CN105383666A - Half-revolution blade ship propeller with linear motor - Google Patents

Abstract

The invention discloses a half-revolution blade ship propeller with a linear motor, and belongs to the technical field of ships. The half-revolution blade ship propeller comprises a main shaft, a rotary disc, an annular flat plate blade, a traction rod, a positioning rod and a shell. The shell comprises a left side plate, a bottom plate and a right side plate. Filter screens are arranged at the front end and the rear end of the shell. The positioning rod is vertically installed on the bottom plate of the shell. The positioning rod is sleeved with the annular flat plate blade which is perpendicular to the bottom plate of the shell. The rotary disc is horizontally arranged above the flat plate blade. The linear motor is installed on the rotary disc. The linear motor comprises a stator and a rotor. The upper end of the traction rod is installed on the rotor. The traction rod is vertically arranged. The lower section of the traction rod is inserted in the annular flat plate blade. The main shaft is installed at the center of the rotary disc. The main shaft is vertically distributed above the rotary disc and installed on a support through a bearing. Power drives the rotary disc to rotate and the linear motor to move so as to drive the flat plate blade to do the half-revolution movement in the shell. The movement effect and the mirror surface effect like sudden expanding and opposite attacking of insects can be achieved, and efficiency is high.

Description

A semi-rotary blade ship propeller with a linear motor

technical field

The utility model relates to a semi-rotary blade ship propeller with a linear motor, which belongs to the technical field of ships, and in particular relates to a ship propeller.

Background technique

Most traditional ship propellers use propellers. Although they are easy to drive, their efficiency is low. The manufacturing process of the blades is complicated, and wakes will be generated when they are used. After the water enters and before the water exits, the water resistance is large and the thrust generated is very small, the energy loss is large, the efficiency is low, and the noise is large. Authorized notification number is the patent of CN100360378C, discloses a kind of bionic flat ship propeller, although efficiency is higher, structure is more complicated.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned deficiencies of the traditional ship propulsion technology, and to invent a high-efficiency semi-rotary blade ship propeller with a linear motor.

A semi-rotary blade marine propeller with a linear motor includes a main shaft, a rotating disk, an annular flat plate blade, a drawing rod, a positioning rod and a casing. The annular flat plate blade comprises identical arc-shaped bodies at both ends and two identical flat plates in the middle section. In order to make the propeller run smoothly and reliably, the gap between the two flat plates of the annular flat blade is slightly greater than the sum of the diameters of the positioning rod and the draw bar, the height of the positioning rod is greater than half of the height of the annular flat blade, and the draw rod The height is greater than three-fifths of the height of the annular flat blade. The casing includes a left side plate, a bottom plate and a right side plate, the left side plate and the right side plate are vertically arranged, and the bottom plate is arranged horizontally. The positioning rod is located in the middle of the front and rear direction of the casing and is installed on the bottom plate of the casing near the left side plate. The positioning rod is arranged vertically, and the gap between the positioning rod and the left side plate is slightly larger than the diameter of the draw rod and a piece of the annular flat blade. The sum of the thicknesses of the flat plates ensures that the annular flat blades can flexibly move in a semicircle in the casing. The annular flat blade is set on the positioning rod and is located inside the casing, and the annular flat blade is perpendicular to the bottom plate of the casing. The turntable is horizontally arranged above the flat blades, and a linear motor is installed on the turntable. A linear motor consists of a stator and a mover. The upper end of the draw bar is installed on the mover, the draw bar is vertically arranged, and the lower section of the draw bar is inserted into the annular flat plate blade. The main shaft is installed in the center of the turntable, the main shaft is vertically arranged above the turntable, and is installed on the support through bearings. In order to prevent sundries such as fish and aquatic plants from entering the housing, filter screens are installed at the front and rear of the housing.

A kind of semi-rotary blade ship propeller with linear motor of the present invention produces beneficial effect like this: At first, the annular flat blade is in the vertical most forward position, and the rear end inner wall of the annular flat blade is close to the trailing edge of the positioning bar, and the annular flat blade The front end of the blade is at the front end, the left side of the annular flat blade is close to the right side of the left plate of the shell, the active force driving the propeller is input from the upper end of the main shaft, and the propeller is viewed from top to bottom, the main shaft Drive the turntable to rotate clockwise. Since the drawbar is inserted into the annular flat blade, the mover of the linear motor drives the drawbar to make a reciprocating linear motion on the turntable. Make a semi-circular motion inside, that is, the annular flat blade rotates half a circle around the positioning rod at the longitudinal front position and reaches the longitudinal final position, and then moves forward in a straight line to the longitudinal front position, and then the annular flat blade rotates clockwise around the positioning rod for half a circle, and then again Go straight ahead to the longitudinal frontmost position, that is, return to the initial position. Next, continue to repeat the above process periodically. In this way, the annular flat plate blades will continuously introduce the water in the front of the shell and then draw it to the rear to generate forward thrust. During the movement, the ring-shaped flat blades quickly open between the front and the left side panel of the shell and quickly close between the rear and the left side panel, producing the "jittery" and "sumo" movement effects similar to insects, and Due to the restraint of the casing and the turntable, the movement of the ring-shaped flat blades in the casing also produces a mirror effect, which can generate a large thrust. The propeller includes, but is not limited to, the following advantages: low energy loss, high efficiency, and easy-to-fabricate blades, which do not produce obvious wakes like propeller propellers, and do not have serious water splashing like traditional paddle wheel propellers. Phenomenon. If the power makes the annular flat blades move counterclockwise in a semi-circle, the device can make the ship retreat.

In order to make the efficiency of the propeller higher, the ratio of the aspect ratio of the annular flat blade is between 1 and 4.

In order to reduce the friction between the bottom of the annular flat blade and the upper surface of the bottom plate of the casing when the annular flat blade moves in the casing, the bottom of the annular flat blade is inlaid with anti-friction balls, or a wear-resistant flat gasket is placed on the positioning rod , the wear-resistant flat gasket is located on the upper surface of the bottom plate of the shell and pads on the bottom of the annular flat blade; the density of the annular flat blade is less than 1500kg/m ³ .

In order to reduce the friction between the draw bar and the positioning bar and the inner surface of the annular flat blade, anti-friction balls or needles are inlaid around the draw bar and the positioning bar, or rollers or bearings are set around the draw bar and the positioning bar .

In order to reduce the friction between the outer surface of the annular flat blade and the right side of the left side plate of the housing, the right side of the left side plate is inlaid with anti-friction balls or needles.

In order to achieve high efficiency and energy saving, the structure of the propeller is made compact, so that the width of the annular flat blade is slightly smaller than the distance between the right side of the left side plate of the housing and the left side of the right side plate; the height of the annular flat blade is slightly Less than the distance between the lower surface of the turntable and the upper surface of the bottom plate of the casing; the gap between the lower surface of the turntable and the left side plate and the right side plate should be as small as possible.

Description of drawings

Fig. 1 is a schematic rear view of a semi-rotary blade ship propeller with a linear motor of the present invention; Fig. 2 is a schematic top view of Fig. 1; Fig. 3 is a schematic diagram of the movement of the annular flat blade of the propeller of the present invention in the housing .

In the figure, 1-main shaft, 2-turntable, 21-stator, 22-mover, 25-turntable rotation direction indicator; 3-annular flat blade, 31-indicates that the annular flat blade is at the front position, and 32-indicates that the annular flat blade is in the front position. Lateral position, 33-indicates that the annular flat blade is in the last position, 34-indicates the direction of rotation of the annular flat blade; 35-indicates the forward direction of the annular flat blade; 4-drawing rod; 5-positioning rod, 51-wear-resistant flat pad 6-shell, 61-left side plate, 62-bottom plate, 63-right side plate; 7-filter screen; 8-the forward direction indication of the propeller.

detailed description

The present invention is described in conjunction with accompanying drawing now: a kind of semi-rotary blade ship propeller with linear motor, comprises main shaft 1, rotating disk 2, annular flat plate blade 3, draw bar 4, positioning bar 5 and casing 6. The annular flat plate blade 3 comprises identical arc-shaped bodies at both ends and two identical flat plates in the middle section. The aspect ratio of the annular flat blade 3 is 1.8:1. In order to make the propeller run smoothly and reliably, the outer diameters of the draw bar 4 and the positioning bar 5 are the same, the height of the positioning bar 5 is greater than half of the height of the annular flat blade 3, and the height of the draw bar 4 is greater than half of the height of the annular flat blade 3 three out of five. The casing 6 includes a left side plate 61 , a bottom plate 62 and a right side plate 63 , the left side plate 61 and the right side plate 63 are vertically arranged, and the bottom plate 62 is arranged horizontally. Positioning rod 5 is in the middle part of the front and rear direction of shell 6 and is installed on the bottom plate 62 of shell 6 near left side plate 61 places, and positioning rod 5 is arranged vertically, and positioning rod 5 is installed as close as possible to left side plate 61, and positioning rod 5 and The gap between the left side plates 61 is slightly greater than the sum of the diameter of the drawbar 4 and the thickness of a plate of the annular flat blade 3, and can ensure that the annular flat blade 3 can move flexibly in a semicircle in the housing 6. The annular flat blade 3 is sleeved on the positioning rod 5 and located inside the casing 6 , and the annular flat blade 3 is perpendicular to the bottom plate 62 of the casing 6 . The turntable 2 is horizontally arranged above the flat blades 3, and a linear motor is installed on the turntable 2. The linear motor includes a stator 21 and a mover 22 . The upper end of the draw bar 4 is installed on the mover 22 , the draw bar 4 is arranged vertically, and the lower section of the draw bar 4 is inserted into the annular flat plate blade 3 . The main shaft 1 is installed in the center of the turntable 2, the main shaft 1 is vertically arranged above the turntable 1, and is mounted on a support through a bearing. In order to prevent sundries such as fish and aquatic plants from entering the shell 6, a filter screen 7 is installed in the front and rear of the shell 6.

Described propeller works like this: Assume that the annular flat blade 3 is in the longitudinal most forward position at first, that is, the rear end inner wall of the annular flat blade 3 is close to the trailing edge of the positioning bar 5, the front end of the annular flat blade 3 is at the front end, and the annular flat blade The left side of the blade 3 is close to the right side of the left side plate 61 of the casing 6, and the main force for driving the propeller is input from the upper end of the main shaft 1. Looking down at the propeller from top to bottom, the main shaft 1 drives the turntable 2 to Rotating clockwise, since the drawbar 4 is inserted into the annular flat blade 3, the mover 22 of the linear motor drives the drawbar 4 to make a reciprocating linear motion on the turntable 2. The flat plate blade 3 moves in a semi-circle in the housing 6, that is, the annular flat blade 3 reaches the longitudinal final position after rotating half a circle around the positioning rod 5 at the longitudinal front position, and then moves straight forward to the longitudinal front position, and then the annular flat blade 3 circles around again. The positioning rod 5 rotates half a circle clockwise, and then moves straight ahead to the longitudinal frontmost position, that is, returns to the original position. Next, continue to repeat the above process periodically. In this way, the annular flat plate blade 3 will continuously introduce the water in the front into the casing 6 and then draw it to the rear to generate forward thrust. During the movement, the annular flat blade 3 is quickly opened between the front and the left side plate 61 of the housing 6 and quickly closed between the back and the left side plate 61, resulting in "snap" and "sumo" similar to insects Movement effect, and due to the constraints of the casing 6 and the turntable 2, the movement of the annular flat blade 3 in the casing 6 also produces a mirror effect, which can produce a large thrust. The propeller includes, but is not limited to, the following advantages: low energy loss, high efficiency, and easy-to-fabricate blades, which do not produce obvious wakes like propeller propellers, and do not have serious water splashing like traditional paddle wheel propellers. Phenomenon. If the power makes the annular flat blade 3 move counterclockwise in a semicircle, the device can make the ship retreat.

If the aspect ratio of the annular flat plate blade 3 is increased, the propulsion efficiency will be higher.

Claims (6)

1. A semi-rotary blade ship propeller with a linear motor, characterized in that it includes a main shaft (1), a turntable (2), an annular flat blade (3), a draw bar (4), a positioning bar (5) and a casing (6); the annular flat blade (3) includes the same arc-shaped body at both ends and two identical flat plates in the middle; in order to make the propeller run smoothly and reliably, the outer parts of the draw bar (4) and the positioning bar (5) diameters are the same, the height of the positioning rod (5) is greater than half of the height of the annular flat blade (3), the height of the draw bar (4) is greater than three-fifths of the height of the annular flat blade (3); the shell (6) includes the left The side plate (61), bottom plate (62) and right side plate (63), the left side plate (61) and the right side plate (63) are arranged vertically and vertically, and the bottom plate (62) is arranged horizontally; the positioning rod (5) is in the The middle part of the front and back direction of the housing (6) is installed on the bottom plate (62) of the housing (6) close to the left side plate (61), the positioning rod (5) is vertically arranged, and the positioning rod (5) is as close to the left side as possible Plate (61) is installed, and the gap between the positioning rod (5) and the left side plate (61) is slightly larger than the sum of the diameter of the draw bar (4) and the thickness of a flat plate of the annular flat blade (3), and it can ensure that the ring The flat blade (3) flexibly moves half a circle in the housing (6); the annular flat blade (3) is set on the positioning rod (5) and is located inside the housing (6). The annular flat blade (3) and the housing (6) ) bottom plate (62) is vertical; the turntable (2) is arranged horizontally above the flat blade (3), and a linear motor is installed on the turntable (2); the linear motor includes a stator (21) and a mover (22); the drawbar The upper end of (4) is installed on the mover (22), the drawbar (4) is vertically arranged, and the lower part of the drawbar (4) is inserted into the annular flat blade (3); the main shaft (1) is installed on the turntable (2) In the center, the main shaft (1) is arranged vertically above the turntable (1), and is installed on the support through bearings; filter screens (7) are installed on the front and rear of the casing (6). 2. A semi-rotary blade ship propeller with a linear motor according to claim 1, characterized in that the density of the annular flat blade (3) is less than 2000kg/m ³ . 3. A semi-rotary blade ship propeller with a linear motor according to claim 1, characterized in that the aspect ratio of the annular flat blade (3) is between 1 and 4. 4. A semi-rotary blade ship propeller with a linear motor according to claim 1, 2 or 3, characterized in that: the bottom of the annular flat blade (3) is inlaid with anti-friction balls, or on the positioning rod (5 ) is covered with a wear-resistant flat gasket (51), and the wear-resistant flat gasket (51) is located on the upper surface of the bottom plate (62) of the shell (6) and is placed on the bottom of the annular flat blade (3). 5. A semi-rotary blade ship propeller with a linear motor according to claim 1, 2 or 3, characterized in that: the traction rod (4) and the positioning rod (5) are inlaid with anti-friction balls or Needle rollers, or rollers or bearings are sheathed around the draw bar (4) and the positioning bar (5). 6. A semi-rotary blade ship propeller with a linear motor according to claim 1, 2 or 3, characterized in that: the right side of the left side plate (61) is inlaid with anti-friction balls or needles.