CN216269849U

CN216269849U - Contra-rotating steering oar assembly and ship

Info

Publication number: CN216269849U
Application number: CN202122952983.7U
Authority: CN
Inventors: 皮志达; 舒永东; 常晓雷; 常江; 柳德君; 林富华; 许兆林
Original assignee: Nanjing High Accurate Marine Equipment Co Ltd
Current assignee: Nanjing High Accurate Marine Equipment Co Ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-04-12
Anticipated expiration: 2031-11-29

Abstract

The utility model relates to the technical field of ship engineering and discloses a contra-rotating rudder propeller assembly and a ship. The contra-rotating steering oar assembly comprises a gear box body, an input gear shaft and a driven gear shaft, wherein a first annular clamping seat and a second annular clamping seat are arranged on the inner wall of the gear box body at intervals; the input gear shaft is arranged on the first annular clamping seat and the second annular clamping seat in a penetrating way and can be rotatably arranged on the first annular clamping seat and the second annular clamping seat, and one end part of the input gear shaft is provided with a bevel gear part; the two driven gear shafts are symmetrically arranged on two sides of the input gear shaft, one end of each driven gear shaft is provided with a bevel gear, the other end of each driven gear shaft is provided with a paddle wing, and the bevel gears of the two driven gear shafts are connected to the bevel gear parts in a meshed mode. The double-propeller blades work simultaneously, and can bear larger propelling power; the size of the lower gear box is reduced, and the water flow resistance is reduced; moreover, when the propeller is propelled, the rear propeller can absorb the rotation function loss of the wake flow of the front propeller, and the thrust loss is greatly reduced.

Description

Contra-rotating steering oar assembly and ship

Technical Field

The utility model relates to the technical field of ship engineering, in particular to a contra-rotating rudder propeller assembly and a ship.

Background

With the development of exploration and exploitation of marine resources to deep sea, large marine platforms and ships with large towing force and high navigational speed are urgently needed. The power requirement of a propulsion system of a ship is getting bigger and bigger, and a propulsion device is developed towards a large-size ship. The rudder propeller integrates a propelling function and a steering function, is widely applied to various high-technology ships and high-end marine engineering equipment at present, is a core matching component of the high-technology ships and the marine engineering equipment, and the quality of the performance of the rudder propeller directly influences the usability, reliability and economy of the ships and the marine engineering equipment.

The ship is limited by a hull structure, particularly for ships sailing at high sailing speed and shallow water areas, the overall size and the diameter of a propeller of the rudder propeller are limited, but the power requirement of the rudder propeller is higher and higher in consideration of the requirement of ship control on the hydrodynamic force of the rudder propeller. Along with the increase of power, the sizes of all transmission parts of the lower gearbox of the conventional rudder propeller, particularly the size of an output bevel gear are correspondingly increased, so that the size of the lower gearbox body is increased, the water flow resistance of the lower gearbox body is increased, and the exertion of thrust is influenced.

Accordingly, there is a need for a contra-rotating rudder propeller assembly and a ship to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Based on the above, the utility model aims to provide a contra-rotating rudder propeller assembly and a ship, which can bear larger propelling power, reduce the size of a lower gear box and reduce water flow resistance.

In order to achieve the purpose, the utility model adopts the following technical scheme:

in one aspect, there is provided a contra-rotating rudder propeller assembly comprising:

the gear box comprises a gear box body, wherein a first annular clamping seat and a second annular clamping seat are arranged on the inner wall of the gear box body at intervals;

the input gear shaft penetrates through the first annular clamping seat and is rotatably installed on the second annular clamping seat, and one end part of the input gear shaft is provided with a bevel gear part;

the two driven gear shafts are symmetrically arranged on two sides of the input gear shaft, one end of each driven gear shaft is provided with a bevel gear, the other end of each driven gear shaft is provided with a paddle wing, and the bevel gears of the two driven gear shafts are connected to the bevel gear parts in a meshed mode.

As a preferred technical scheme of the contra-rotating steering oar assembly, an input bearing seat is installed on the first annular clamping seat, and a first bearing and a second bearing are arranged on the input bearing seat at intervals;

a third bearing is arranged on the second annular clamping seat;

the input gear shaft penetrates through and is fixed on the inner rings of the first bearing, the second bearing and the third bearing.

As an optimal technical scheme for the contra-rotating steering oar assembly, the input bearing seat is provided with a fixing part, and the fixing part is lapped and fixed on the side wall of the first annular clamping seat through a locking part.

As an optimal technical scheme for the contra-rotating rudder propeller assembly, a first adjusting shim is arranged between the fixing part and the side wall of the first annular clamping seat, and the first adjusting shim is used for adjusting the position of the input bearing seat relative to the first annular clamping seat along the axis direction of the input gear shaft.

As a preferred technical scheme of the contra-rotating steering oar assembly, a first space ring is arranged between the first bearing and the second bearing.

As an optimal technical scheme for the contra-rotating steering oar assembly, the contra-rotating steering oar assembly further comprises two output bearing seats, the output bearing seats are fixed in the gear box body, and the two driven gear shafts are respectively and rotatably arranged on the two output bearing seats through bearings.

As a preferred technical solution for the contra-rotating rudder propeller assembly, a second adjusting shim is arranged between the end of the output bearing seat and the outer wall of the second annular clamping seat, and the second adjusting shim is used for adjusting the position of the output bearing seat relative to the second annular clamping seat along the axis direction of the driven gear shaft.

As an optimal technical scheme for the contra-rotating steering oar assembly, a fourth bearing and a fifth bearing are arranged on the output bearing seat at intervals, and the driven gear shaft penetrates through and is fixed to inner rings of the fourth bearing and the fifth bearing.

As a preferred technical scheme of the contra-rotating steering oar assembly, a second spacer ring is arranged between the fourth bearing and the fifth bearing.

In another aspect, a ship is provided, which includes the contra-rotating rudder propeller assembly in any one of the above aspects.

The utility model has the beneficial effects that:

the utility model provides a contra-rotating steering oar assembly, when in propulsion, an input gear shaft is driven to rotate, the input gear shaft transmits torque to a driven gear shaft through a bevel gear part and bevel gears, the two driven bevel gears have the same rotating speed and opposite rotating directions under the drive of the input gear shaft, the power of a steering oar is distributed to two oar wings, the load of a single oar wing is reduced, and under the condition that the integral size of the contra-rotating steering oar assembly and the diameter size of the oar wings are limited, the two oar wings work simultaneously, and can bear larger propulsion power; secondly, as the load of a single propeller wing is reduced, the size of an internal transmission part of the lower gear box can be correspondingly reduced, so that the size of the lower gear box is reduced, and the water flow resistance of the lower gear box is reduced; moreover, when the propeller is propelled, the rear propeller can absorb the rotation function loss of the wake flow of the front propeller, and the thrust loss is greatly reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a contra-rotating rudder propeller assembly according to an embodiment of the present invention.

The figures are labeled as follows:

10. a gear housing; 101. a first annular cassette; 102. a second annular card holder; 20. an input gear shaft; 201. a bevel gear portion; 30. a driven gear shaft; 301. a bevel gear; 40. an input bearing seat; 401. a fixed part; 50. a first bearing; 60. a second bearing; 70. a third bearing; 80. a spacer ring; 90. a first space ring; 100. a first adjustment pad; 110. an output bearing seat; 120. a fourth bearing; 130. a fifth bearing; 140. a second space ring; 150. a second adjustment pad; 160. and a seal.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1, the present embodiment provides a ship including a contra-rotating rudder propeller assembly including a gear housing 10, an input gear shaft 20, and two driven gear shafts 30.

Specifically, a first annular clamping seat 101 and a second annular clamping seat 102 are arranged on the inner wall of the gear box body 10 at intervals; the input gear shaft 20 is arranged on the first annular clamping seat 101 and the second annular clamping seat 102 in a penetrating and rotatable mode, and one end portion of the input gear shaft 20 is provided with a bevel gear portion 201; the two driven gear shafts 30 are symmetrically arranged on both sides of the input gear shaft 20, one end of each driven gear shaft 30 is provided with a bevel gear 301, the other end of each driven gear shaft 30 is provided with a paddle, and the bevel gears 301 of the two driven gear shafts 30 are in meshing connection with the bevel gear parts 201. In this embodiment, one end of the input gear shaft 20, which is away from the bevel gear portion 201, is splined to a driving shaft of a motor, and the motor can drive the input gear shaft 20 to rotate.

When the propeller is propelled, the input gear shaft 20 is driven to rotate, the input gear shaft 20 transmits torque to the driven gear shaft 30 through the bevel gear part 201 and the bevel gears 301, the two driven bevel gears 301 are driven by the input gear shaft 20, the rotating speeds are the same, the rotating directions are opposite, the power of the steering oar is distributed to the two oar wings, the load of a single oar wing is reduced, and under the condition that the whole size of a contra-rotating steering oar assembly and the diameter size of the oar wings are limited, the double oar wings work simultaneously, and can bear larger propelling power; secondly, as the load of a single propeller wing is reduced, the size of an internal transmission part of the lower gear box can be correspondingly reduced, so that the size of the lower gear box is reduced, and the water flow resistance of the lower gear box is reduced; moreover, when the propeller is propelled, the rear propeller can absorb the rotation function loss of the wake flow of the front propeller, and the thrust loss is greatly reduced.

Further, an input bearing seat 40 is mounted on the first annular clamping seat 101, and a first bearing 50 and a second bearing 60 are arranged on the input bearing seat 40 at intervals; the second annular clamping seat 102 is provided with a third bearing 70; the input gear shaft 20 is inserted and fixed on the inner rings of the first bearing 50, the second bearing 60 and the third bearing 70, so that the input gear shaft 20 can be rotatably fixed in the gear housing 10.

Preferably, the input bearing seat 40 is provided with a fixing portion 401, and the fixing portion 401 overlaps and is fixed on the side wall of the first annular clamping seat 101 through a locking member, in this embodiment, the locking member is a bolt, so that the input bearing seat 40 is fixed on the first annular clamping seat 101. Further preferably, a first adjusting shim 100 is arranged between the fixing portion 401 and a side wall of the first annular clamping seat 101, and the position of the input bearing seat 40 relative to the first annular clamping seat 101 along the axial direction of the input gear shaft 20 is adjusted by adjusting the thickness of the first adjusting shim 100, so as to adjust the position of the bevel gear portion 201 to meet the assembling precision.

Further preferably, in the present embodiment, the first bearing 50 is a tapered roller bearing, the second bearing 60 is a spherical roller thrust bearing, and the third bearing 70 is a spherical roller bearing. In this embodiment, the input gear shaft 20 is provided with a first step, the bottom end of the second bearing 60 is abutted against the first step through the spacer ring 80, and the top end of the second bearing 60 is abutted against the input bearing seat 40. The assembling position between the input gear shaft 20 and the input bearing housing 40 can be adjusted by the spacer ring 80, and the assembling precision of the input gear shaft 20 is improved.

Preferably, a first spacer 90 is disposed between the first bearing 50 and the second bearing 60, and the first spacer 90 is used for precisely controlling the axial distance between the first bearing 50 and the second bearing 60.

Further, the contra-rotating rudder propeller assembly further comprises two output bearing seats 110, the output bearing seats 110 are fixed in the gearbox body 10, and the two driven gear shafts 30 are respectively rotatably installed on the two output bearing seats 110 through bearings, so that the installation stability of the driven gear shafts 30 is improved.

A second adjusting shim 150 is arranged between the end of the output bearing seat 110 and the outer wall of the second annular clamping seat 102, and the second adjusting shim 150 is used for adjusting the position of the output bearing seat 110 relative to the second annular clamping seat 102 along the axial direction of the driven gear shaft 30. By adjusting the thickness of the second adjustment shim 150, the position of the driven gear shaft 30 is adjusted, and the mounting accuracy of the driven gear shaft 30 is improved.

The output bearing housing 110 is provided with a fourth bearing 120 and a fifth bearing 130 at an interval, and the driven gear shaft 30 is inserted and fixed to inner rings of the fourth bearing 120 and the fifth bearing 130. In the embodiment, the fourth bearing 120 and the fifth bearing 130 are tapered roller bearings, so that on one hand, the driven gear shaft 30 can be rotatably mounted on the output bearing seat 110; and on the other hand, the rotation stability of the output bearing seat 110 is improved.

It is further preferable that a second spacer 140 is disposed between the fourth bearing 120 and the fifth bearing 130, and the second spacer 140 is used for precisely controlling the axial distance between the fourth bearing 120 and the fifth bearing 130.

It should be noted that, a sealing member 160 is further installed at one end of the two driven gear shafts 30 away from the bevel gear 301, the sealing member 160 is fixed on the output bearing seat 110 through a screw, and a rotary oil seal is arranged between the sealing member 160 and the driven gear shaft 30, so as to seal the gear box 10.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A contra-rotating steering oar assembly, comprising:

the gear box comprises a gear box body (10), wherein a first annular clamping seat (101) and a second annular clamping seat (102) are arranged on the inner wall of the gear box body (10) at intervals;

the input gear shaft (20) is arranged in a penetrating manner and is rotatably installed on the first annular clamping seat (101) and the second annular clamping seat (102), and one end part of the input gear shaft (20) is provided with a bevel gear part (201);

the two driven gear shafts (30) are symmetrically arranged on two sides of the input gear shaft (20), one end of each driven gear shaft (30) is provided with a bevel gear (301), the other end of each driven gear shaft is provided with a paddle wing, and the bevel gears (301) of the two driven gear shafts (30) are connected to the bevel gear parts (201) in a meshed mode.

2. The contra-rotating steering oar assembly according to claim 1, wherein the first annular clamping seat (101) is provided with an input bearing seat (40), and the input bearing seat (40) is provided with a first bearing (50) and a second bearing (60) at intervals;

a third bearing (70) is arranged on the second annular clamping seat (102);

the input gear shaft (20) penetrates through and is fixed on inner rings of the first bearing (50), the second bearing (60) and the third bearing (70).

3. Contra-rotating rudder propeller assembly according to claim 2, characterised in that the input bearing block (40) is provided with a fixing portion (401), the fixing portion (401) overlapping and being fixed on the side wall of the first annular cassette (101) by means of a locking member.

4. The contra-rotating steering oar assembly according to claim 3, wherein a first adjusting shim (100) is arranged between the fixing portion (401) and the side wall of the first annular clamping seat (101), and the first adjusting shim (100) is used for adjusting the position of the input bearing seat (40) relative to the first annular clamping seat (101) along the axial direction of the input gear shaft (20).

5. Contra-rotating rudder propeller assembly according to claim 2, characterised in that a first spacer ring (90) is arranged between the first bearing (50) and the second bearing (60).

6. The contra-rotating steering oar assembly according to any one of claims 1 to 5, further comprising two output bearing seats (110), wherein the output bearing seats (110) are fixed in the gear box body (10), and the two driven gear shafts (30) are respectively rotatably mounted on the two output bearing seats (110) through bearings.

7. The contra-rotating steering oar assembly according to claim 6, wherein a second adjusting shim (150) is arranged between the end of the output bearing seat (110) and the outer wall of the second annular clamping seat (102), and the second adjusting shim (150) is used for adjusting the position of the output bearing seat (110) relative to the second annular clamping seat (102) along the axial direction of the driven gear shaft (30).

8. The contra-rotating steering oar assembly according to claim 6, wherein the output bearing seat (110) is provided with a fourth bearing (120) and a fifth bearing (130) at intervals, and the driven gear shaft (30) is arranged through and fixed on inner rings of the fourth bearing (120) and the fifth bearing (130).

9. Contra-rotating rudder propeller assembly according to claim 8, characterised in that a second spacer ring (140) is arranged between the fourth bearing (120) and the fifth bearing (130).

10. A vessel comprising a contra-rotating rudder propeller assembly according to any one of claims 1 to 9.