CN2910795Y - Semi-submersed blade type propeller - Google Patents

Abstract

The utility model relates to semi-submersed blade type propeller which is arranged on the stern of a small-sized high speed ship for propelling ship to move forward at a high speed. The structural frame of the utility model comprises the shafting of a blade-span axis, a bearing, a seal element and so forth, a semi-submersed screw propeller (hereafter refer to as semi-submersed blade) and a helm system. The utility model has a compact structure with an easy installation performance in which the fabrication and installation process of ship can be simplified tremendously, and the utility model is hung behind a stern plate of ship, and does not occupy the cabin space for which the utilization rate of the cabin can be increased. The shafting of the utility model is over water surface under a high speed condition, the water resistance will not occur, therefore, the sailing speed can be increased.

Description

Partly soak oar propulsive unit

Affiliated technical field

The utility model relates to a kind of marine propulsion, is particularly useful for the miniature high-speed ship, as yacht, and guard boat etc.Particularly its adopts the full-fledged in recent years screw propeller up-to-date technology that partly soaks, and axle system can expose on the water surface when navigating by water at a high speed, and only therefore half oar significantly reduced the water resistance of common inclined shaft and shaft tray in water, helps improving ship's speed.

Background technology

The thrust that at present general canoe all leans on the screw propeller rotation to produce promotes ship and advances at utmost speed, and screw propeller is installed in the oar shaft tail end, and the oar axle then stretches in the ship cabin, is connected with main frame with gear case.Modern age, high speed vessel all adopted the hull of glider form, hull bottom loses thrust in hydroplaning for fear of the screw propeller aspirated air when navigating by water at a high speed, usually screw propeller is placed under the stern hull bottom, the oar axle then tiltedly stretches in the hull bottom, and supports with one or two shaft tray (bearing is arranged in the carriage).This inclined shaft and shaft tray advance in water and certainly lead to water resistance, and very high-revolving ship, this resistance can account for the nearly half value of total drag.In addition, screw propeller often produces cavity during high speed, causes that vacuolus denudation damages.Therefore, modern age constantly the someone study super ventilation partly soak screw propeller, after partly soaking oar and directly being contained in stern, only half oar is in water during high speed, and half oar is on the water surface, blade is in the all-pass gaseity, only depend on acting face to produce thrust, can avoid cavity and vacuolus denudation, corresponding axis system also can be on the water surface, can reduce resistance, improve overall propulsive efficiency.

In addition, advance, must have rudder and steering control system for the course of managing a boat on request.

Summary of the invention

The purpose of this utility model is in conjunction with the preceence and the characteristics of partly soaking oar, and ingenious design is compressed in axle system in the tail pipe, the inverted U-shaped rudder of special shape covered on partly soak on the oar, this rudder has made up rudderpost again, rudder bearing and steering arm, be axle that rudder system and partly soak oar and be combined in one is referred to as with a framework " partly soak oar propulsive unit ".Its compact conformation, weight is lighter, can simplify the design effort of the ship that adopts this utility model greatly and build installation work.And this device only need be installed in ship stern trimming flag back, do not take the cabin space, can improve the cabin degree of utilization, and also can reduce axle is resistance, improves the speed of a ship or plane, thereby improves many-sided economy.

Description of drawings

This accompanying drawing is the general layout of this utility model and the scheme drawing of local cut-away view.The nut (1) that partly soaks oar in the drawings is used for fixing screw propeller, prevents that oar from coming off.Produce thrust when partly soaking oar (2) rotation, it is fixed on the tail end of oar axle (3).The oar axle is by two water lubricated bearings (4) and (6) supporting, and the front end of oar axle links by the gearbox output shaft of coupler (8) with main frame.Sealed letter assembly (7) is used for anti-sealing in cabin is leaked in the screw shaft pipe (5) and the gap of axle, but fills oar axle high speed revolution perhaps again.

Main exhaust pipe relay part (10) is to partly soaking the oar exhaust, and the whole oar that partly soaks is all in water the time when lowsteaming, and exhaust can be forced the air admission blade, and it is too big to avoid partly soaking the oar load, and engine speed can not in time increase and send whole power.

In order to make total compacter, steer (15) be designed to inverted U-shaped, partly cover on and partly soak on the oar, the top fixedly rudderpost (13) of rudder is inserted in the rudder bearing (12), rudder bearing then is installed in the bushed bearing (11), and the square toes and the rudder arm (14) of rudderpost upper end are fixing, and rudder arm links to each other with hydraulic sterring engine again, but control vane rotates on request, the course of control ship.

All parts all are installed on total framework (9), and the plane of total framework interfixes as the stern trimming flag of reference plane with ship.Guarantee the mutual alignment and the angle of each parts, guarantee that each parts brings into play its due function.

Annotate: some unessential findings, unlisted among the figure.

The specific embodiment

Each parts that " partly soaks oar propulsive unit " all should be constructed by figure, and meet every technology, engineering factor and requirement.Particularly the design of oar axle and processing should meet " high speed vessel go into the level with the construction standard " requirement.Partly soaking oar should be respectively by the ship curve of resistance and the main engine power characteristic of this device of adapted, and customized design is carried out in speed of a ship or plane requirement etc., processing.Be fixed on request on the stern trimming flag of ship after the assembling then, oar axle and coupler then stretch in the cabin and link with gearbox output shaft.

Claims (2)

1. one and half soak oar propulsive unit, it is characterized in that: aggregate erection partly soak oar, axle system and rudder tie up on the framework, partly soak the tail end that oar (2) is contained in oar axle (3), inverted U-shaped rudder (15) partly covers on the oar, the bearing of oar axle (4), (6), sealed letter assembly (7) etc. is assembled in the tail pipe (5).

2. according to the described oar propulsive unit that partly soaks of claim 1, it is characterized in that: be in the charge of (11) by total framework (9) union tail (5) and rudderpost and form one, the reference plane of total framework that assurance connects with the ship stern trimming flag constitutes fixing angle with oar axle and rudderpost line of centers, guarantees that oar and hull bottom have best relative position.