CN210618432U - Novel contra-rotating propeller ship lateral propulsion system - Google Patents
Novel contra-rotating propeller ship lateral propulsion system Download PDFInfo
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- CN210618432U CN210618432U CN201921102626.8U CN201921102626U CN210618432U CN 210618432 U CN210618432 U CN 210618432U CN 201921102626 U CN201921102626 U CN 201921102626U CN 210618432 U CN210618432 U CN 210618432U
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Abstract
The utility model is suitable for the technical field of ship propulsion systems, and provides a novel contra-rotating propeller ship lateral propulsion system, which comprises a driving bevel gear shaft and a contra-rotating propeller mechanism consisting of two driven bevel gears, two propeller shafts and two propellers; the driving bevel gears at the lower end of the driving bevel gear shaft are meshed with the two driven bevel gears, the two driven bevel gears are symmetrically arranged on two sides of the lower end of the driving bevel gear shaft, the two driven bevel gears are respectively and fixedly connected with one end of the corresponding propeller shafts, and the other end of each propeller shaft is fixedly connected with the corresponding propeller. The utility model discloses after installing, with drive bevel gear hub connection external power unit, when drive bevel gear shaft is rotatory, two screw relative rotations form contra-rotating oar side direction advancing device, and two screws are mutually as preceding oar and back oar respectively, and the rotational kinetic energy loss of preceding oar wake can be utilized and obtain the recovery by back oar to raise the efficiency.
Description
Technical Field
The utility model belongs to the technical field of marine propulsion system, mainly be applied to the boats and ships side direction propeller that the offside thruster has size limitation, especially relate to a novel to rotating oar boats and ships side direction propulsion system.
Background
Along with the development of shipping, each wharf is increasingly busy, the requirement on the berthing time of the ship is higher and higher, and the lateral thruster is used as a special thruster capable of providing left and right lateral thrust for the ship, so that the maneuvering performance of the ship in port berthing can be greatly improved. Generally, the thrust of the side thruster is determined by the propeller diameter and the input power, and the larger the input power and the larger the propeller diameter, the larger the thrust. Considering the influence of cavitation, vibration and other factors, the power which can be absorbed by the propeller is limited, and for a specific propeller diameter, a limited value exists in the input power of the side thruster.
The propeller diameter of the lateral thruster is limited by the structure of the ship body, particularly for ships sailing at high sailing speed and in shallow water, but the power requirement of the lateral thruster is large in consideration of the thrust requirement of the lateral thruster during the operation of the ship, and the power requirement of the lateral thruster is often higher than the conventional power limit. Fig. 2 is a schematic diagram of a conventional lateral thruster, and as power is increased, the sizes of transmission components, particularly driven bevel gears, of the conventional lateral thruster are correspondingly increased, so that the size of a gearbox body is increased, water flow blocked by the gearbox body is increased, and the exertion of thrust is influenced.
The principle of the propeller as a special propeller is that the loss of rotational kinetic energy of the wake of the front propeller can be recovered by the use of the rear propeller, thus improving efficiency. However, the conventional contra-rotating propellers have different inlet flow conditions of the front propeller and the rear propeller, so that the screw pitches and diameters of the two propellers are different, the contra-rotating propellers have specific directionality during use, the reverse rotation effect is poor, and the contra-rotating propellers are not in accordance with the working requirements of a lateral propulsion system, so the contra-rotating propellers are commonly used for full-rotation propellers and cannot be used on lateral thrusters.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the problem that boats and ships side thruster received screw diameter restriction, provide a novel to changeing oar boats and ships side direction propulsion system.
The utility model is realized in such a way, a novel contra-rotating propeller ship lateral propulsion system comprises a driving bevel gear shaft and a contra-rotating propeller mechanism consisting of two driven bevel gears, two propeller shafts and two propellers; the driving bevel gears at the lower end of the driving bevel gear shaft are meshed with the two driven bevel gears, the two driven bevel gears are symmetrically arranged on two sides of the lower end of the driving bevel gear shaft, the two driven bevel gears are respectively and fixedly connected with one end of the corresponding propeller shafts, and the other end of each propeller shaft is fixedly connected with the corresponding propeller.
The utility model also provides the optimization, the design parameters of the two propellers are consistent, the diameters are the same, and the rotating speeds are the same; when the device works, the rotating directions are opposite, and the device can send out the same thrust in forward rotation and reverse rotation.
The utility model discloses still provide preferred, this system still includes the gearbox casing, the gearbox casing cover is established oar axle and driven bevel gear's the outside, and the both ends of gearbox casing rotate with the oar axle and be connected, the confession has been seted up at the top of gearbox casing drive bevel gear axle an opening that stretches into.
The utility model discloses still provide preferred, this system still includes the cylinder, the cylinder cover is established in the outside and the fixed connection of screw and gearbox body, the delivery port of both sides for corresponding two screws of aforementioned cylinder, cylinder both ends are passed through welding or other connected mode and are connected with hull pipe tunnel.
The utility model discloses it is preferred still to provide, the inner wall of cylinder is equipped with the stainless steel guard ring corresponding to the mounted position of screw.
The utility model discloses still provide preferred, be fixed with a plurality of mounting rib plate on the outer wall of cylinder, mounting rib plate fixes advancing system on the hull through welding or other connected mode.
The utility model discloses still provide preferred, the oar axle passes through tapering or flange fixed connection with the screw that corresponds.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a novel contra-rotating propeller ship side direction propulsion system, outside power unit is connected to the one end of drive bevel gear axle, and two driven bevel gear are connected to the other end, and can drive two driven bevel gear simultaneously and rotate through the screw that the propeller shaft is connected, and preceding oar and back oar are regarded as respectively to two screws, and the rotatory kinetic energy loss of preceding oar wake can be utilized and obtain retrieving by the back oar to raise the efficiency.
The utility model discloses a contra-rotating oar, power distribution undertakes for two screws, has reduced the load of single oar, under the condition of restriction diameter, can absorb bigger power. Meanwhile, the load of the single propeller is reduced, the size of an internal transmission part is reduced, and the size of the gearbox body is correspondingly reduced, so that the blocking effect of the gearbox body on water flow is reduced, in addition, the rear propeller of the rotary propeller can absorb the loss of the rotational kinetic energy of the wake flow of the front propeller, and the thrust loss is greatly reduced.
The utility model discloses a contra-rotating propeller structure, two unanimous screws of size have been designed specially and the problem that the front and back oar inflow condition is different has been solved, have the same hydrodynamic performance characteristic, also make gearbox body's appearance bilateral symmetry to the mechanical structure of commentaries on classics oar simultaneously, consequently the utility model discloses thrust size is the same when corotation and reversal, is favorable to the equilibrium of control performance about the boats and ships.
Drawings
Fig. 1 is a schematic view of the overall structure of a novel contra-rotating propeller ship lateral propulsion system of the present invention.
Fig. 2 is a schematic view of a conventional lateral thruster.
In the figure: 1-driving bevel gear shaft, 2-driven bevel gear, 3-propeller shaft, 4-propeller, 5-gear box body, 6-cylinder body, 7-stainless steel protective ring and 8-mounting rib plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the present invention provides a technical solution: a novel contra-rotating propeller ship lateral propulsion system comprises a driving bevel gear shaft 1, a driven bevel gear 2, a propeller shaft 3 and a propeller 4.
The lower extreme of drive bevel gear axle 1 is fixed with the drive bevel gear of an organic whole connection, driven bevel gear 2 is provided with two of relative setting, two driven bevel gear 2 all mesh drive bevel gear, oar axle 3 is provided with two and corresponds two driven bevel gear 2 respectively, screw 4 is provided with two and corresponds two oar axles 3 respectively, the driven bevel gear 2 that the one end fixed connection of oar axle 3 corresponds, the screw 4 that other end fixed connection corresponds, and oar axle 3 is located the rotation axis of driven bevel gear 2 and screw 4.
In the embodiment, the driving bevel gear shaft 1 is perpendicular to the propeller shaft 3, the lower end of the driving bevel gear shaft 1 is fixed at the rotating axis of the driving bevel gear, the upper end of the driving bevel gear shaft 1 is connected with the output end of an external power mechanism so as to obtain a power source, the driven bevel gear 2 is meshed with the driving bevel gear shaft 1 to obtain power from the driving bevel gear shaft 1, the two propellers 4 are symmetrically arranged, the two propellers 4 are respectively used as a front propeller and a rear propeller, the loss of the rotational kinetic energy of the front propeller wake flow can be recycled by the rear propeller, the two propellers 4 rotate relatively to form a contra-rotating propeller lateral propulsion device, when the thrust needs to be changed, the input rotating speed of the source power can be adjusted, when the thrust direction needs to be changed, the input rotating direction of the motive power is changed, the two propellers rotate in opposite directions, and the hydrodynamic features of the two propellers, the magnitude of the thrust force in the reverse rotation is the same as that in the forward rotation.
Further, the contra-rotating propeller ship lateral propulsion system further comprises a gear box body 5, the gear box body 5 is sleeved outside the propeller shaft 3 and the driven bevel gear 2, two ends of the gear box body are respectively connected with the propeller shaft 3 in a rotating mode, and the top of the gear box body 5 is provided with an opening for the driving bevel gear shaft 1 to extend into.
In the present embodiment, the gear housing 5 is connected to the paddle shaft 3 and the drive bevel gear shaft 1 via a rotary seal mechanism.
Further, the system also comprises a cylinder body 6, wherein the cylinder body 6 is sleeved on the outer sides of the propellers 4 and the gear box body 5 and is fixedly connected with the gear box body 5, water conveying ports corresponding to the two propellers 4 respectively are arranged on two sides of the cylinder body 6, and two ends of the cylinder body (6) are connected with the ship body pipe tunnel in a welding or other connection mode; the inner wall of the cylinder 6 is provided with a stainless steel guard ring 7 corresponding to the mounting position of the propeller 4.
In this embodiment, the cylinder 6 is used to mount the entire propulsion system on the hull; the inner wall of cylinder 6 is equipped with stainless steel guard ring 7 corresponding to the mounted position of screw 4, and in the course of work of screw 4, circular guard ring 7 is used for preventing that cylinder 6 corresponds the vacuole of position department inner wall and denudates.
Furthermore, a plurality of mounting rib plates 8 are fixed on the outer wall of the cylinder body 6, and the mounting rib plates 8 fix the propulsion system on the ship body through welding or other connection modes.
Further, the propeller shaft 3 is fixedly connected with the corresponding propeller 4 through a taper or a flange.
The utility model discloses a theory of operation and use flow: the utility model discloses install the back, with driving bevel gear axle 1 and connecting outside power unit, when driving bevel gear axle 1 is rotatory, two 4 relative rotations of screw, form contra-rotating oar side direction advancing device, when needs change thrust size, the input rotational speed of adjustment source power can, when needs change thrust direction, need change the input direction of rotation of motive power, two screws 4 all rotate to opposite direction this moment, two screws 4's hydrodynamic force characteristic is unanimous, thrust size when the reversal is the same with the corotation.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a novel to changeing oar boats and ships lateral propulsion system which characterized in that: comprises a driving bevel gear shaft (1) and a contra-rotating propeller mechanism consisting of two driven bevel gears (2), two propeller shafts (3) and two propellers (4); the driving bevel gears at the lower ends of the driving bevel gear shafts (1) are meshed with the two driven bevel gears (2), the two driven bevel gears (2) are symmetrically arranged on two sides of the lower ends of the driving bevel gear shafts (1), the two driven bevel gears (2) are respectively and fixedly connected with one end of each corresponding propeller shaft (3), and the other end of each propeller shaft (3) is fixedly connected with the corresponding propeller (4).
2. A novel contra-rotating ship lateral propulsion system as claimed in claim 1, wherein: the two propellers (4) have the same design parameters, the same diameter and the same rotating speed; when the device works, the rotating directions are opposite, and the device can send out the same thrust in forward rotation and reverse rotation.
3. A novel contra-rotating ship lateral propulsion system as claimed in claim 1, wherein: the system further comprises a gear box body (5), the gear box body (5) is sleeved on the outer sides of the propeller shaft (3) and the driven bevel gear (2), the two ends of the gear box body (5) are rotatably connected with the propeller shaft (3), and an opening for the driving bevel gear shaft (1) to extend into is formed in the top of the gear box body (5).
4. A novel contra-rotating ship lateral propulsion system according to claim 3, characterized in that: the system further comprises a cylinder body (6), the cylinder body (6) is sleeved on the outer sides of the propellers (4) and the gear box body (5) and fixedly connected with the gear box body (5), the two sides of the cylinder body (6) are water conveying ports corresponding to the two propellers (4) respectively, and the two ends of the cylinder body (6) are connected with the ship body pipe tunnel through welding or other connection modes.
5. A novel contra-rotating ship lateral propulsion system according to claim 4, characterized in that: and a stainless steel protective ring (7) is arranged on the inner wall of the cylinder body (6) corresponding to the mounting position of the propeller (4).
6. A novel contra-rotating ship lateral propulsion system according to claim 4, characterized in that: the outer wall of the cylinder body (6) is fixedly provided with a plurality of mounting rib plates (8), and the mounting rib plates (8) fix the propulsion system on the ship body in a welding or other connection mode.
7. A novel contra-rotating ship lateral propulsion system according to claim 4, characterized in that: the propeller shaft (3) is fixedly connected with the corresponding propeller (4) through taper or a flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921102626.8U CN210618432U (en) | 2019-07-15 | 2019-07-15 | Novel contra-rotating propeller ship lateral propulsion system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921102626.8U CN210618432U (en) | 2019-07-15 | 2019-07-15 | Novel contra-rotating propeller ship lateral propulsion system |
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| CN210618432U true CN210618432U (en) | 2020-05-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110316345A (en) * | 2019-07-15 | 2019-10-11 | 南京高精船用设备有限公司 | It is a kind of novel to turning the lateral propulsion system of propeller ship |
| CN113353221A (en) * | 2021-07-14 | 2021-09-07 | 周新风 | Propeller capable of enabling ship body to be more stable during ship turning |
-
2019
- 2019-07-15 CN CN201921102626.8U patent/CN210618432U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110316345A (en) * | 2019-07-15 | 2019-10-11 | 南京高精船用设备有限公司 | It is a kind of novel to turning the lateral propulsion system of propeller ship |
| CN113353221A (en) * | 2021-07-14 | 2021-09-07 | 周新风 | Propeller capable of enabling ship body to be more stable during ship turning |
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