WO2019010651A1 - 一种防缠绕的挖泥船用螺旋桨 - Google Patents

一种防缠绕的挖泥船用螺旋桨 Download PDF

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Publication number
WO2019010651A1
WO2019010651A1 PCT/CN2017/092637 CN2017092637W WO2019010651A1 WO 2019010651 A1 WO2019010651 A1 WO 2019010651A1 CN 2017092637 W CN2017092637 W CN 2017092637W WO 2019010651 A1 WO2019010651 A1 WO 2019010651A1
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cutting edge
hub
cutting
blade
gear box
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PCT/CN2017/092637
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English (en)
French (fr)
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顾建磊
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顾建磊
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Priority to PCT/CN2017/092637 priority Critical patent/WO2019010651A1/zh
Publication of WO2019010651A1 publication Critical patent/WO2019010651A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B63H1/18—Propellers with means for diminishing cavitation, e.g. supercavitation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B63H1/28—Other means for improving propeller efficiency
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/16—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in recesses; with stationary water-guiding elements; Means to prevent fouling of the propeller, e.g. guards, cages or screens

Definitions

  • the present invention relates to a propeller, and more particularly to an anti-winding dredger propeller.
  • the structure is generally a labyrinth seal. Although the clearance is small, the propeller needs to rotate forward and reverse during operation. Sometimes the fishing net will entangle and enter it, and the seal will be destroyed. The propeller has failed.
  • hub vortex cavitation reduces the efficiency of the ship's propeller and causes vibration and noise at the propeller.
  • concentration of hub vortex cavitation may cause cavitation at the rudder.
  • an anti-winding dredger propeller comprising a gearbox coupled to a hull, rotating a hub disposed on the gearbox, at least one end of the gearbox disposed adjacent to an edge of the hub a first cutting blade, one end of the first cutting blade is fixedly disposed on the hub, and the other end is provided with three cutting edges, respectively being a first cutting edge, a second cutting edge and a third cutting edge, wherein the first cutting edge is located at the end of the first cutting blade and The second cutting edge and the third cutting edge are respectively located on both sides of the first cutting blade and adjacent to the first cutting edge, and the second cutting edge and the third cutting edge are in a zigzag structure; the hub is provided with a hub cap away from the end of the gear box.
  • the hub cap is uniformly provided with a plurality of fins along the periphery, and the fins are arranged in a spiral form along the periphery of the hub cap, and the end portions of each fin are provided with end plates, and the end plates and the fins form a T-shaped structure, and the fins are close to the gears.
  • the height of one side of the case is smaller than the height of the fin away from one side of the gear case.
  • the invention provides a cutter having three cutting edges at the gap between the propeller and the gear box, and can cut the object wound thereon under the arbitrary rotation mode of the propeller; in addition, the hub vortex cavitation and the rudder can be reduced The cavitation phenomenon, the fin can bring auxiliary propulsion in addition to the propeller propulsion, thereby further improving the propulsion efficiency.
  • At least one second cutting blade is disposed at one end of the slurry hub near the gear box, the fourth cutting blade is provided with a fourth cutting edge, a fifth cutting edge and a sixth cutting edge, and the fourth cutting edge is disposed on the second cutting blade.
  • the end portion is convexly curved, and the fifth cutting edge and the sixth cutting edge are respectively located on both sides of the second cutting blade and adjacent to the fourth cutting edge, and the fifth cutting edge and the sixth cutting edge have a sawtooth structure.
  • the fourth cutting edge and the first cutting edge are in the same plane. Therefore, the efficiency of cutting the winding is improved by the cooperation of the first cutting blade and the second cutting blade.
  • Figure 1 is a schematic view showing the structure of a first embodiment of an anti-winding dredger propeller according to the present invention
  • FIG. 2 is a schematic structural view of a first cutting blade of a propeller for an anti-winding dredger according to the present invention
  • Figure 3 is a schematic view showing the structure of a second embodiment of an anti-winding dredger propeller according to the present invention.
  • FIG. 4 is a schematic structural view of a second cutting blade of a propeller for anti-winding dredger according to the present invention.
  • Fig. 5 is a schematic view showing the structure of a fin of a propeller for an anti-winding dredger according to the present invention.
  • an anti-winding dredger propeller includes a gearbox 1 connected to the hull, and a hub 2 disposed on the gearbox 1 through a rotating shaft, one end of the gearbox 1 and close to the paddle
  • the edge of the hub 2 is provided with at least one first cutting blade 3.
  • the number of the first cutting blades 3 is three, one end of the first cutting blade 3 is embedded in the hub 2, and the other end is integrally formed with three.
  • the cutting edge is a first cutting edge 31, a second cutting edge 32, and a third cutting edge 33.
  • the first cutting edge 31 is located at the end of the first cutting blade 3 and has a convex arc shape.
  • the second cutting edge 32 and the third cutting edge 33 are respectively located at the first cutting edge. Both sides of the cutting blade 3 are adjacent to the first cutting edge 31, and the second cutting edge 32 and the third cutting edge 33 have a zigzag structure.
  • the first cutting blade 3 provided with three cutting edges can effectively cut the winding wound between the hub 2 and the gear case 1.
  • At least one second cutting blade 4 may be provided at the end of the hub 2 near the gear case 1, and in the present embodiment, the number of the second cutting blades 4 is three.
  • One end of the second cutting blade 4 is screwed onto the circumferential surface of the hub 2, and the other end is integrally formed with a fourth cutting edge 41, a fifth cutting edge 42 and a sixth cutting edge 43.
  • the fourth cutting edge 41 is disposed on the second cutting blade 4.
  • the end portion is convexly curved, and the fifth cutting edge 42 and the sixth cutting edge 43 are respectively located on both sides of the second cutting blade 4 and adjacent to the fourth cutting edge 41.
  • the fifth cutting edge 42 and the sixth cutting edge 43 have a zigzag structure.
  • the second cutting blade can effectively cut the winding by the rotational force of the hub 2.
  • the hub 2 is provided with a hub cap 5 away from the end of the gear box 1, and the hub cap 5 is evenly distributed with a plurality of fins 51 along the periphery, and the fins 51 are arranged in a spiral form along the periphery of the hub cap 5.
  • the end of each of the fins 51 is provided with an end plate 52, and the end plate 52 and the fin 51 form a T-shaped structure.
  • the end plate 52 is formed on the end of the fin 51, and the end plate 52 functions to prevent fluid flow, which is on the front (propeller side) surface and the rear (rudder side) surface of the fin 51, that is, the pressure surface 511 and suction. A pressure differential is maintained between faces 512. Further, the pressure drop of the suction surface 512 is relatively reduced, and a relatively high pressure is formed on the pressure surface 511, thereby improving the propulsion efficiency.
  • the height of the fin 51 near the one side of the gear case 1 is smaller than the height of the fin 51 away from the one side of the gear case 1, and therefore, the fluid does not enter from the outside of the fin 51, but passes through the surface of the fin 51 while moving. The gradually increasing area is thereby decelerated by the end plate 52.
  • the present invention provides a cutter having three cutting edges at the gap between the propeller and the gear box, and can cut the object wound thereon in the arbitrary rotation mode of the propeller; in addition, the hub vortex can be reduced.
  • the cavitation phenomenon of the rudder is reduced and reduced, and the fins can provide auxiliary propulsion in addition to the propulsion of the propeller, thereby further improving the propulsion efficiency.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种防缠绕的挖泥船用螺旋桨，包括与船体连接的齿轮箱(1)，转动设置在齿轮箱(1)上的桨毂(2)，齿轮箱(1)的一端且靠近桨毂(2)的边缘设置有至少一个第一切割刀(3)，第一切割刀(3)一端固定设置在齿轮箱(1)上，另一端设置有三个刀刃(31,32,33)；桨毂(2)远离齿轮箱(1)的端部设有毂帽(5)，毂帽(5)沿周边均布有多个鳍(51)，鳍(51)以螺旋形式沿着毂帽(5)的周边设置，每个鳍(51)的端部均设置有端板(52)。该螺旋桨能够在任意转动方式的情况下割断缠绕在上面的物体，还能够降低毂涡空化和减少船舵的空蚀现象，鳍(51)可以带来除螺旋桨的推进之外的辅助的推进，进一步提高推进效率。

Description

一种防缠绕的挖泥船用螺旋桨 技术领域
本发明涉及螺旋桨，尤其涉及一种防缠绕的挖泥船用螺旋桨。
背景技术
螺旋桨和齿轮箱之间存在一道间隙，其结构一般为迷宫式密封，虽然间隙很小，但是螺旋桨在工作时候需要正转、反转，有时候渔网还是会缠绕并进入其中，并破坏密封，导致螺旋桨发生故障。
此外，当螺旋桨旋转时，在螺旋桨的桨毂的后面产生了强的毂涡空化。毂涡空化的集中会降低船舶螺旋桨的效率，并且引起螺旋桨处的振动和噪音。此外，毂涡空化的集中可能会在船舵处引起空蚀。
发明内容
本发明的目的是在于提供一种防缠绕的挖泥船用螺旋桨，解决上述现有技术问题中的一个或者多个。
根据本发明的一个方面，提供一种防缠绕的挖泥船用螺旋桨，包括与船体连接的齿轮箱，转动设置在齿轮箱上的桨毂，齿轮箱的一端且靠近桨毂的边缘设置有至少一个第一切割刀，第一切割刀一端固定设置在桨毂上，另一端设置有三个刀刃，分别为第一刀刃、第二刀刃、第三刀刃，第一刀刃位于第一切割刀的端部且呈凸弧状，第二刀刃、第三刀刃分别位于第一切割刀的两侧且靠近第一刀刃，第二刀刃和第三刀刃呈锯齿状结构；桨毂远离齿轮箱的端部设有毂帽，毂帽沿周边均布有多个鳍，鳍以螺旋形式沿着毂帽的周边设置，每个鳍的端部均设置有端板，端板与鳍之间形成T形结构，鳍靠近齿轮箱的一边侧的高度小于鳍远离齿轮箱的一边侧的高度。
本发明通过在螺旋桨和齿轮箱的间隙处设置了具有三个刃口的割刀，能够螺旋桨任意转动方式的情况下割断缠绕在上面的物体；此外，还能够降低毂涡空化和减少船舵的空蚀现象，鳍可以带来除螺旋桨的推进之外的辅助的推进，从而进一步提高了推进效率。
在一些实施方式中：浆毂靠近齿轮箱的一端设置至少一个第二切割刀，第二切割刀一端设有第四刀刃、第五刀刃和第六刀刃，第四刀刃设置于第二切割刀的端部且呈凸弧状，第五刀刃和第六刀刃分别位于第二切割刀的两侧且靠近第四刀刃，第五刀刃和第六刀刃呈锯齿状结构。由此，通过设 置第二切割刀，能够更好的割断缠绕在上面的物体。
在一些实施方式中：当第二切割刀旋转至最靠近第一切割刀时，第四刀刃和第一刀刃位于同一平面。由此，通过第一切割刀和第二切割刀的配合，提高了割断缠绕物的效率。
附图说明
图1是本发明一种防缠绕的挖泥船用螺旋桨的第一实施例的结构示意图；
图2是本发明一种防缠绕的挖泥船用螺旋桨的第一切割刀的结构示意图；
图3是本发明一种防缠绕的挖泥船用螺旋桨的第二实施例的结构示意图；
图4是本发明一种防缠绕的挖泥船用螺旋桨的第二切割刀的结构示意图；
图5是本发明一种防缠绕的挖泥船用螺旋桨的鳍的结构示意图。
具体实施方式
下面结合附图说明，对本发明作进一步详细说明。
如图1和图2所示，一种防缠绕的挖泥船用螺旋桨，包括与船体连接的齿轮箱1，通过转轴转动设置在齿轮箱1上的桨毂2，齿轮箱1的一端且靠近桨毂2的边缘设置有至少一个第一切割刀3，在本实施例中第一切割刀3的数量为3个，第一切割刀3一端嵌设于桨毂2内，另一端一体成型有三个刀刃，分别为第一刀刃31、第二刀刃32、第三刀刃33，第一刀刃31位于第一切割刀3的端部且呈凸弧状，第二刀刃32、第三刀刃33分别位于第一切割刀3的两侧且靠近第一刀刃31，第二刀刃32和第三刀刃33呈锯齿状结构。设有三个刀刃的第一切割刀3能够有效的割断缠绕在浆毂2与齿轮箱1之间的缠绕物。
此外，如3和图4所示，浆毂2靠近齿轮箱1的一端还可以设置至少一个第二切割刀4，在本实施了中第二切割刀4的数量为3个。第二切割刀4的一端螺接在浆毂2的环周面上，另一端一体成型有第四刀刃41、第五刀刃42和第六刀刃43，第四刀刃41设置于第二切割刀4的端部且呈凸弧状，第五刀刃42和第六刀刃43分别位于第二切割刀4的两侧且靠近第四刀刃41，第五刀刃42和第六刀刃43呈锯齿状结构。第二切割刀可以通过浆毂2的旋转力，有效的切割缠绕物。
其中，当第二切割刀4旋转至最靠近第一切割刀3时，第四刀刃41 和第一刀刃31位于同一平面，此时，第四刀刃41与第一刀刃31之间保留一个缝隙。如此，通过第一切割刀3和第二切割刀4的配合，能够更好的割断缠绕物。
此外，如图5所示，桨毂2远离齿轮箱1的端部设有毂帽5，毂帽5沿周边均布有多个鳍51，鳍51以螺旋形式沿着毂帽5的周边设置，每个鳍51的端部均设置有端板52，端板52与鳍51之间形成T形结构。当螺旋桨旋转时，即使发生了毂涡空化，鳍51的端板52可以解决毂涡空化的集中，从而减少由毂涡空化引起的船舵的空蚀现象。端板52形成在鳍51的端部上，并且端板52起到阻止流体流动的作用，这在鳍51的前(螺旋桨侧)表面与后(船舵侧)表面，即压力面511和吸力面512之间保持了压力差。此外，吸力面512的压降相对减小，并且在压力面511上形成相对较高的压力，从而提高了推进效率。鳍51靠近齿轮箱1的一边侧的高度小于鳍51远离齿轮箱1的一边侧的高度，因此，流体不会从鳍51的外侧进入，而是会在鳍51的表面上移动的同时穿过逐渐增大的区域，从而通过端板52使流体减速。
综上所述，本发明通过在螺旋桨和齿轮箱的间隙处设置了具有三个刃口的割刀，能够螺旋桨任意转动方式的情况下割断缠绕在上面的物体；此外，还能够降低毂涡空化和减少船舵的空蚀现象，鳍可以带来除螺旋桨的推进之外的辅助的推进，从而进一步提高了推进效率。
以上所述仅是本发明的一种实施方式，应当指出，对于本领域普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出若干相似的变形和改进，这些也应视为本发明的保护范围之内。

Claims (3)

  1. 一种防缠绕的挖泥船用螺旋桨，其特征在于：包括与船体连接的齿轮箱(1)，转动设置在所述齿轮箱(1)上的桨毂(2)，所述齿轮箱(1)的一端且靠近所述桨毂(2)的边缘设置有至少一个第一切割刀(3)，所述第一切割刀(3)一端固定设置在所述桨毂(2)上，另一端设置有三个刀刃，分别为第一刀刃(31)、第二刀刃(32)、第三刀刃(33)，所述第一刀刃(31)位于所述第一切割刀(3)的端部且呈凸弧状，所述第二刀刃(32)、所述第三刀刃(33)分别位于所述第一切割刀(3)的两侧且靠近所述第一刀刃(31)，所述第二刀刃(32)和第三刀刃(33)呈锯齿状结构；所述桨毂(2)远离所述齿轮箱(1)的端部设有毂帽(5)，所述毂帽(5)沿周边均布有多个鳍(51)，所述鳍(51)以螺旋形式沿着毂帽(5)的周边设置，每个鳍(51)的端部均设置有端板(52)，所述端板(52)与所述鳍(51)之间形成T形结构，所述鳍(51)靠近所述齿轮箱(1)的一边侧的高度小于所述鳍(51)远离齿轮箱(1)的一边侧的高度。
  2. 如权利要求1所述的一种防缠绕的挖泥船用螺旋桨，其特征在于：所述浆毂(2)靠近所述齿轮箱(1)的一端设置至少一个第二切割刀(4)，所述第二切割刀(4)一端设有第四刀刃(41)、第五刀刃(42)和第六刀刃(43)，所述第四刀刃(41)设置于所述第二切割刀(4)的端部且呈凸弧状，所述第五刀刃(42)和第六刀刃(43)分别位于所述第二切割刀(4)的两侧且靠近所述第四刀刃(41)，所述第五刀刃(42)和第六刀刃(43)呈锯齿状结构。
  3. 如权利要求2所述的一种防缠绕的挖泥船用螺旋桨，其特征在于：当所述第二切割刀(4)旋转至最靠近所述第一切割刀(3)时，所述第四刀刃(41)和所述第一刀刃(31)位于同一平面。
PCT/CN2017/092637 2017-07-12 2017-07-12 一种防缠绕的挖泥船用螺旋桨 WO2019010651A1 (zh)

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CN103857589A (zh) * 2012-09-13 2014-06-11 现代重工业株式会社 具有鳍的螺旋桨毂帽
CN203958584U (zh) * 2014-08-18 2014-11-26 扬帆集团股份有限公司 一种船舶艉轴的防缠绕装置
CN204433006U (zh) * 2015-02-04 2015-07-01 浙江舟山博斯特船舶设计研究院有限公司 一种船舶螺旋桨的防缠绕装置
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4450670A (en) * 1980-02-15 1984-05-29 Robinson Richard L Weed cutter for boat motor
CN103857589A (zh) * 2012-09-13 2014-06-11 现代重工业株式会社 具有鳍的螺旋桨毂帽
CN203958584U (zh) * 2014-08-18 2014-11-26 扬帆集团股份有限公司 一种船舶艉轴的防缠绕装置
CN204433006U (zh) * 2015-02-04 2015-07-01 浙江舟山博斯特船舶设计研究院有限公司 一种船舶螺旋桨的防缠绕装置
CN204846334U (zh) * 2015-06-26 2015-12-09 江苏省通沙汽车轮渡管理处 一种舵桨防缠绕装置

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