CN215904722U

CN215904722U - Bionic water-treading variable-pitch water surface propeller

Info

Publication number: CN215904722U
Application number: CN202121050128.0U
Authority: CN
Inventors: 朱兵; 许向阳; 王宇泓; 邱俊淼; 徐奔
Original assignee: University of Shanghai for Science and Technology
Current assignee: University of Shanghai for Science and Technology
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2022-02-25
Anticipated expiration: 2031-05-17

Abstract

The utility model discloses a bionic water-treading variable-pitch water surface propeller which comprises a cross mounting frame, a central gear, four driven gears, four thin wing plates and four connecting rods, wherein the central gear is rotatably arranged at the center of the cross mounting frame, the four driven gears are respectively and equidistantly rotatably arranged on four arms of the cross mounting frame, the four driven gears are respectively meshed with the central gear, each connecting rod comprises a long rod and a short rod, the long rod is hinged with the end part of the short rod, the other end part of the long rod is hinged to the outer edge of the wheel surface of the driven gear, the other end part of the short rod is hinged to the end parts of the four arms of the cross mounting frame, the four thin wing plates are respectively positioned at the end parts of the four arms of the cross mounting frame, and the inner side surfaces of the four thin wing plates are fixedly connected with the other end part of the short rod through connecting blocks. The water surface propeller overcomes the defects of the traditional water surface propulsion, effectively imitates the action process of the aquatic movement of animals, and has the advantages of excellent control performance, high propulsion speed, simple structure and the like.

Description

Bionic water-treading variable-pitch water surface propeller

Technical Field

The utility model relates to the technical field of propulsion driving, in particular to a bionic water treading and variable pitch water surface propeller.

Background

Propeller rotation, pump water spray, flapping or traveling wave motion, etc. are all common underwater propulsion modes. Observing the nature, it can be found that the robot quickly grabs like lizards, flying birds and the like from the water surface, or drifts on water by martial arts highhands in swordsmen novels, which is also an effective propulsion mode in practice. The basic principle is that the water body directly generates reaction force by utilizing high-speed motion, the component of the water body in the vertical direction is balanced with gravity, and the component of the water body in the horizontal direction generates propulsion acceleration.

Traditional surface of water propeller mostly is the screw form, as shown in fig. 1, also has to be equipped with spoke 2 on

wheel hub

1, and 2 free ends slopes of spoke set up dull and stereotyped blade 3, and along with wheel hub 1's rotation, dull and stereotyped blade 3 produces the propulsive force of lifting power and horizontal direction of vertical direction under water. However, the flat blade 3 with fixed inclination rotates around a fixed center, so that the changes of the postures of the flat blade 3 from water inlet, water passing and water outlet cannot be truly simulated, the action process of simulating the aquatic movement of animals cannot be achieved, and the flat blade is not beneficial to improving the propulsion efficiency.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a bionic water-treading variable-pitch water surface propeller which overcomes the defects of the traditional water surface propulsion, effectively simulates the action process of aquatic movement of animals, and has the advantages of excellent control performance, high propulsion speed, simple structure and the like.

In order to solve the technical problem, the bionic water-treading and pitch-changing water surface propeller comprises a cross-shaped mounting frame, a central gear, four driven gears, four thin wing plates and four connecting rods, wherein the central gear is rotatably arranged at the center of the cross-shaped mounting frame, the four driven gears are respectively and equidistantly rotatably arranged on four arms of the cross-shaped mounting frame, the four driven gears are respectively meshed with the central gear, each connecting rod comprises a long rod and a short rod, the long rod is hinged to the end part of the short rod, the other end part of the long rod is hinged to the outer edge of the wheel surface of the driven gear, the other end part of the short rod is hinged to the end part of the four arms of the cross-shaped mounting frame, the four thin wing plates are respectively positioned at the end parts of the four arms of the cross-shaped mounting frame, and the inner side surfaces of the four thin wing plates are fixedly connected with the other end part of the short rod through connecting blocks.

Furthermore, the propeller further comprises a fixed shaft and a rotating shaft sleeve, wherein the end part of the fixed shaft is connected with the center of the central gear, and the end part of the rotating shaft sleeve is sleeved in the fixed shaft and is connected with the center of the cross-shaped mounting rack.

Furthermore, the central gear is fixed, the cross-shaped mounting frame rotates under the drive of a rotating machine, the four driven gears are meshed with the central gear and then rotate, and the four thin wing plates are driven to swing through the four connecting rods.

Furthermore, the swinging angles of the four thin wing plates are an inlet angle of 180 degrees and an outlet angle of 90 degrees.

Furthermore, the propeller also comprises circular reinforcing ribs, wherein the circular reinforcing ribs are arranged on the four arms of the cross-shaped mounting rack and are concentric with the cross-shaped mounting rack.

The bionic water-treading variable-pitch water surface propeller adopts the technical scheme, namely the propeller comprises a cross mounting frame, a central gear, four driven gears, four thin wing plates and four connecting rods, wherein the central gear is rotatably arranged in the center of the cross mounting frame, the four driven gears are respectively and equidistantly rotatably arranged on four arms of the cross mounting frame, the four driven gears are respectively meshed with the central gear, each connecting rod comprises a long rod and a short rod, the long rod is hinged with the end part of the short rod, the other end part of the long rod is hinged to the outer edge of the wheel surface of the driven gear, the other end part of the short rod is hinged to the end part of the four arms of the cross mounting frame, the four thin wing plates are respectively positioned at the end parts of the four arms of the cross mounting frame, and the inner side surfaces of the four thin wing plates are fixedly connected with the other end part of the short rod through connecting blocks. The water surface propeller overcomes the defects of the traditional water surface propulsion, effectively imitates the action process of the aquatic movement of animals, and has the advantages of excellent control performance, high propulsion speed, simple structure and the like.

Drawings

The utility model is described in further detail below with reference to the following figures and embodiments:

FIG. 1 is a schematic view of a conventional water surface thruster;

FIG. 2 is a schematic structural view of a bionic water-treading and pitch-changing water surface propeller;

FIG. 3 is a schematic front view of FIG. 2;

fig. 4 is a rear view of fig. 2.

Detailed Description

Embodiment as shown in fig. 2, 3 and 4, the bionic water-treading and pitch-changing water surface propeller comprises a cross mounting frame 1, a central gear 2, four driven gears 3, four thin wing plates 4 and four connecting rods 5, the central gear 2 is rotatably arranged at the center of the cross mounting rack 1, the four driven gears 3 are respectively and equidistantly rotatably arranged on four arms of the cross mounting rack 1, the four driven gears 3 are respectively engaged with the central gear 2, the connecting rod 5 includes a long rod 51 and a short rod 52, and the long rod 51 is hinged with the end of the short rod 52, the other end of the long rod 51 is hinged with the outer edge of the wheel surface of the driven gear 3, the other end of the short rod 52 is hinged to the four-arm end of the cross mounting frame 1, the four thin wing plates 4 are respectively positioned at the four-arm end of the cross mounting frame 1, and the inner side surfaces of the four thin wing plates 4 are fixedly connected with the other end parts of the short rods 52 through connecting blocks.

Preferably, the propeller further comprises a fixed shaft 7 and a rotating shaft sleeve 8, wherein the end of the fixed shaft 7 is connected with the center of the central gear 2, and the end of the rotating shaft sleeve 8 is sleeved on the fixed shaft 7 and is connected with the center of the cross-shaped mounting frame 1. The fixed shaft is used for being connected with the ship body to fix the central gear, and the rotating shaft sleeve is connected with rotating power equipment of the ship to drive the cross mounting frame to rotate.

Preferably, the central gear 2 is fixed, the cross-shaped mounting frame 1 is driven by a rotating machine to rotate, and the four driven gears 3 are meshed with the central gear 2 and then rotate, and the four thin wing plates 4 are driven to swing through the four connecting rods 5.

Preferably, the swinging angles of the four thin wing plates 4 are an inlet angle of 180 degrees and an outlet angle of 90 degrees. The water inlet angle is set to be 180 degrees, so that the thin wing plate can be completely contacted with water, the thrust of the thin wing plate is improved, and the water outlet angle is set to be 90 degrees, so that the thin wing plate can be vertically discharged from the water surface, and the resistance is reduced.

The swing angle of the thin wing plate can be set to enable the thin wing plate to generate certain angle change by adjusting the phase angle of the driven gear, the proper gear module tooth number and transmission ratio are determined, the initial angle position of the thin wing plate and the like are adjusted to achieve the perfect water inlet and outlet angle, the optimal condition is that the water enters horizontally at 180 degrees and exits vertically at 90 degrees, and therefore the thrust and the resistance brought to the ship body by water-skiing are the largest and the resistance is the smallest.

Preferably, the propeller further comprises circular reinforcing ribs 6, wherein the circular reinforcing ribs 6 are arranged on four arms of the cross-shaped mounting frame 1 and are concentric with the cross-shaped mounting frame 1. The circular ring reinforcing ribs are used for improving the rigidity of the cross-shaped mounting rack, and the reliable operation of the water surface propeller is ensured.

The water surface propeller adopts a variable pitch design, simulates the change of the pedal from the states of water entering, water passing and water leaving, and adopts the thin wing plate to replace a flat plate, thereby reducing the resistance and improving the lift force and the propulsion efficiency.

The water surface propeller comprises a planetary gear transmission system formed by a central gear and four driven gears, wherein an eccentric connecting rod formed by a long rod and a short rod is arranged to realize the pitch-changing action of thin wing plates, so that the pitch-changing swing of the thin wing plates is realized, the thin wing plates revolve around the center of a planet together, the whole water surface propeller can move in a water-gas cross medium, and the water surface propeller is arranged on two sides of a ship to realize the ship propulsion. The ship power drives the cross mounting frame to rotate, so that the four driven gears on the cross mounting frame rotate and rotate around the central gear at the center of the cross mounting frame, the thin wing plate is connected with the driven gears through the connecting rods, the contact angle of the thin wing plate and the water surface is determined by the rotating position of the driven gears, and the thin wing plate finishes pitch control operation through rotation of the cross mounting frame and rotation of the driven gears to paddle.

The pitch-variable action of the thin wing plate is realized by a planetary gear transmission system of the water surface propeller, the planetary gear transmission system consists of a central gear arranged at the center of a cross mounting frame and driven gears arranged at four arms of the cross mounting frame, the central gear is static relative to a ship body, the cross mounting frame is driven to rotate by power output by a ship, the cross mounting frame rotates to drive the four driven gears at the four arms to rotate, and the driven gears rotate around the central gear and simultaneously rotate respectively to complete revolution and rotation. The four driven gears are respectively linked with the thin wing plate through connecting rods, so that the thin wing plate can achieve different water-skiing positions by using different rotating positions of the driven gears. The water surface propeller can be suitable for various types of ship bodies, and effectively improves the propelling efficiency of ships.

Claims

1. The utility model provides a bionical type is stepped on water and is become oar surface of water propeller which characterized in that: this surface of water propeller includes cross mounting bracket, sun gear, four driven gears, four thin pterygoid lamina and four connecting rods, sun gear is rotatable to be located the cross mounting bracket center, four driven gears equidistance respectively are rotatable to be located the cross mounting bracket four arms, four driven gears respectively with the sun gear meshing, the connecting rod includes stock and quarter butt to stock and quarter butt end portion hinge, another tip of stock articulates in driven gear wheel face outer fringe, another tip of quarter butt articulate in the four arm tip of cross mounting bracket, four thin pterygoid lamina are located respectively the four arm tip of cross mounting bracket, and the medial surface of four thin pterygoid lamina pass through the connecting block with another tip fixed connection of quarter butt.

2. The bionic water-treading variable-pitch water surface propeller of claim 1, characterized in that: the propeller also comprises a fixed shaft and a rotary shaft sleeve, wherein the end part of the fixed shaft is connected with the center of the central gear, and the end part of the rotary shaft sleeve is sleeved in the fixed shaft and is connected with the center of the cross-shaped mounting rack.

3. The bionic water-treading and pitch-changing water surface propeller as claimed in claim 1 or 2, wherein: the central gear is fixed, the cross-shaped mounting frame rotates under the drive of a rotating machine, the four driven gears are meshed with the central gear and then rotate, and the four thin wing plates are driven to swing through the four connecting rods.

4. The bionic water-treading variable-pitch water surface propeller of claim 3, characterized in that: the swinging angles of the four thin wing plates are a water inlet angle of 180 degrees and a water outlet angle of 90 degrees.

5. The bionic water-treading variable-pitch water surface propeller of claim 1, characterized in that: the propeller also comprises circular reinforcing ribs, wherein the circular reinforcing ribs are arranged on the four arms of the cross-shaped mounting rack and are concentric with the cross-shaped mounting rack.