CN105799894A - Guide rod swinging type cycloidal propeller with amplifying mechanism - Google Patents

Abstract

The invention discloses a swing guide rod type cycloid propeller with an amplifying mechanism, which includes a motor, a rotary box, blades and at least one steering gear, the motor drives the rotary box to rotate through a main shaft and a connecting shaft, and the blades There is a blade shaft at the upper end of the blade shaft, the blade shaft is connected with the rotary box through a bearing, and a guide rod slider mechanism is arranged inside the rotary box, and the guide rod slider mechanism includes a star connecting rod, a slider shaft and Guide rod, the star-shaped connecting rod includes a central shaft and several struts, the number of the struts, slider shafts, and guide rods is respectively consistent with the number of the blades, and correspondingly, the slider shaft is fixed on the The end of the pole, the guide rod is provided with a slide rail that can slide the slider shaft, and one end of the guide rod is fixed to the blade shaft; the cycloidal propeller also includes a Steering gear driven star link translation mechanism. The invention can realize the swing law of the blades of the cycloidal propeller, and at the same time can realize the stepless change of the eccentricity in a relatively large range, can realize the stepless change of the propulsion direction and size of the propulsion force within the range of 360°, and has excellent maneuverability .

Description

Swing Guide Rod Type Cycloidal Thruster with Amplifying Mechanism

technical field

The invention belongs to the technical field of propeller manufacturing for special ships, and in particular relates to a swing guide rod type cycloid propeller with an amplifying mechanism.

Background technique

Cycloidal propeller (Cycloidal Propeller), which consists of a set of shaped straight blades extending vertically from the hull into the water, the blades move in a circle around the central axis of the hull, and swing around their own axis according to a certain rule. The law of motion is that the vertical line of the chord line of the blade always intersects with the control point N. By changing the position of the control point N, the swing law of the blade can be changed, and the infinite change of the propulsion direction and size within 360° can be realized. Therefore, it has excellent maneuverability and can greatly improve the flexibility of the ship.

There are many kinds of realization mechanisms for cycloidal thrusters, which can be roughly divided into two types: non-adjustable eccentricity and adjustable eccentricity. The displacement of the control point of the cycloid propeller with non-adjustable eccentricity cannot be changed, so the maneuverability is poor. The eccentricity of the cycloid propeller with adjustable eccentricity can be changed steplessly within a certain range, and the thrust can be changed by changing the eccentricity or the speed of the propeller, so as to obtain excellent maneuverability. In order to realize the adjustable eccentricity of the cycloidal propeller designed in the past, its structure is often more complicated, which reduces the reliability. The eccentricity of the cycloid propeller with relatively simple structure cannot be adjusted, so its maneuverability cannot be fully utilized. Therefore, it is of great significance to design a novel cycloid thruster with adjustable eccentricity and reliability.

Contents of the invention

The problem to be solved by the present invention is to provide a swing guide rod type cycloid propeller with adjustable eccentricity, high efficiency and reliability.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solution: a swing guide rod type cycloid propeller with an amplifying mechanism, including a motor, a rotary box, blades and at least one steering gear, and the motor drives the motor through a main shaft and a connecting shaft. The rotary box rotates, and the upper end of the blade has a blade shaft, and the blade shaft is connected with the rotary box through a bearing, and a guide rod slider mechanism is arranged inside the rotary box, and the guide rod slider mechanism includes a star-shaped Connecting rods, slider shafts and guide rods, the star-shaped connecting rods include a central shaft and several struts, the numbers of the struts, slider shafts, and guide rods are respectively consistent with the number of the blades, correspondingly, the The slider shaft is fixed on the end of the pole, the guide rod is provided with a slide rail for the slider shaft to slide, and one end of the guide rod is fixed to the blade shaft; the cycloid The propeller also includes a star link translation mechanism driven by the steering gear.

The star link translation mechanism includes a control rod, the main shaft has a central hole, the upper end of the control rod is directly pushed by the steering gear, and the middle part of the control rod passes through the central hole of the main shaft, so The lower end of the control rod is connected with the central axis of the star connecting rod.

A centripetal joint bearing matching the middle of the control rod is arranged in the central hole of the main shaft.

The central axis of the star-shaped connecting rod is provided with a groove, and a rod-end joint bearing matching the lower end of the control rod is arranged in the groove.

The guide rod slider mechanism is connected with the rotary box through a synchronous mechanism.

The synchronous mechanism includes a rotary box guide rail and a cross slider. The top surface and the bottom surface of the cross slider are respectively provided with grooves and bosses. The grooves and bosses of the cross slider are perpendicular to each other. The rotary box The guide rail is fixed on the bottom plate of the rotary box, the boss of the cross slider matches the guide rail of the rotary box, the bottom surface of the central shaft is provided with a boss, and the boss of the central shaft is matched with the cross The grooves of the sliders match.

The rotary box guide rail is located on the diameter line of the rotary box.

The effective length of the guide rail of the rotary box is greater than the difference between the radius of rotation of the blade and the effective length of a single pole.

There are two steering gears, and the two steering gears are arranged in two mutually perpendicular directions.

The slide rail is a bar-shaped through hole.

The invention provides a swing guide rod type cycloid propeller with an amplification mechanism, which can perfectly realize the swing law of the blades of the cycloid propeller, and at the same time realize the stepless change of the eccentricity in a large range, and realize the propulsion The force can change steplessly in direction and size within 360° range, which has excellent maneuverability. At the same time, its structure is simple and reliable, which can meet the requirements of practical engineering applications.

Description of drawings

The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

Fig. 1 is the structural representation of an embodiment of the swing guide rod type cycloid propeller of the present invention;

Fig. 2 is a schematic diagram of the internal structure of the revolving box in the embodiment of Fig. 1;

Fig. 3 is a working principle diagram of the mechanism realizing the swing guide rod;

Fig. 4 is a working principle diagram of the eccentricity enlargement realization mechanism and the synchronous rotation realization mechanism.

detailed description

As shown in Figure 1 and Figure 2, the swing guide rod type cycloid propeller with amplifying mechanism includes a motor 1, a rotary box 2, a blade 6 and at least one steering gear 3, and the motor is connected sequentially through driving gears, from The moving gear, the main shaft 4 and the connecting shaft 5 drive the rotary box 2 to rotate, and the upper end of the blade 6 has a blade shaft 61, and the blade shaft 61 is connected with the rotary box 2 through a bearing, and the rotary box 2 drives the blade 6 turn around.

As shown in Figure 2, a guide rod slider mechanism is provided in the revolving box, and the guide rod slider mechanism includes a star connecting rod 21, a slider shaft 22 and a guide rod 23, and the star connecting rod includes a central Shaft 211 and several struts 212, the number of the struts 212, slider shafts 22, and guide rods 23 are respectively consistent with the number of the blades 6, correspondingly, the slider shafts are fixed on the ends of the struts part, the guide rod is provided with a strip-shaped through hole for the slider shaft to slide, and one end of the guide rod is fixed to the blade shaft; the cycloidal propeller also includes the steering gear Driven star linkage translation mechanism. There are two steering gears, and the two steering gears are arranged in two mutually perpendicular directions. The two steering gears can respectively control the displacement of the control rod in two mutually perpendicular directions. The star connecting rod drives the guide rod and the blade fixedly connected on the guide rod to swing through the slider shaft.

The star link translation mechanism includes a control rod 7, the main shaft 4 has a central hole, the upper end of the control rod is directly pushed by the steering gear, and the middle part of the control rod passes through the central hole of the main shaft , the central hole of the main shaft is provided with a centripetal joint bearing 8 matching the middle part of the control rod, and the centripetal joint bearing 8 is used as a fulcrum of the control rod. The lower end of the control rod is connected with the central axis 211 of the star connecting rod. The central axis of the star-shaped connecting rod is provided with a groove, and a rod-end joint bearing 9 matching the lower end of the control rod is arranged in the groove. The control rod drives the star-shaped connecting rod to translate to make the guide rod swing, so as to control the regular swing of the blades and realize the change of the propulsion direction and size.

The guide rod slider mechanism is connected with the rotary box through a synchronous mechanism. The synchronous mechanism includes a rotary box guide rail 24 and a cross slide 25, the top surface and the bottom surface of the cross slide 25 are respectively provided with a groove and a boss, and the grooves and the boss of the cross slide are perpendicular to each other, so The rotary box guide rail 24 is fixed on the bottom plate 27 of the rotary box, the boss of the cross slider 25 is matched with the rotary box guide rail 24, and the bottom surface of the central shaft 211 is provided with a boss 26. The boss 26 of the central shaft matches the groove of the Oldham 25 . The rotary box guide rail 24 is located on the diameter line of the rotary box. The effective length of the rotary box guide rail 24 is greater than the difference between the radius of gyration of the blade and the effective length of a single pole, and the effective length of the rotary box guide rail is such that the cross slider can slide on the rotary box guide rail and stay away from the center The blade radius of gyration is the distance from the center of the blade shaft 61 to the center of the rotary disk 2, and the effective length of a single rod refers to the distance from the center of the star connecting rod to the center of the slider shaft.

The motor is fixed on the upper cover by bolts, the upper cover is fixed on the fixed mounting plate by bolts, and the fixed mounting plate is installed on the bottom of the ship. The output shaft of the motor is connected with the driving gear through a key, and the shaft end is fixed with a shaft end retaining ring at the lower part of the driving gear, and the shaft end retaining ring is fastened with screws. The driving gear meshes with the driven gear, the driven gear is fixed on the main shaft by screws, the main shaft is installed on the main shaft mounting block through angular contact ball bearings, and the main shaft mounting block is fixed on the fixed mounting plate by screws. Lip seal seal. The main shaft is fixedly connected to the connecting shaft by screws, the connecting shaft is fixedly connected to the cover plate of the rotary box by screws, the cover plate of the rotary box is fixedly connected to the rotary box by screws, and the rotary box is fixedly connected to the bottom plate of the rotary box by screws. The upper mounting seat of the blade is fixedly connected with the cover plate of the rotary box by screws, the lower mounting seat of the blade is fixedly connected with the bottom plate of the rotary box by screws, the shafts of the blades are respectively connected by angular contact bearings, and the angular contact bearings are respectively passed by the cover plate of the upper mounting seat of the blade and the shaft sleeve Fix the shaft end with a small round nut. A lip seal ring is used to seal between the lower mounting seat of the blade and the blade shaft.

The two steering gears are vertically fixed on the upper cover respectively. The two steering gears are respectively hinged to the upper end of the control rod. The middle part of the control rod is matched with the inner ring of the radial joint bearing. The outer ring of the radial joint bearing is fixed on the main shaft. The end is fixed by a lever fixing block. The lower end of the control rod cooperates with the inner ring of the rod end joint bearing, the outer ring of the rod end joint bearing is fixed on the bearing mounting block, the bearing mounting block is hinged with the star connecting rod, and an anti-off cover is installed at the upper end of the star connecting rod center to prevent the bearing from being installed The block comes out, and the anti-off cover plate is fixed on the star connecting rod by screws.

The two steering gears reversely control the displacement of the center of the star-shaped connecting rod in two directions perpendicular to each other through the control rod. The synchronous rotation of the star connecting rod and the rotary box can be realized through the cross slider mechanism. The end of the star-shaped connecting rod is hinged with the slider shaft, the slider shaft and the guide rod form a sliding connection, and the two ends of the slider shaft are fixed by washers and screw shaft ends. The guide rod is fixedly connected with the blade shaft through a key, and the shaft end of the guide rod on the blade shaft is fixed by a shaft shoulder and a shaft sleeve. The star connecting rod drives the blade shaft to swing according to the cycloidal law through the slider shaft and the guide rod in the swing guide rod mechanism. The overall structure of the invention is simple and reliable, and can perfectly realize the swing of the blades according to the cycloid law, and can make the eccentricity change steplessly in a large range, and can obtain excellent maneuverability.

The working principle of the cycloidal propeller with six blades is shown in Figure 3, assuming that point O is the central axis of the cycloidal propeller, points A, B, C, D, E, and F are the blade axes respectively, and the blade chord line The vertical line intersects at the control point P. When the blade rotates counterclockwise around the point O by an angle of α°, it can be assumed that the blade shaft is relatively stationary, and the control point P rotates clockwise by an angle of α° around the center O.

Using the swing guide rod mechanism, the control point P is designed as a slider, and the vertical lines PA, PB, PC, PD, PE, PF of the blade chord line are designed as guide rods, and are connected with the blade axes A, B, C, D, E , F connection, the slider P can rotate around the central axis O point, and drive the cycloid propeller blades to swing through the guide rod, so as to realize the working principle of the cycloid propeller. At this time, the distance of PO is the eccentricity, and the stepless change of the eccentricity can be realized by changing the position of the slider P, as shown in Figure 3.

If the swing guide rod mechanism is simply applied, in order to realize the continuous adjustment of the eccentricity within the range of 0 to 1, the structural size of the guide rod must be equal to the diameter, and the adjustable distance of the control point displacement must be within the radius range. In order to reduce the length of the guide rod and the displacement distance of the control point, on the basis of the swing guide rod mechanism, the star-shaped connecting rod WGHIJKL is designed to be hingedly connected with 6 sliders G, H, I, J, K, and L to realize the eccentricity amplification effect . When the center of the star link moves to point W, the distance OW between the center point W of the star link and the point O of the propeller center is the actual offset distance of the star link, as shown in Figure 2. At this time, the extension line of the guide rod intersects at point P, which is the actual control point of the blade, and point P is on the extension line of OW, and its distance OP from the center O is greater than OW. Therefore, the enlargement of the eccentricity can be realized through the star linkage mechanism, thereby reducing the structural size of the guide rod and the actual offset distance required by the central control point.

In order to ensure that the above-mentioned eccentricity amplification mechanism can accurately control the swing of the blades, it is necessary to ensure that the star-shaped connecting rod and the rotary box rotate synchronously, that is, to ensure that the WG of the star-shaped connecting rod part in Figure 4 is always parallel to the OA of the rotary box part. In addition, it is necessary to ensure that the star-shaped connecting rod can move within a certain range centered on the center O.

To this end, the cross slider mechanism is used to ensure the synchronous rotation of the star-shaped connecting rod and the rotary box, as shown in Figure 4 (O is the center of the rotary box, P is the control point, and points A, B, C, D, E, and F are the blades. Axis, PA, PB, PC, PD, PE, PF are guide rods, W point is the center of star connecting rod, G, H, I, J, K, L are sliders, Q is cross slider, MN is The guide rail on the rotary box, WG is the guide rail on the star connecting rod). The upper slider of the cross slider Q forms a moving pair with the guide rail WG on the star-shaped connecting rod, and the lower slider and the slide rail MN on the rotary box form a moving pair, so as to ensure that the star-shaped connecting rod can move in the horizontal plane X-axis, Y The shaft moves within a certain distance in both directions, and ensures that the star-shaped connecting rod and the rotary box are always kept parallel, that is, the synchronous rotation of the star-shaped connecting rod and the rotary box is realized.

In the above realization mechanism, the eccentricity and direction of the cycloid propeller can be continuously adjusted by controlling the position of the center W of the star-shaped connecting rod, so that the blades can swing regularly.

Claims (10)

1. A swing guide rod type cycloid propeller with an amplifying mechanism, including a motor, a rotary box, blades and at least one steering gear, the motor drives the rotary box to rotate through a main shaft and a connecting shaft, and the upper end of the blade has a The blade shaft, the blade shaft is connected with the rotary box through a bearing, and it is characterized in that: a guide rod slider mechanism is provided in the rotary box, and the guide rod slider mechanism includes a star connecting rod, a slider shaft and Guide rod, the star-shaped connecting rod includes a central shaft and several struts, the number of the struts, slider shafts, and guide rods is respectively consistent with the number of the blades, and correspondingly, the slider shaft is fixed on the The end of the pole, the guide rod is provided with a slide rail that can slide the slider shaft, and one end of the guide rod is fixed to the blade shaft; the cycloidal propeller also includes a Steering gear driven star link translation mechanism. 2. The swing guide rod type cycloid propeller with amplifying mechanism according to claim 1, characterized in that: the star link translation mechanism includes a control rod, the main shaft has a central hole, and the control rod The upper end of the control rod is directly pushed by the steering gear, the middle part of the control rod passes through the central hole of the main shaft, and the lower end of the control rod is connected with the central axis of the star connecting rod. 3. The swing guide rod type cycloid propeller with amplifying mechanism according to claim 2, characterized in that: the center hole of the main shaft is provided with a centripetal joint bearing matching the middle part of the control rod. 4. The swing guide rod type cycloid propeller with amplifying mechanism according to claim 2, characterized in that: the central axis of the star-shaped connecting rod is provided with a groove, and the groove is provided with the The lower end of the control rod matches the rod end. 5. The swing guide rod cycloidal propeller with amplifying mechanism according to claim 2, characterized in that: the guide rod slider mechanism is connected with the rotary box through a synchronous mechanism. 6. The swing guide rod type cycloid propeller with amplifying mechanism according to claim 5, characterized in that: the synchronous mechanism comprises a rotary box guide rail and a cross slider, and the top surface and the bottom surface of the cross slider are respectively There are grooves and bosses, the grooves and bosses of the cross slider are perpendicular to each other, the guide rail of the rotary box is fixed on the bottom plate of the rotary box, the boss of the cross slider and the rotary box The guide rails are matched, the bottom surface of the central shaft is provided with a boss, and the boss of the central shaft matches the groove of the cross slider. 7. The swing guide rod type cycloid propeller with an amplification mechanism according to claim 6, wherein the guide rail of the revolving box is located on the diameter line of the revolving box. 8. The swing guide rod type cycloid propeller with amplifying mechanism according to claim 6, characterized in that: the effective length of the guide rail of the revolving box is greater than the difference between the radius of gyration of the blade and the effective length of a single pole. 9. The swing guide rod type cycloid propeller with amplifying mechanism according to claim 1, characterized in that there are two steering gears, and the two steering gears are arranged in two mutually perpendicular directions. 10. The swing guide rod type cycloidal propeller with an amplifying mechanism according to claim 1, wherein the slide rail is a bar-shaped through hole.