CN215622624U

CN215622624U - Propeller and marine propeller

Info

Publication number: CN215622624U
Application number: CN202121371399.6U
Authority: CN
Inventors: 李兴; 唐彪; 万小康
Original assignee: Guangdong ePropulsion Technology Co Ltd
Current assignee: Guangdong ePropulsion Technology Co Ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-01-25
Anticipated expiration: 2031-06-18

Abstract

The utility model discloses a propeller and a marine propeller, wherein the propeller comprises a propeller hub and a blade connected with the propeller hub, and the blade comprises an installation part, a blade body and a first locking screw; the mounting part is connected with the propeller hub, and a first screw hole is formed in the mounting part; the paddle body is rotatably connected with the mounting part and is provided with a first mounting groove; first locking screw wear to establish first mounting groove with first screw threaded connection, in order with paddle body lock in the installation department. The propeller of the technical scheme of the utility model can adjust the pitch, can adapt to different working conditions and environments, and improves the efficiency and hydrodynamic performance of the marine propeller; simultaneously, the paddle of the screw of this scheme can be folded, can reduce the resistance of water in fold condition, can promote sailing boat's navigation speed.

Description

Propeller and marine propeller

Technical Field

The utility model relates to the technical field of marine propellers, in particular to a propeller and a marine propeller.

Background

Propeller propulsion is one of the common propulsion modes of marine propulsors. Since the efficiency of the propeller is closely related to the ship type, the ship load state, and the output power characteristics of the ship propeller, different ship types and ship propellers need to be configured with propellers of different pitches in order to maximize the efficiency of the propeller. In addition, during the running of the ship, if the ship is provided with a plurality of marine propellers, the power output of part of the marine propellers may need to be closed under the working conditions of light load and low speed, and the propellers of the marine propellers after being closed generate resistance to the running ship, so that the running of the ship is not facilitated. Particularly, a sailing boat is a light ship pushed by wind power, the sailing boat needs to be powered by the marine propeller when no wind exists, the sailing boat can sail on the water surface quickly by means of the wind power in an unpowered state when wind exists, and the unfolded propeller generates large resistance to be not beneficial to the advancing of the sailing boat. At present, the propeller of a general marine propeller is a fixed propeller, and cannot adapt to different working conditions and environments, so that the working efficiency and the hydrodynamic performance of the marine propeller are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a propeller, aiming at improving the adaptability of the propeller to different working condition environments and improving the efficiency and the power performance of a marine propeller.

In order to achieve the above object, the present invention provides a propeller including a hub and a blade connected to the hub, the blade including:

the mounting part is connected with the propeller hub and is provided with a first screw hole;

the paddle body is rotatably connected with the mounting part and is provided with a first mounting groove; and

the first locking screw penetrates through the first mounting groove and is in threaded connection with the first screw hole, so that the blade body is locked on the mounting portion.

Optionally, the first mounting groove is arc-shaped.

Optionally, a clamping groove is further formed in the first mounting groove, and the first locking screw is positioned in the clamping groove.

Optionally, two adjacent clamping grooves are arranged at intervals of a preset radian.

Optionally, the mounting portion is rotatably connected to the hub to rotatably switch the blades between a folded state and a deployed state.

Optionally, the number of the paddles is at least two, the mounting portion is further provided with a tooth portion, and every two adjacent paddles are meshed with each other through the tooth portion.

Optionally, the hub is provided with a first mounting groove, the mounting portion is disposed in the first mounting groove, the mounting portion is further provided with a second mounting hole, the hub is provided with a third mounting hole penetrating through the first mounting groove, and the mounting portion is rotatably connected with the hub through the second rotating shaft passing through the second mounting hole and the third mounting hole.

Optionally, a second screw hole is further formed in one side of the hub along the axial direction of the hub, the second screw hole is arranged in a position corresponding to the third mounting hole, and a second locking screw is connected to the second screw hole so as to lock the second rotating shaft in the third mounting hole.

Optionally, the bottom of the first mounting groove is further provided with an anti-collision block.

A marine propulsor comprising: the propeller of drive, motor and above-mentioned arbitrary embodiment, the drive with motor electric connection, the motor with the propeller is connected.

According to the technical scheme, in the propeller, the blade comprises an installation part, a blade body and a first locking screw, the installation part is connected with the propeller hub, and the blade body is rotatably connected with the installation part so as to change the installation angle of the blade relative to the propeller hub, so that the propeller can adapt to working conditions under different conditions, the efficiency of the marine propeller can be improved, and the optimal working performance can be achieved; still through being equipped with first screw at the installation department, be equipped with first mounting groove at the paddle body, first mounting groove and first screw threaded connection are worn to establish by first locking screw to lock the paddle body in the installation department, make the relative propeller hub of paddle body keep a fixed installation angle, when adjusting the installation angle of the relative propeller hub of paddle body, unscrew first locking screw, manual rotation paddle body can realize the transform of pitch, can convenience of customers's use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a propeller of the present invention;

FIG. 2 is a schematic view of the propeller of FIG. 1 at another angle;

FIG. 3 is a schematic view of the blades of the propeller of FIG. 1 in a folded state;

FIG. 4 is an exploded view of the propeller of FIG. 1;

FIG. 5 is a schematic view of the blade of the propeller of FIG. 1;

FIG. 6 is an exploded view of the blade of FIG. 5;

FIG. 7 is a schematic structural view of the blade body of the blade of FIG. 5;

FIG. 8 is a schematic view of the blade body of FIG. 7 at another angle;

FIG. 9 is a schematic structural view of the mounting portion of the blade of FIG. 5;

FIG. 10 is a schematic view of the hub of the propeller of FIG. 1;

figure 11 is a schematic view of the hub of figure 10 at another angle.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Propeller	214	Second mounting hole
100	Propeller hub	220	Blade body
				110	Second mounting groove	221	Base part
120	Third mounting hole	2211	First mounting groove
				130	Second screw hole	2212	Clamping groove
140	Locating slot	2213	First mounting hole
				150	Connecting hole	222	Blade
200	Blade	230	First locking screw
				210	Mounting part	300	Second rotating shaft
211	First screw hole	400	Second locking screw
				212	Toothed section	500	Anti-collision block
213	First rotating shaft

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a propeller.

The propeller is used for a marine propeller, particularly a marine propeller applied to a sailing boat, and in order to improve the efficiency and the power performance of the marine propeller in different working condition environments, the scheme provides the propeller with the adjustable pitch. The application of the propeller to a marine propeller of a sailing boat will be described in detail below as an example.

Referring to fig. 1 to 11, in the embodiment of the present invention, the propeller 10 includes a hub 100 and a blade 200 connected to the hub 100, wherein the blade 200 includes a mounting portion 210, a blade body 220, and a first locking screw 230. Mounting portion 210 is coupled to hub 100, and mounting portion 210 is provided with a first threaded bore 211. The paddle body 220 is rotatably connected to the mounting portion 210, and the paddle body 220 is provided with a first mounting groove 2211. The first locking screw 230 penetrates through the first mounting groove 2211 and is in threaded connection with the first screw hole 211, so as to lock the blade body 220 to the mounting portion 210.

In this embodiment, the hub 100 is a cylinder, but in other embodiments, the hub 100 may be a cone or a frustum. The hub 100 has opposite ends, the blades 200 are connected to one end of the hub 100 through the mounting portion 210, the other end of the hub 100 is used for connecting with a marine propeller, and the end of the hub 100 connected with the marine propeller is further provided with a connecting hole 150, and as shown in fig. 2, the connecting hole 150 is a spline hole.

Referring to fig. 7 and 8, the blade body 220 includes a vane 222 and a base 221, and it is understood that the vane 222 and the base 221 are integrally formed by machining in order to secure the strength of the blade body 220. The base 221 of the blade body 220 is rotatably connected to the mounting portion 210, so that the mounting angle of the blade 200 relative to the hub 100 can be adjusted, the mounting angle of the blade 200 relative to the hub 100 can be adjusted correspondingly in different working conditions, the pitch of the propeller 10 can be adjusted, different hydrodynamic performance of the propeller 10 can be realized, and the marine propeller can reach the optimal working state.

Referring to fig. 6, 8 and 9, in the present embodiment, the mounting portion 210 is provided with the first rotating shaft 213, the blade body 220 is provided with the first mounting hole 2213, the first rotating shaft 213 is inserted into the first mounting hole 2213, and the blade body 220 can rotate around the first rotating shaft 213 under the external force.

Referring to fig. 6, 7 and 9, the first mounting groove 2211 is opened at the base 221 of the blade body 220, and it can be understood that the first mounting groove 2211 is a through groove penetrating through the base 221, and the first locking screw 230 penetrates through the first mounting groove 2211 and is in threaded connection with the first screw hole 211, so as to lock the blade body 220 to the mounting portion 210. When the blade body 220 is adjusted, the first locking screw 230 is loosened, and the blade body 220 is rotated to a corresponding angle, so that the change of the pitch can be realized.

It can be understood that, in order to firmly lock the blade body 220 to the mounting portion 210, the number of the first mounting grooves 2211 is at least two, and one first locking screw 230 is correspondingly inserted into each first mounting groove 2211. In the present embodiment, as shown in fig. 7, two first mounting grooves 2211 are provided as an example, and the two first mounting grooves 2211 are provided on both sides of the blade 222 on the base 221.

According to the technical scheme, in the propeller 10, the blade 200 comprises the mounting part 210, the blade body 220 and the first locking screw 230, the mounting part 210 is connected with the propeller hub 100, the blade body 220 is rotatably connected with the mounting part 210, so that the mounting angle of the blade 200 relative to the propeller hub 100 is changed, the propeller can adapt to working conditions and environments under different conditions, the efficiency of a marine propeller can be improved, and the optimal working performance is achieved; still through being equipped with first screw 211 at installation department 210, be equipped with first mounting groove 2211 at paddle body 220, first mounting groove 2211 and first screw 211 threaded connection are worn to establish by first locking screw 230, thereby lock paddle body 220 in installation department 210, make paddle body 220 keep a fixed installation angle relative propeller hub 100, when adjusting the installation angle of paddle body 220 relative propeller hub 100, unscrew first locking screw 230, manual rotation paddle body 220, can realize the transform of pitch, can convenience of customers's use.

Further, in an embodiment, referring to fig. 5 and 7, the shape of the first mounting groove 2211 is arc-shaped, and the arc of the first mounting groove 2211 takes the axis of the first rotating shaft 213 as a center line, so that in the process of adjusting the mounting angle of the blade body 220, the blade body 220 can be rotated only by unscrewing the first locking screw 230 to unlock the blade body 220, and the whole first locking screw 230 does not need to be detached, which can further facilitate the user to adjust the blade 200, and can prevent the first locking screw 230 from being lost.

Further, in another embodiment, referring to fig. 5 to 9, in order to prevent the blade 200 from being continuously shocked by the driving device and water during the rotation of the blade 200, which may cause the blade body 220 to slide relative to the mounting portion 210, a plurality of locking grooves 2212 are further disposed in the first mounting groove 2211, and the first locking screw 230 is positioned in one locking groove 2212 to limit the blade body 220 from sliding relative to the mounting portion 210. The shape of the clamping groove 2212 is designed to be circular corresponding to the head of the first locking screw 230, the clamping groove 2212 is arranged on the first mounting groove 2211, and the number of the clamping grooves 2212 can be set according to actual working condition requirements. During locking, the stud of the first locking screw 230 is inserted into the first screw hole 211 to be in threaded connection therewith, the head of the first locking screw 230 is positioned in the positioning groove 2212, and the head of the first locking screw 230 acts as a limit for the positioning groove 2212, so that the blade body 220 can be prevented from sliding relative to the mounting portion 210. Further, by providing a plurality of the catching grooves 2212, when adjusting each blade 200 of the propeller 10, the first locking screw 230 of each blade 200 is positioned in the catching groove 2212 corresponding to the same position of the first mounting groove 2211, and it is possible to ensure that the rotation angle of each blade body 220 with respect to the mounting portion 210 is the same.

Further, in an embodiment, two adjacent detent grooves 2212 are disposed at intervals of a predetermined arc. It is understood that the predetermined arc corresponds to a common rotation angle of the blade body 220 relative to the hub 100, wherein the predetermined arc interval between every two adjacent detent grooves 2212 may be the same or different. In this embodiment, as shown in fig. 7, three detent grooves 2212 with the same interval preset radian are taken as an example in the first mounting groove 2211, each preset radian is taken as an example corresponding to a rotation angle of the blade body 220 of 10 °, and each first locking screw 230 is positioned by switching one detent groove 2212, and the rotation angle of the blade body 220 relative to the hub 100 is 10 °.

Further, in an embodiment of the present invention, in order to reduce the resistance of the propeller 10 in the water when the sailing boat is in the unpowered state and is planing on the water surface by means of the wind force, the mounting portion 210 is rotatably connected to the hub 100 to rotatably switch the blades 200 between the folded state and the unfolded state. Wherein, when blades 200 are in the deployed state, blades 200 are located on one side of hub 100 in the radial direction thereof, as shown in fig. 1; when the blade 200 is turned to be switched to the folded state, the blade 200 is located on one side of the hub 100 in the axial direction thereof, as shown in fig. 3. It can be understood that, with such a design, when the sailing boat is sailing on the water by wind, the blades 200 are turned from the unfolded state to the folded state, and the blades 200 are located on one side of the hub 100 along the axial direction thereof, that is, the direction of the blades 200 is substantially parallel to the water flowing direction, so that the resistance between the blades 200 and the water is greatly reduced, the sailing boat sailing speed on the water can be increased, and the sailing boat sailing time on the water can be prolonged.

Further, in an embodiment, referring to fig. 1, 3 and 9, the number of paddles 200 is at least two, and the mounting portion 210 is further provided with teeth 212, and each two adjacent paddles 200 are engaged with each other through the teeth 212. Wherein, through setting up tooth 212 at installation department 210, and every two adjacent paddle 200 are through tooth 212 meshing connection, so, under the exogenic action, tooth 212 meshing rotation of every adjacent paddle 200 for can rotate between every two adjacent paddles 200 in step, and the angle that every paddle 200 rotated is the same.

The number of the blades 200 is at least two, and of course, the number of the blades 200 is not too large, and may be two, three or four, for example, and the specific number of the blades 200 is determined according to the size of the hub 100, the working condition requirement of the sailing boat, the overall efficiency of the propeller, and other factors. In this embodiment, in propeller 10, two blades 200 are provided to face each other, and tooth portions 212 of mounting portions 210 corresponding to two blades 200 are engaged with each other. As shown in fig. 9, two rows of teeth 212 are provided on mounting portion 210 of each blade 200, and two rows of teeth 212 are offset in the rotation direction of mounting portion 210, so that the engagement between two blades 200 is more stable.

Referring to fig. 1 and 9 to 11, in the present embodiment, the hub 100 is provided with a second mounting groove 110, the mounting portion 210 of the blade 200 is inserted into the second mounting groove 110, the mounting portion 210 is provided with a second mounting hole 214, the hub 100 is provided with a third mounting hole 120 penetrating through the second mounting groove 110, the mounting portion 210 is rotatably connected to the hub 100 by penetrating the third mounting hole 120 through a second rotating shaft 300 and the second mounting hole 214, and the mounting portion 210 can rotate around the second rotating shaft 300, so as to drive the blade body 220 to rotate together. Wherein the number of second mounting holes 214 and third mounting holes 120 is the same as the number of blades 200.

It can be understood that the second mounting hole 214 is in clearance fit with the second rotating shaft 300, so that the blade 200 can rotate under the action of a small external force, when the sailing boat slides on the water surface by means of wind power in the unpowered state, the marine propeller stops at the moment, the blade 200 automatically rotates from the unfolded state to the folded state under the action of the impact force of water flow, and is stabilized in the folded state under the meshing constraint of the teeth 212; when the sailing boat provides a propelling force by the marine propeller, the marine propeller drives the hub 100 to rotate to generate a centrifugal force in a radial direction of the hub 100, the blades 200 automatically rotate from the folded state to the unfolded state against the resistance of water by the centrifugal force, and the blades 200 can be stabilized in the unfolded state under the continuous driving of the marine propeller and the engagement constraint of the teeth portions 212. So, under the use occasion of difference, but paddle 200 automatic switch-over between expansion state and fold condition need not artifical income water operation, very big made things convenient for the user, also promoted the security simultaneously.

Further, with continued reference to fig. 1 and fig. 9 to 11, in an embodiment, in order to lock the second rotating shaft 300 in the third mounting hole 120 of the hub 100, a second screw hole 130 is further provided on one side of the hub 100 along the axial direction thereof, the second screw hole 130 is disposed corresponding to the position of the third mounting hole 120, and a second locking screw 400 is connected in the second screw hole 130, so that, under the locking of the second locking screw 400, the second rotating shaft 300 is firmly locked in the third mounting hole 120, and the blade 200 is prevented from driving the second rotating shaft 300 to rotate under the impact of water flow. In order to further enhance the locking effect, the second rotating shaft 300 may further be provided with a positioning hole (not labeled), and the second locking screw 400 further extends into the positioning hole to further limit the rotation of the second rotating shaft 300.

It is understood that the positioning hole may be a through hole penetrating through the second shaft 300, or a blind hole opened in the second shaft 300. In addition, the positioning hole may be opened at the middle of the second rotating shaft 300, or may be opened at one side of the second rotating shaft 300, as shown in fig. 3, in the present embodiment, the positioning hole is opened at one side of the second rotating shaft 300.

Further, in an embodiment, referring to fig. 1, 3 and 10, in order to prevent the mounting portion 210 from colliding with the hub 100 due to an excessively large rotation angle of the blade 200 during the rotation switching process between the unfolded state and the folded state of the blade 200, the bottom of the second mounting groove 110 is further provided with an anti-collision block 500. So, through setting up anticollision piece 500, can avoid installation department 210 and propeller hub 100 directly to collide with, when paddle 200 pivoted angle was too big, anticollision piece 500 can play the effect of buffering to installation department 210's rotation, can play the effect of indirect protection to paddle 200.

The bottom wall of the second mounting groove 110 is provided with a positioning groove 140, the shape of the positioning groove 140 corresponds to the shape of the anti-collision block 500, the anti-collision block 500 is embedded in the positioning groove 140, and the anti-collision block 500 is in interference fit with the positioning groove 140 in order to prevent the anti-collision block 500 from being separated from the positioning groove 140. It can be understood that the material of the crash block 500 is plastic, which can prevent the crash block 500 from contacting the mounting portion 210 to generate scratches, thereby preventing the mounting portion 210 from being corroded by seawater or river water due to the scratches damaging the surface quality of the mounting portion 210, and prolonging the service life thereof.

The utility model further provides a marine propeller, which comprises a driver, a motor and a propeller 10, wherein the specific structure of the propeller 10 refers to the above embodiments, and the marine propeller adopts all technical solutions of all the above embodiments, so that the marine propeller at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein.

Wherein, driver and motor electric connection, the driver is used for driving motor's output shaft to rotate. It can be understood that the motor is drivingly connected to the propeller 10 through a transmission shaft, or an output shaft of the motor is directly connected to the propeller 10, so as to drive the propeller 10 to rotate to generate the propulsion force.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A propeller comprising a hub and a blade connected to the hub, wherein the blade comprises:

2. The propeller of claim 1 wherein said first mounting slot is arcuate in shape.

3. The propeller of claim 1 wherein said first mounting slot further defines a plurality of detent slots therein, said first locking screw being positioned in one of said detent slots.

4. The propeller of claim 3 wherein adjacent ones of said detent grooves are spaced by a predetermined arc.

5. The propeller of any one of claims 1 to 4 wherein the mounting portion is rotatably connected to the hub for rotational switching of the blades between a folded condition and an unfolded condition.

6. The propeller of claim 5 wherein said blades are at least two in number, said mounting portion further having teeth, each adjacent two of said blades being intermeshed with each other through said teeth.

7. The propeller of claim 5 wherein the hub defines a second mounting slot, the mounting portion is disposed in the second mounting slot, the mounting portion further defines a second mounting hole, the hub defines a third mounting hole extending through the second mounting slot, and the mounting portion is rotatably coupled to the hub by a second shaft passing through the second mounting hole and the third mounting hole.

8. The propeller of claim 7, wherein a second screw hole is further formed in one side of the hub in the axial direction of the hub, the second screw hole is disposed at a position corresponding to the third mounting hole, and a second locking screw is connected to the second screw hole to lock the second rotating shaft in the third mounting hole.

9. The propeller of claim 7 wherein the bottom of the second mounting groove is further provided with an anti-collision block.

10. A marine propulsor, comprising: a driver, a motor, and the propeller of any one of claims 1 to 9, the driver being electrically connected to the motor, the motor being connected to the propeller.