CN2605197Y

CN2605197Y - Screw propeller

Info

Publication number: CN2605197Y
Application number: CN 03228680
Authority: CN
Inventors: 李日华
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-26
Filing date: 2003-01-26
Publication date: 2004-03-03
Anticipated expiration: 2013-01-26

Abstract

The utility model discloses a new type propeller comprising a wheel shaft and a plurality of blades, the axial length of the tail end of which is extended by two to four times. The edge of the blades comprises four curves-a resistance control curve, a rotating exterior curve, a connecting curve and a let water curve. The rotating exterior curve is an arc, the centre of which is the axes of the wheel shaft. Draw a circle, the radius of which is half of the radius of the former circle, forming another arc. The part of the blades in the rotating exterior curve and out of the second arc forms a concave surface along the direction vertical to the direction of the radius, forming an angle with the cross section of the shaft ranging from 13 DEG to 23 DEG. The utility model can increase the speed of various ships by 30 percent with the advantages of energy saving, small vibrating force, steadiness, positive precession, large reversing force, simple structure, being practical and being not easy to be stranded.

Description

Novel propeller

Technical field

The utility model relates to a kind of propeller, relates in particular to a kind of novel propeller.

Background technology

The boats and ships shipping is a big transit industry, ocean freight, inland water transport and the various industry ship of country, it is one of industry of national economic development, and the major part that propeller is a ship advances, traditional propeller blade afterbody is short and small, for skew back precession mode, cause power waste, effort, increased energy consumption, economical inadequately.Referring to Fig. 1, the conventional art propeller constitutes by deterring line k, connection lead m and allowing four curves of waterline n link to each other successively, forms skew back precession mode.

The utility model content

The purpose of this utility model is: provide a kind of simple in structure, take little effort, novel propeller that energy consumption is low.

The utility model is realized by following scheme: be made of a wheel shaft and a plurality of blade, blade afterbody axial length extends to two to four times.

Blade edge of the present utility model by deter line, revolve outside line, connection lead and allow four curves of waterline link to each other successively to constitute, revolve outside line for being the circular arc line in the center of circle with the wheel shaft axle center, with half of this radius of circle is that radius is drawn round-formed circular arc line, revolve outside line and be concave surface with radially perpendicular direction with the edge of the blade-section beyond the interior and above-mentioned circular arc line, and be 13-23 degree angle with shaft section, the best is 18 degree angles.

The utility model can make various ship speedups up to 30%, and energy savings, and vibratory force is little, steadily, positive precession, reversing power is big, is difficult for stranded, and simple in structure, practical, effective.

Description of drawings

Fig. 1 is a conventional art propeller structural representation;

Fig. 2 is the utility model example structure scheme drawing.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is elaborated.

The utility model as shown in Figure 2, constitute by a wheel shaft 2 and a plurality of blade 1, blade 1 edge by deter line k, revolve outside line l1, connection lead m and allow four curves of waterline n link to each other successively to constitute, the propeller tail length of supposing conventional art is D, propeller tail length 3 then of the present utility model is 2D-4D, revolve outside line l1 for being the circular arc line in the center of circle with the wheel shaft axle center, with half of this radius of circle is that radius is drawn round-formed circular arc line l2, revolve outside line l1 and be concave surface with radially perpendicular direction, and be 13-23 degree angle with shaft section with the edge of blade 1 part beyond interior and the circular arc line l2.

Following casehistory:

Present embodiment is made of a wheel shaft 2 and three blades 1, the wheel shaft diameter is 22.5mm, length of blade is 103mm, afterbody 3 length are 43mm, then screw diameter is 228.5mm, revolve outside line l1 and be concave surface with radially perpendicular direction, and be 18 degree angles with shaft section with the edge of blade 1 part beyond interior and the circular arc line l2.

Claims

1, a kind of novel propeller is made of a wheel shaft (2) and a plurality of blade (1), and it is characterized in that: blade afterbody axial length extends to two to four times.

2, novel propeller according to claim 1, it is characterized in that: blade (1) edge by deter line (k), revolve outside line (l1), connection lead (m) and allow four curves of waterline (n) link to each other successively to constitute, revolve outside line (l1) for being the circular arc line in the center of circle with the wheel shaft axle center, with half of this radius of circle is that radius is drawn round-formed circular arc line (l2), revolve outside line (l1) with interior and circular arc line (l2) blade (1) part in addition along being concave surface with radially perpendicular direction.

3, novel propeller according to claim 1 and 2 is characterized in that: concave surface and shaft section are 13-23 degree angle.

4, novel propeller according to claim 1 and 2 is characterized in that: the best good 18 degree angles that become of concave surface and shaft section.