CN217260618U

CN217260618U - Special detachable propeller for icebreaker

Info

Publication number: CN217260618U
Application number: CN202220816215.0U
Authority: CN
Inventors: 杨泽滨; 温道能; 张丁标; 段仲兵; 陈志宇; 程筠; 黄耀华
Original assignee: CSSC Huangpu Wenchong Shipbuilding Co Ltd
Current assignee: CSSC Huangpu Wenchong Shipbuilding Co Ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-08-23
Anticipated expiration: 2032-04-11

Abstract

The utility model provides a dedicated removable propeller of icebreaker, including cylindric distance oar hub, a plurality of distance oar blades pass through fastener detachably and connect on the distance oar hub, it is a plurality of the distance paddle piece is for the center pin central symmetry of distance oar hub. When the propeller of the icebreaker is damaged in severe and complex environments during working, the propeller can be replaced or repaired quickly and efficiently, the safety and the vitality of the icebreaker are improved, the construction surface is reduced, the construction strength is reduced, the skill requirement of constructors is reduced, the maintenance period is shortened, and the cost is saved.

Description

Special detachable propeller for icebreaker

Technical Field

The utility model belongs to the technical field of boats and ships, concretely relates to dedicated removable propeller of icebreaker.

Background

With the trend of global warming becoming more obvious, the arctic route which is known as the 'golden water channel' by the navigation world is increasingly busy, and the resource demand is vigorous due to the rapid development of economy, resources such as bipolar oil gas, biology and the like attract the general height and the attention of all countries in the world, and the scientific and technological forcing state continuously accelerates the construction and dispatching of scientific research ships to enter scientific research and investigation. Based on the reasons, the icebreaker which can sail in the polar region is about to be developed in the world shipbuilding field, the existing icebreaker propeller adopts a cast integral type distance propeller (integral type distance paddle for short), the existing icebreaker propeller not only bears the conventional propelling load, but also bears the additional load of cutting and impacting an ice layer, and the icebreaker propeller is easy to damage and break down when working under such a severe environment, however, the traditional integral type distance paddle has obvious defects and shortcomings: when any blade of the integral type distance paddle is damaged and needs to be replaced or repaired, the whole distance paddle is required to be disassembled, the problems of large construction area, high maintenance difficulty, long repair period, high cost and the like exist, and when the icebreaker is in a severe environment, the propeller is damaged and fails, so that the vitality and the self safety guarantee capability of the icebreaker are greatly reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the application provides a special detachable propeller for an icebreaker: the fixed-pitch propeller comprises a cylindrical fixed-pitch propeller hub, a plurality of fixed-pitch propeller blades are detachably connected to the fixed-pitch propeller hub through fasteners, and a plurality of fixed-pitch propeller blades are centrosymmetric relative to a central shaft of the fixed-pitch propeller hub.

Furthermore, a flange plate is vertically arranged at the root part of the distance blade, a plurality of mounting holes are formed in the flange plate, and the mounting holes are circumferentially distributed in the flange plate.

Furthermore, a plurality of blade mounting positions used for connecting the flange plate are arranged on the outer surface of the distance propeller hub, and threaded holes corresponding to the mounting holes are formed in the blade mounting positions;

the plane where the blade mounting position is located is perpendicular to the radial direction of the distance hub, and the distance between the blade mounting position and the outer edge of the distance hub is smaller than or equal to one third of the radius of the cross section of the distance hub.

Furthermore, the fastener comprises a bolt matched with the threaded hole, and a gasket is arranged on the contact surface of the bolt and the flange plate.

Further, adjacent bolts are connected through a loosening device.

Furthermore, the anti-loosening device is an anti-loosening sheet fixedly connected to the upper surface of the bolt.

Further, the distance propeller hub is provided with an axial center hole, the center hole is formed into a conical structure matched with the tail shaft, and the larger end of the center hole faces the bow of the ship.

The utility model provides a dedicated removable distance oar of icebreaker compares with prior art, and its beneficial effect lies in:

the utility model discloses simple structure, when icebreaker's propeller in abominable and complex environment in the impaired back of work, can change or restore by high efficiency, improve icebreaker's security and vitality, reduce the construction surface, reduce construction strength, reduce constructor technical ability requirement, shorten maintenance cycle, practice thrift the cost.

Drawings

FIG. 1 is a schematic structural view (front view direction) of the present invention,

FIG. 2 is a schematic structural view (side view direction) of the fixed pitch propeller blade of the present invention,

figure 3 is a schematic view (side view direction) of the connection between the distance-finding propeller blades and the distance-finding propeller hub of the present invention,

fig. 4 is an enlarged schematic view of a portion a of fig. 3.

Figure number and name: 1. the pitch propeller comprises a pitch propeller hub 11, a conical hole 12, a blade mounting position 2, pitch propeller blades 21, a flange plate 3, bolts 31, a gasket 32 and an anti-loosening sheet.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention is further described with reference to the accompanying drawings and the detailed description.

Referring to fig. 1, the detachable propeller dedicated for icebreakers provided by the present application comprises a fixed-pitch propeller hub 1 and fixed-pitch propeller blades 2, wherein the fixed-pitch propeller blades 2 are uniformly fixed on the fixed-pitch propeller hub 1 by using a central shaft of the fixed-pitch propeller hub 1 as a rotation axis, and the number of the fixed-pitch propeller blades 2 may be three, four or more (four in this embodiment). A conical hole 11 is formed in the axial center of the fixed-distance propeller hub 1, and the large end of the conical hole 11 faces the bow of the ship and is used for being connected with a tail shaft.

As shown in fig. 2 and 3, the root of the pitch propeller blade 2 is provided with a flange 21, and a plurality of circumferentially arranged mounting holes (not shown in the drawings) are drilled in the flange 21. The radial periphery of the fixed-pitch propeller hub 1 is provided with blade mounting positions 12, the number of the blade mounting positions 12 is consistent with the number of configured blades and is uniformly arranged along the circumference relative to the central shaft of the fixed-pitch propeller hub 1, the shapes of the blade mounting positions 12 are matched with the shapes of the configured blades, the blade mounting positions 12 are provided with threaded holes corresponding to the mounting holes of the flange plate 21, and the threaded holes are circumferentially arranged at the blade mounting positions of the fixed-pitch propeller hub 1;

it needs to be additionally stated that: the plane of the blade mounting position is perpendicular to the radial direction of the fixed-pitch propeller hub, and the distance between the blade mounting position and the outer edge of the fixed-pitch propeller hub is less than or equal to one third of the radius of the cross section of the fixed-pitch propeller hub, so that the blade and the fixed-pitch propeller hub are connected stably, and the related mechanical property of the fixed-pitch propeller hub is not influenced.

The blades and the hub are connected by flanges (circular and plane), the structural characteristics are easier to process and lower in cost, a large number of fixed-distance blades can be stored on the icebreaker, the interchangeability is stronger, and the long-time operation capacity and the vitality of the icebreaker in a polar environment are further improved.

With reference to fig. 3 and 4, the fixed-pitch propeller blade 2 is fixed to the fixed-pitch propeller hub 1 by the bolt 3 and the spacer 31, and the bolt 3 and the spacer 31 are used for ensuring the stability of the connection between the fixed-pitch propeller hub 1 and the fixed-pitch propeller blade 2; the upper surfaces of the adjacent bolts 3 are welded together by the anti-loosening pieces 32 (the number of bolts specifically connected by the anti-loosening pieces can be adjusted according to actual working requirements, and one anti-loosening piece is connected with four bolts in the embodiment) for preventing the bolts 3 from loosening.

The utility model provides a removable propeller:

the biggest difference with respect to the traditional integral distance paddles is that: the utility model discloses a distance oar blade can realize removable with the propeller hub, can accomplish the quick replacement maintenance of pertinence. (ii) a

There is also a significant difference with respect to conventional controllable pitch propeller devices: the hydraulic oil cavity is not arranged, so that the problems of hydraulic oil leakage and the like are solved; the screw-bolt emergency escape device has no complex screw-pitch adjusting mechanism, few parts (the content in two aspects: the screw bolt is only one part, the whole set of the device has few parts), less fault probability, reduced manufacturing cost, no need of using a special hydraulic screw-bolt disassembling tool and more obvious emergency effect.

In practical application, after any one or more distance paddle pieces are damaged, the corresponding bolts and the anti-loosening pieces are detached, then the damaged distance paddle blades are detached, then the blades are repaired or the spare blades are replaced, finally the corresponding fasteners are installed, tightened and welded, and the damaged distance paddle blades can be replaced or repaired quickly and efficiently. By adjusting the ballast system to be matched with the fully adjusted posture of the ice-breaking ship, damaged blades can be replaced on the spot even in the ice area, and the vitality and the self safety guarantee capability of the ice-breaking ship are improved.

In summary, the preferred embodiments of the present invention are only examples, and the scope of the present invention is not limited thereto, and all equivalent changes and modifications made in accordance with the scope of the present invention and the contents of the specification are within the scope covered by the present invention.

Claims

1. The utility model provides a dedicated removable propeller of icebreaker which characterized in that:

the fixed-pitch propeller comprises a cylindrical fixed-pitch propeller hub, a plurality of fixed-pitch propeller blades are detachably connected to the fixed-pitch propeller hub through fasteners, and a plurality of fixed-pitch propeller blades are centrosymmetric relative to a central shaft of the fixed-pitch propeller hub.

2. The detachable thruster special for the icebreaker according to claim 1, characterized in that: the root of the distance paddle is vertically provided with a flange plate, the flange plate is provided with a plurality of mounting holes, and the mounting holes are circumferentially distributed on the flange plate.

3. The detachable thruster special for the icebreaker according to claim 2, characterized in that: a plurality of blade mounting positions used for connecting the flange plate are arranged on the outer surface of the distance propeller hub, and threaded holes corresponding to the mounting holes are formed in the blade mounting positions;

the plane where the blade mounting positions are located is perpendicular to the radial direction of the fixed-distance propeller hub, and the distance between the blade mounting positions and the outer edge of the fixed-distance propeller hub is smaller than or equal to one third of the radius of the cross section of the fixed-distance propeller hub.

4. The detachable thruster special for the icebreaker according to claim 3, characterized in that: the fastener include with screw hole complex bolt, the bolt with the contact surface of ring flange is equipped with the gasket.

5. The detachable thruster special for the icebreaker according to claim 4, characterized in that: and adjacent bolts are connected through a locking device.

6. The detachable thruster special for the icebreaker according to claim 5, characterized in that: the anti-loosening device is an anti-loosening sheet fixedly connected to the upper surface of the bolt.

7. The detachable thruster special for the icebreaker according to claim 1, characterized in that: the pitch propeller hub is provided with an axial center hole, the center hole is formed into a conical structure matched with the tail shaft, and the larger end of the center hole faces the bow of the ship.