fixing two pipelines, pipe fittings or equipment on a flange respectively, then adding a flange pad between the two flanges and finally tightening the two flanges by bolts to tightly combine the two flanges.

Further, the connecting flange 4 is connected with the hydraulic lifter 8 through the bearing housing 3. The bearing seat is a large-scale and super-large-scale bearing seat which can receive comprehensive load and has a special structure, and has the characteristics of compact structure, sensitive rotation, convenient device maintenance and the like. The bearing is provided with a supporting point, the inner supporting point of the bearing is a shaft, and the outer supporting is a bearing seat.

Further, the front end of the draft tube 11 is connected to the outer wall of the casing of the third connecting shaft 16-3 at the end connected to the propeller 15, and the rear end of the draft tube 11 faces outward.

Furthermore, the draft tube 11 is cylindrical, a propeller 15 is placed in the draft tube, the propeller 15 has a set of blades 5, and the outer diameter of the blades 5 is smaller than the inner diameter of the draft tube 11.

The rear wake flow of the propeller is limited by the structure of the flow guide pipe and can not be contracted, so that the axial induction speed at the outlet of the flow guide pipe is reduced, and the propeller can be more favorably propelled; the distance between the blade tip and the guide pipe is small, and the tip eddy loss caused by the pressure difference between the blade surface and the blade back is reduced; the water pumping action of the spiral propeller in the draft tube makes the water flow speed in the tube higher than that outside the tube, the pressure in the tube is lower than that outside the tube, and the resultant force direction of the pressure points to the center of the draft tube and deviates from the advancing direction of the ship. The resultant force is decomposed into a radial component force and an axial component force, because the guide pipe is in a cylindrical shape with two closed ends, the radial component forces around the guide pipe are mutually offset, and thus, only the axial component force is left to push the guide pipe, which is beneficial to the forward of the ship. In fact, the axial force acting on the flow-guide tube also needs to take into account the consumption of the water flow resistance experienced by the flow-guide tube itself.

Has the advantages that: (1) the invention has compact structure, high stability and strong power, has small change on the prior point-propelled ship, and can be widely applied to the power device of the electric-propelled ship; (2) the design of the swing mechanism is adopted, so that the transmission efficiency is high, the structure is compact, the work is reliable, the service life is long, and the transmission ratio is accurate; (3) the design of the flow guide pipe is adopted, so that the axial induction speed at the outlet of the flow guide pipe is reduced, and the propulsion of the propeller is facilitated, thereby being beneficial to the forward movement of the ship.

Drawings

Fig. 1-1 is a schematic view of the installation position of the propeller in the present invention.

Fig. 1-2 is a top view of fig. 1-1.

Fig. 2 is a schematic structural diagram of the power plant of the present invention.

Fig. 3 is a schematic structural view of the hydraulic lifter of the present invention.

FIG. 4 is a schematic view of the structure of a draft tube according to the present invention.

The hydraulic lifting device comprises a rotary mechanism 1, conical teeth 2, a bearing seat 3, a connecting flange 4, paddles 5, a driving wheel 6, a driven wheel 7, a hydraulic lifter 8, a free auxiliary wheel 9, a clamping seat 10, a guide pipe 11, a pressure increasing and reducing device 12, a shell 13, a transmission column 14, a propeller 15, a first connecting shaft 16-1, a second connecting shaft 16-2, a third connecting shaft 16-3 and hydraulic oil 17.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Examples

The invention provides an electric propulsion ship, which comprises a body and power devices arranged on the body, wherein the two power devices are symmetrically arranged by taking the central axis of the body as a central line, and each power device comprises a driving device and a propeller arranged at the end part of the driving device, and is characterized in that the driving device comprises a shell 13, a hydraulic lifter 8 is arranged at the top of the shell 13, a transmission column 14 extends downwards from the hydraulic lifter 8, the transmission column 14 is connected with a free auxiliary wheel 9, the free auxiliary wheel 9 is connected with a clamping seat 10 through a first connecting shaft 16-1, the clamping seat 10 is connected with a driving wheel 6 through a second connecting shaft 16-2, the driving wheel 6 is meshed with a driven wheel 7, and the driven wheel 7 is connected with the propeller 15 through a third connecting shaft 16; the hydraulic lifter 8 comprises a pressure increasing and decreasing device 12, the pressure increasing and decreasing device 12 adjusts the hydraulic pressure difference by controlling the hydraulic oil 17 in the hydraulic lifter 8, so that the driving wheel is driven to lift through the transmission column 14 and the first and second connecting shafts, and the free auxiliary wheel 9 is assisted to be meshed with the driven wheel 7;

The rotary mechanism (1) is composed of a driving device, a transmission device and a rotary support. The embodiment adopts the existing slewing mechanism to realize slewing motion.

The hydraulic lifter 8 is also provided with a bevel gear 2 to realize the movement between the crossed shafting; one end of the outside of the hydraulic lifter 8 is connected with a connecting flange 4, and the connecting flange 4 is externally connected with a pipeline or equipment. The connecting flange is a detachable joint which is used for fixing two pipelines, pipe fittings or equipment on a flange respectively, then adding a flange pad between the two flanges and finally tightening the two flanges by bolts to tightly combine the two flanges. The connecting flange 4 is connected with the hydraulic lifter 8 through the bearing seat 3. The bearing seat is a large-scale and super-large-scale bearing seat which can receive comprehensive load and has a special structure, and has the characteristics of compact structure, sensitive rotation, convenient device maintenance and the like. The bearing is provided with a supporting point, the inner supporting point of the bearing is a shaft, and the outer supporting is a bearing seat. The outer wall of the shell of the end part of the third connecting shaft 16-3 connected with the propeller 15 is connected with the front end of the guide pipe 11, and the rear end of the guide pipe 11 faces outwards. The draft tube 11 is cylindrical, a propeller 15 is arranged in the draft tube, the propeller 15 is provided with a group of blades 5, and the outer diameter of each blade 5 is smaller than the inner diameter of the draft tube 11.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.

Claims

1. An electric propulsion ship comprises a body and a power device arranged on the body, wherein the central axis of the body is taken as a central line, two power devices are symmetrically arranged, each power device comprises a driving device and a propeller arranged at the end part of the driving device, the method is characterized in that: the driving device comprises a shell (13), a hydraulic lifter (8) is arranged at the top of the shell (13), a transmission column (14) extends downwards from the hydraulic lifter (8), the transmission column (14) is connected with a free auxiliary wheel (9), the free auxiliary wheel (9) is connected with a clamping seat (10) through a first connecting shaft (16-1), the clamping seat (10) is connected with a driving wheel (6) through a second connecting shaft (16-2), the driving wheel (6) is meshed with a driven wheel (7), and the driven wheel (7) is connected with a propeller (15) through a third connecting shaft (16-3); the hydraulic lifter (8) comprises a pressure increasing and decreasing device (12), and the pressure increasing and decreasing device (12) adjusts hydraulic pressure difference by controlling hydraulic oil (17) in the hydraulic lifter (8), so that a driving wheel is driven to lift through a transmission column (14) and a first connecting shaft and a second connecting shaft, and a free auxiliary wheel (9) is assisted to be meshed with a driven wheel (7);

the driving device also comprises a slewing mechanism (1) arranged at the top of the shell (13).

2. An electrically propelled boat according to claim 1, wherein: the slewing mechanism (1) is composed of a driving device, a transmission device and a slewing support.

3. An electrically propelled boat according to claim 1, wherein: the hydraulic lifter (8) is also provided with a bevel gear (2).

4. An electrically propelled boat according to claim 1, wherein: the hydraulic lifter is characterized in that one end of the outer portion of the hydraulic lifter (8) is connected with a connecting flange (4), and a pipeline or equipment is connected to the connecting flange (4) externally.

5. An electrically propelled boat according to claim 4, wherein: the connecting flange (4) is connected with the hydraulic lifter (8) through the bearing seat (3).

6. An electrically propelled boat according to claim 1, wherein: the front end of a guide pipe (11) is connected to the outer wall of the shell of the end part of the third connecting shaft (16-3) connected with the propeller (15), and the rear end of the guide pipe (11) faces outwards.

7. An electrically propelled boat according to claim 6, wherein: the honeycomb duct (11) is cylindric, and screw (15) have been placed to its inside, screw (15) have a set of paddle (5), the external diameter of paddle (5) is less than the internal diameter of honeycomb duct (11).