CN217673147U

CN217673147U - Double-pitch propeller main propulsion system

Info

Publication number: CN217673147U
Application number: CN202221385233.4U
Authority: CN
Inventors: 徐志林; 周炳国; 何坚; 熊国庆
Original assignee: Hangzhou Advance Gearbox Group Co Ltd
Current assignee: Hangzhou Advance Gearbox Group Co Ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-10-28
Anticipated expiration: 2032-05-31

Abstract

The utility model discloses a two pitch screw owner propulsion systems, including the mesopore oar axle that has, the output shaft of minor axis and gear box, the both ends of minor axis link to each other with the output shaft and the oar axle of gear box respectively, the other end and the propeller hub of propeller shaft link to each other, the paddle is installed on the propeller hub, servo motor installs on the box of gear box, the connecting axle passes behind the mesopore of gear box output shaft with the power transmission of motor output to installing the electronic jar in the propeller shaft mesopore, the electric pole changes the power of motor output into linear reciprocating motion and is used for changing the pitch of paddle through the push-and-pull rod. The motor is arranged on the box body of the gear box, so that the motor can be observed and maintained conveniently at any time, and the connecting shaft, the electric driving pipe and the push-pull rod respectively penetrate through the middle hole of the output shaft of the gear box, the middle hole of the short shaft and the middle hole of the propeller shaft in the transmission process of the propeller, so that the whole propeller is small in size and compact in structure.

Description

Double-pitch propeller main propulsion system

Technical Field

The utility model relates to a boats and ships field especially relates to a two screw propeller main propulsion systems.

Background

For the trawler, two working conditions are mainly provided, namely a free sailing working condition and a trawl operation working condition; when designing a propulsion device of a trawler, the propulsion device of the trawler is expected to have high thrust generated by a propeller when the ship trails and also has high speed when the ship freely sails. No matter what kind of working condition the fishing boat is in, the host power can not be fully exerted to the fixed pitch propeller propulsion system with single pitch, so that the performance of the ship is poor.

Patent document CN110254675A discloses a ship adjustable pitch propeller and an electric control pitch adjusting mechanism thereof, which comprises a supporting shell, a bearing or a rolling body, a linear guide mechanism, a push-pull rod, a lead screw nut and a motor. The push-pull rod is positioned in a cavity inside the stern shaft and is integrally or separately connected with the screw rod, and the screw rod nut is assembled in the support shell through a bearing or a rolling body and is connected with the screw rod. The motor directly or indirectly drives the lead screw nut to rotate, the lead screw nut drives the lead screw to move, the lead screw drives the push-pull rod to move axially along the stern shaft under the pushing of the lead screw nut and the limitation of the linear guide mechanism, the linear guide mechanism limits the linear movement of the lead screw without rotating, and the push-pull rod drives the blades to rotate so as to adjust the angles of the blades and realize the pitch adjustment.

In the above patent document, the electrically controlled pitch adjusting mechanism includes a transmission sleeve and a transition sleeve, the stern shaft includes a first section and a second section, the linear guide mechanism includes a guide sleeve and a guide key, the guide sleeve is nested on an inner wall of a terminal of the first section, the guide key is disposed on an end portion of the push-pull rod, the guide sleeve and the guide key are mutually matched, the support housing includes a first flange and a second flange, the first flange and the second flange are opposite and fixed, a flange cavity is formed between the first flange and the second flange, the first flange is fixed on an end surface of the first section, the transmission sleeve is fitted between the second flange and the second section, the second section is connected with the output shaft, the bearing or the rolling element and the lead screw nut are both fitted in the flange cavity, the motor is a speed reduction motor and is located in the transmission sleeve, an encoder is disposed on one side of the motor, and one end of the lead screw nut extends into the transmission sleeve and is connected with the motor through the transition sleeve, so that the motor drives the lead screw nut to rotate through the transition sleeve.

Among the prior art, the uide bushing nests in the terminal inner wall of first district section, the motor is installed in the cavity of driving sleeve, like this because the restriction of motor volume, make the driving sleeve need have the installation of great size in order to satisfy the motor, the transmission route that so leads to the screw needs great space in order to install automatically controlled pitch adjustment mechanism, lead to the holistic installation degree of difficulty of screw great and need specific installation environment, furthermore, the motor is installed in the driving sleeve, and the cavity in the driving sleeve then is a relatively inclosed environment, so be unfavorable for the motor heat dissipation, and need just can take out the motor with driving sleeve and stern axle split when the motor overhauls, make the installation of motor and maintenance process more troublesome.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that the transmission path of the propeller needs a larger space and the motor is difficult to overhaul and radiate in the prior art, the utility model aims to provide a double-pitch propeller main propulsion system, the motor is arranged on a box body of a gear box which provides power for the propeller, thus being convenient for observing and overhauling the motor at any time and reducing the volume of a short shaft and a propeller shaft in the transmission process of the propeller; and the shaft is connected in the path of driving the blade to change the pitch, the electric cylinder and the push-pull rod respectively penetrate through a middle hole of an output shaft of the gear box, a middle hole of the short shaft and a middle hole of the propeller shaft in the transmission process of the propeller, so that the whole propeller is more compact and is more convenient to install.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a double-pitch propeller main propulsion system comprises a propeller hub provided with blades, a propeller shaft and a push-pull rod, wherein the push-pull rod penetrates through a middle hole of the propeller shaft and then is connected with a guide frame in the propeller hub, the push-pull rod makes linear reciprocating motion in the middle hole of the propeller shaft, the double-pitch propeller main propulsion system further comprises a gear box, a servo motor, a short shaft, a connecting shaft and an electric cylinder, output shafts of the propeller shaft, the short shaft and the gear box are respectively provided with a middle hole penetrating through the propeller shaft, the short shaft and the gear box are sequentially connected and communicated, the electric cylinder is arranged in the middle hole of the short shaft and is arranged on a box body of the gear box, one end of the connecting shaft is connected with an output end of the servo motor, the connecting shaft penetrates through the middle hole of the output shaft of the gear box and enters the middle hole of the short shaft and is connected with an input end of the electric cylinder, the electric cylinder converts rotation output by the motor into linear reciprocating motion and outputs the output end of the electric cylinder, and the output end of the electric cylinder is connected with the other end of the push-pull rod.

Preferably, the propeller shaft is provided with a stern tube, and the stern tube is connected with the ship body.

Preferably, the paddle shaft and the stub shaft are fixedly connected or integrally formed.

Preferably, the inner diameter of the central bore of the short shaft is greater than the inner diameter of the central bore of the paddle shaft.

Preferably, the output end of the gear box is connected with the power source through a high-elasticity coupling.

Preferably, the push-pull rod is hinged with the output end of the electric cylinder.

Preferably, the push-pull rod is in sliding fit with the propeller shaft through a sliding bearing.

Preferably, a sealing element for preventing the water from entering the ship body is arranged between the stern tube and the propeller shaft, and the sealing element adopts a labyrinth sealing structure.

Preferably, the short shaft is fixedly connected with the propeller shaft through a hydraulic coupling.

Preferably, the output shaft of the gearbox is connected to the stub shaft by a flange.

The technical scheme of the utility model beneficial effect does: 1) The motor for driving the pitch change of the propeller blades is arranged on the gear box for driving the propeller to rotate, so that the motor can be observed and maintained at any time conveniently, and the volume of a short shaft and a propeller shaft in the transmission process of the propeller is reduced; 2) Because the connecting shaft, the electric tube and the push-pull rod respectively penetrate through the middle hole of the output shaft of the gear box, the middle hole of the short shaft and the middle hole of the propeller shaft in the transmission process of the propeller, the whole volume of the propeller is smaller, the structure is more compact, and the propeller is more convenient to install; 3) The sealing element between the stern tube and the propeller shaft can prevent seawater from entering the ship body from the gap between the stern tube and the propeller shaft, and the stability of navigation is ensured.

Drawings

Fig. 1 is a schematic structural view of a main propulsion system of a double-pitch propeller.

Reference numerals: 1. a paddle; 2. a hub; 3. a push-pull rod; 4. a stern tube; 5. a paddle shaft; 6. a hydraulic coupling; 7. an electric cylinder; 8. a short axis; 9. a connecting shaft; 10. a gear case; 11. a servo motor; 12. high-elastic coupler.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

As shown in fig. 1, the main propulsion system of the double-pitch propeller comprises a blade 1, a propeller hub 2, a push-pull rod 3, a stern tube 4, a propeller shaft 5, a hydraulic coupling 6, an electric cylinder 7, a short shaft 8, a connecting shaft 9, a gear box 10, a servo motor 11 and a high-elastic coupling 12; wherein the propeller shaft 5, the stub shaft 8 and the output shaft of the gearbox 10 each have a central hole through them; an output flange is arranged on an output shaft of the gear box 10, one end of a short shaft 8 is connected with the output flange, the other end of the short shaft 8 is fixedly connected with one end of a propeller shaft 5 through a hydraulic coupling 6, a stern tube 4 is sleeved on the propeller shaft 5, the stern tube 4 is connected with a ship body, and the other end of the propeller shaft 5 is fixedly connected with a propeller hub 2; the servo motor 11 is installed on a box body of the gear box 10, the output end of the servo motor 11 is connected with one end of a connecting shaft 9, the connecting shaft 9 penetrates through a middle hole of an output shaft and a flange and enters a middle hole of a short shaft 8, the other end of the connecting shaft 9 is connected with the input end of an electric cylinder 7, the electric cylinder 7 converts rotation of the servo motor 11 into linear reciprocating motion and outputs the linear reciprocating motion through the output end of the electric cylinder 7, the output end of the electric cylinder 7 is hinged with one end of a push-pull rod, the push-pull rod penetrates through the middle hole of a propeller shaft 5 and then enters a propeller hub 2, the other end of the push-pull rod is connected with a guide frame in the propeller hub 2, and the push-pull rod drives a sliding block to move through the guide frame when moving axially, so that the pitch of a propeller is changed. With the arrangement, on one hand, the position of the sliding block in the propeller hub 2 can be changed through the motor, so that the thread pitch of the propeller blade 1 on the propeller is changed, two ends of the stroke of the sliding block respectively correspond to the two different thread pitches, namely the sailing working condition thread pitch and the trawl working condition thread pitch; and secondly, the push-pull rod is hinged with the output end of the electric cylinder 7, so that the influence of the mounting error, the manufacturing error, the vibration in the navigation process and other reasons on the push-pull rod can be reduced, and the stability in the navigation process is ensured.

Further preferably, the paddle shaft 5 and the short shaft 8 are fixedly connected or integrally formed; the inner diameter of the central bore of the stub shaft 8 is greater than the inner diameter of the central bore of the paddle shaft 5. So arranged and installed with the main push system.

Further preferably, the output end of the gear box 10 is connected to a power source through a high-elasticity coupling 12 to drive the propeller shaft 5 and the propeller blades 1 to rotate. So set up, high-elastic shaft coupling 12 can compensate axial displacement, radial displacement and the angle displacement of adjacent mechanical axis, transmits the moment of torsion through elastic element, and adjustable driving system's torsional characteristics can absorb vibrations effectively, reduces resonance rotational speed, improves the operating condition of shafting.

Further preferably, a sealing member for preventing the water from entering the ship body is arranged between the stern tube 4 and the propeller shaft 5, and the sealing member adopts a labyrinth sealing structure. So set up, prevent that the sea water from getting into the hull from the clearance of stern tube 4 and oar axle 5, guarantee the stability of navigation.

Further preferably, the push-pull rod is in sliding fit with the propeller shaft through a sliding bearing.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the invention, and that those skilled in the art may make variations, modifications, substitutions and alterations herein without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a two screw propeller main propulsion systems, is including installing propeller hub (2), oar axle (5) and push-and-pull rod (3) of paddle (1), and push-and-pull rod (3) link to each other with the guide bracket in propeller hub (2) after passing the mesopore of oar axle (5), and push-and-pull rod (3) are downthehole straight reciprocating motion, its characterized in that in oar axle (5): the electric power steering device is characterized by further comprising a gear box (10), a servo motor (11), a short shaft (8), a connecting shaft (9) and an electric cylinder (7), wherein output shafts of a paddle shaft (5), the short shaft (8) and the gear box (10) are respectively provided with a middle hole penetrating through the paddle shaft (5), the output shafts of the paddle shaft (5), the short shaft (8) and the gear box (10) are sequentially connected and communicated, the electric cylinder (7) is installed in the middle hole of the short shaft (8), the servo motor (11) is installed on a box body of the gear box (10), one end of the connecting shaft (9) is connected with the output end of the servo motor (11), the connecting shaft (9) penetrates through the middle hole of the output shaft of the gear box (10) to enter the middle hole of the short shaft (8) and is connected with the input end of the electric cylinder (7), the electric cylinder (7) converts rotation output by the motor into linear reciprocating motion and outputs through the output end of the electric cylinder (7), and the output end of the electric cylinder (7) is connected with the other end of the push-pull rod.

2. A double pitch propeller main propulsion system according to claim 1, characterised in that: the propeller shaft (5) is provided with a stern tube (4), and the stern tube (4) is connected with the ship body.

3. A dual pitch propeller main propulsion system according to claim 1, wherein: and a sealing element for preventing the ship body from water inflow is arranged between the stern tube (4) and the propeller shaft (5), and the sealing element adopts a labyrinth sealing structure.

4. A double pitch propeller main propulsion system according to claim 1, characterised in that: the paddle shaft (5) and the short shaft (8) are fixedly connected or integrally formed.

5. A double pitch propeller main propulsion system according to claim 1, characterised in that: the inner diameter of the middle hole of the short shaft (8) is larger than that of the middle hole of the paddle shaft (5).

6. A double pitch propeller main propulsion system according to claim 1, characterised in that: the output end of the gear box (10) is connected with a power source through a high-elastic coupler (12).

7. A double pitch propeller main propulsion system according to claim 1, characterised in that: the push-pull rod (3) is hinged with the output end of the electric cylinder (7).

8. A double pitch propeller main propulsion system according to claim 1, characterised in that: the push-pull rod (3) is in sliding fit with the paddle shaft (5) through a sliding bearing.

9. A double pitch propeller main propulsion system according to claim 1, characterised in that: the short shaft (8) is fixedly connected with the paddle shaft (5) through a hydraulic coupler (6).

10. A dual pitch propeller main propulsion system according to claim 1, wherein: the output shaft of the gear box is connected with a short shaft (8) through a flange.