CN110329468B - Rotary preposed energy-saving conduit - Google Patents
Rotary preposed energy-saving conduit Download PDFInfo
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- CN110329468B CN110329468B CN201910521363.2A CN201910521363A CN110329468B CN 110329468 B CN110329468 B CN 110329468B CN 201910521363 A CN201910521363 A CN 201910521363A CN 110329468 B CN110329468 B CN 110329468B
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- Prior art keywords
- sleeve
- included angle
- transmission mechanism
- rotatable
- propeller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/28—Other means for improving propeller efficiency
Abstract
The invention discloses a rotatable preposed energy-saving catheter which comprises an outer transmission mechanism, a rotatable catheter component and an inner transmission mechanism, wherein the rotatable catheter component is connected with the outer transmission mechanism through a flange bolt or welded and is sleeved on the inner transmission mechanism in a following manner. According to the rotatable preposed energy-saving guide pipe, when the power transmitted by the power mechanism is large, the impact force between the propeller and water flow is large, the guide pipe and the propeller work simultaneously, the propeller can be prevented from being deformed or damaged, the service life of the propeller is prolonged, when the power transmitted by the power mechanism is small, the propeller works, the static guide pipe can pre-rotate the propeller, and the propelling efficiency of the propeller is improved.
Description
Technical Field
The invention relates to the technical field of a front energy-saving guide pipe of a propeller, in particular to a rotatable front energy-saving guide pipe.
Background
The propeller is a ship propeller which is characterized in that a blade rotates in the air to convert the rotating power of an engine into propelling force or two or more blades are connected with a hub, the backward surface of each blade is a spiral surface or is similar to the spiral surface, the ducted propeller is a propeller which is provided with a flow guide pipe around the propeller, namely a sleeve duct is arranged on the periphery of the propeller, the longitudinal section of the duct is an airfoil shape, and the duct is arranged below a stern to form a uniform streamline body with a ship body. The front energy-saving guide pipe of the propeller is a circular pipe arranged at the front end of the propeller, a guide vane stator is arranged in the front energy-saving guide pipe, and the front energy-saving guide pipe is widely applied to transport ships and aims to prerotate the propeller and increase the propelling efficiency of the propeller. When the ship speed is below 20 knots, the energy-saving effect is obvious and can reach 6% -11%. However, when the transport ship needs to increase the sailing speed to more than 20 knots in some cases, the guide pipe basically fails, and the additional resistance generated is not favorable for the propulsion of the propeller. Therefore, under the condition, the front energy-saving guide pipe starts to rotate so as to increase the pre-rotation effect of the guide pipe on the propeller and further improve the propelling performance of the propeller. In addition, when the power that power unit transmitted is great, the impact force between screw and the rivers is great, causes the screw to take place deformation or impaired easily, and the rotation of pipe can disperse the impact force of rivers, guarantees that the screw normally works.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a rotatable prepositive energy-saving conduit. The energy-saving guide pipe is positioned in front of the propeller, the guide pipe and the propeller work simultaneously to improve the transmission efficiency of power, the front guide pipe can be switched between a static state and a rotating state according to the size of power transmitted by the power mechanism, when the power transmitted by the power mechanism is small, the guide pipe works in a spiral mode, the static guide pipe can have a pre-rotation effect, and the propelling efficiency of the propeller is improved.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.
A rotatable preposed energy-saving catheter comprises an outer transmission mechanism 1, a rotatable catheter component 2 and an inner transmission mechanism 3, wherein the rotatable catheter component 2 is connected with the outer transmission mechanism 1 through a flange bolt or welded connection and is sequentially sleeved on the inner transmission mechanism 3.
Further, the external transmission mechanism 1 comprises a connecting shaft 1-1, a first bevel gear 1-2, a second bevel gear 1-3 and an external rotating shaft 1-4; one end of the connecting shaft 1-1 is coaxially and fixedly sleeved with a first helical gear 1-2 and is arranged perpendicular to an outer transmission shaft 1-4, a second helical gear 1-3 is coaxially and fixedly sleeved at one end of the outer transmission shaft 1-4 and is meshed with the first helical gear 1-2, a power source provides power for the transmission mechanism, the connecting shaft 1-1 rotates to drive the first helical gear 1-2 to rotate, so that the second helical gear 1-3 is driven to rotate, and the second helical gear 1-3 rotates to drive the outer transmission shaft 1-4 to rotate.
Furthermore, the rotatable energy-saving conduit assembly 2 comprises a pulling and holding mechanism which is formed by a round sleeve 2-1 and a hexagonal sleeve 2-6 and has an included angle beta, an included angle alpha and an included angle theta triangle, wherein the round sleeve 2-1 is a stepped sleeve with large and small outer diameters, 3U-shaped ear rings are uniformly arranged on the outer circumference of one end with the large outer diameter, a swing rod 2-2 is connected in each ear ring in a pin mode, the end face of the overhanging end of the swing rod 2-2 is connected with a counterweight 2-4, and one end with the small outer diameter is sleeved with a spring 2-5; the hexagonal sleeve 2-6 is internally provided with a large stepped hole and a small stepped hole, 3U-shaped ear rings are uniformly arranged on the circumferential surface of the middle part of the outer hexagonal sleeve, a pull rod 2-3 is connected with the ear rings in a pin mode, and the other end of the pull rod 2-3 is connected with the middle part of the swing rod 2-2 in a pin mode; the large hole end of the hexagonal sleeve 2-6 is sleeved on the small outer diameter of the circular sleeve 2-1 and props against the spring 2-5, the inner hole of the small hole end is provided with discontinuous threads 2-7, and the outer hexagonal is provided with a guide pipe 2-8.
Further, the counterweight 2-4 is a sphere.
Further, the guide pipes 2 to 8 are welded on the outer hexagon of the hexagonal sleeve 2 to 6 through the inner stator thereof.
Further, the included angle beta is an included angle between the central axis of the round sleeve 2-1 and the swing rod 2-2, and beta is 30 +/-5 degrees; the included angle alpha is an included angle between the swing rod 2-2 and the pull rod 2-3, and alpha is 135 degrees +/-5 degrees; the included angle theta is an included angle between the pull rod 2-3 and the central axis of the hexagonal sleeve 2-6, and theta is 15 degrees +/-5 degrees.
Further, the inner transmission mechanism 3 comprises a transmission shaft 3-1, one end of the inner transmission shaft 3-1, corresponding to the hexagonal sleeve 2-6, is provided with outer continuous threads 3-2 matched with discontinuous threads 2-7 arranged in an inner hole at a small hole end of the hexagonal sleeve 2-6, and the right end of the inner transmission shaft 3-1 is provided with a propeller 3-3.
Compared with the prior art, the invention has the beneficial effects that:
when power of power unit transmission is great, the impact force between screw and the rivers is great, the screw can be avoided taking place to deform or impaired to pipe and screw simultaneous working, the life of screw has been prolonged, adopt this kind of working method, not only can disperse rivers to the impact force of screw, and rotatory stator can make energy-conserving pipe prewhirl effect become good, this energy-conserving pipe of rotatable formula can carry out the switching of static and rotation state according to power unit transmission power's size, when power unit transmission power is less, for a spiral work, static pipe can prewhirl to the screw, the propulsive efficiency of screw is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of the combination of the rotating shaft, gears and external transmission shaft of the present invention.
Fig. 3 is a schematic view of a rotatable catheter assembly of the present invention.
Fig. 4 is a schematic view of the inner transmission shaft and the propeller of the present invention.
Fig. 5 is a schematic structural view of the hexagonal socket of the present invention.
Fig. 6 is a schematic view of the structure of the catheter of the present invention.
The reference numbers in the figures illustrate: 1. an external transmission mechanism 1-1. a connecting shaft; 1-2, a first bevel gear; 1-3. a second bevel gear; 1-4. outer rotating shaft; 2. a rotatable catheter assembly, 2-1. a round sleeve; 2-2, oscillating bar; 2-3, a pull rod; 2-4, a counterweight; 2-5. a spring; 2-6, a hexagonal sleeve; 2-7. discontinuous threads; 2-8, a conduit; 3. an inner transmission mechanism, 3-1. an inner transmission shaft; 3-2, external continuous thread; 3-3, propeller.
Detailed Description
The technical solutions in the embodiments of the present invention are 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 embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
As shown in fig. 1-6, a rotatable energy-saving catheter with a front-end structure comprises an outer transmission mechanism 1, a rotatable catheter component 2 and an inner transmission mechanism 3, wherein the rotatable catheter component 2 is connected with the outer transmission mechanism 1 through a flange bolt or by welding and is sequentially sleeved on the inner transmission mechanism 3. The external transmission mechanism 1 comprises a connecting shaft 1-1, a first bevel gear 1-2, a second bevel gear 1-3 and an external rotating shaft 1-4; one end of the connecting shaft 1-1 is coaxially and fixedly sleeved with a first helical gear 1-2 and is arranged perpendicular to an outer transmission shaft 1-4, a second helical gear 1-3 is coaxially and fixedly sleeved at one end of the outer transmission shaft 1-4 and is meshed with the first helical gear 1-2, a power source provides power for the transmission mechanism, the connecting shaft 1-1 rotates to drive the first helical gear 1-2 to rotate, so that the second helical gear 1-3 is driven to rotate, and the second helical gear 1-3 rotates to drive the outer transmission shaft 1-4 to rotate.
More specifically, the outer transmission shaft 1-4 in the outer transmission device 1 is horizontally arranged, and the connecting shaft 1-1 and the outer transmission shaft 1-4 are vertically distributed. The external transmission shaft 1-4 is meshed with the second bevel gear 1-3 through the first bevel gear 1-2 on the connecting shaft 1-1.
The rotatable energy-saving conduit assembly 2 comprises a pulling and holding mechanism which is formed by a round sleeve 2-1 and a hexagonal sleeve 2-6 and has an included angle beta, an included angle alpha and an included angle theta triangle, wherein the round sleeve 2-1 is a stepped sleeve with large and small outer diameters, 3U-shaped ear rings are uniformly arranged on the outer circumference of one end with the large outer diameter, a swing rod 2-2 is connected with the ear rings in a pin mode, a counterweight 2-4 is connected with the end face of the overhanging end of the swing rod 2-2, and a spring 2-5 is sleeved on one end with the small outer diameter; the hexagonal sleeve 2-6 is internally provided with a large stepped hole and a small stepped hole, 3U-shaped ear rings are uniformly arranged on the circumferential surface of the middle part of the outer hexagonal sleeve, a pull rod 2-3 is connected with the ear rings in a pin mode, and the other end of the pull rod 2-3 is connected with the middle part of the swing rod 2-2 in a pin mode; the large hole end of the hexagonal sleeve 2-6 is sleeved on the small outer diameter of the circular sleeve 2-1 and props against the spring 2-5, the inner hole of the small hole end is provided with discontinuous threads 2-7, and the outer hexagonal is provided with a guide pipe 2-8.
More specifically, the counterweight 2-4 is a sphere. The guide tubes 2-8 are welded to the hexagonal sleeves 2-6 via their inner stators. The included angle beta between the central axis of the round sleeve 2-1 and the swing rod 2-2 is 30 degrees +/-5 degrees, the included angle alpha between the swing rod 2-2 and the pull rod 2-3 is 135 degrees +/-5 degrees, and the included angle theta between the pull rod 2-3 and the central axis of the hexagonal sleeve 2-6 is 15 degrees +/-5 degrees. Preferably, the included angle beta between the central axis of the round sleeve 2-1 and the swing rod 2-2 is 30 degrees, the included angle alpha between the swing rod 2-2 and the pull rod 2-3 is 135 degrees, and the included angle theta between the pull rod 2-3 and the central axis of the hexagonal sleeve 2-6 is 15 degrees.
The inner transmission mechanism 3 comprises a transmission shaft 3-1, one end of the inner transmission shaft 3-1, corresponding to the hexagonal sleeve 2-6, is provided with outer continuous threads 3-2 matched with discontinuous threads 2-7 arranged in an inner hole at a small hole end of the hexagonal sleeve 2-6, and the right end of the inner transmission shaft 3-1 is provided with a propeller 3-3.
More specifically, when the propeller is rotating at high speed greater than 600r/min, the stationary ducts 2-8 lose their pre-swirl effect and additional thrust is required to be provided by the rotation of the ducts 2-8. The power source transmits power to the outer transmission shaft 1-4 through the connecting shaft 1-1, the rotating speed of the outer transmission shaft 1-4 is controlled to be larger than that of the inner transmission shaft 3-1, the rotating counterweight 2-4 generates centrifugal force, the spring 2-5 is compressed under the action of the centrifugal force, and the swing rod 2-2 rotates around a hinge point and is gradually unfolded. In the process of unfolding the swing rod 2-2, the swing rod 2-2 pulls the pull rod 2-3 and pulls the hexagonal sleeve 2-6 to move towards the direction close to the circular sleeve 2-1 through the pull rod 2-3, so that the guide pipe 2-8 is driven to move towards the direction close to the circular sleeve 2-1. Discontinuous threads 2-7 are arranged in the inner hole of the small hole end of the hexagonal sleeve 2-6, when the pulling and holding mechanism is unfolded, the swing rod 2-2 pulls the pull rod 2-3 and pulls the hexagonal sleeve 2-6 to move towards the direction close to the circular sleeve 2-1 through the pull rod 2-3, and therefore the discontinuous threads 2-7 arranged in the inner hole of the small hole end of the hexagonal sleeve 2-6 are matched with the outer continuous threads 3-2 arranged on the inner transmission shaft 3-1. At the moment, the power source is turned off, the inner transmission shaft 3-1 drives the guide pipe 2-8 to rotate, and the guide pipe and the propeller work simultaneously.
More specifically, the stationary ducts 2-8 provide a better pre-rotation when the propeller 3-3 is rotating at a low speed of less than 600 r/min. The power source outputs power to the connecting shaft 1-1, so that the outer transmission shaft 1-4 rotates in the direction opposite to the direction of the inner transmission shaft 3-1. At the moment, the transmission shaft 1-4 drives the rotatable conduit component 2 to rotate, the discontinuous threads 2-7 are arranged in the inner hole of the small hole end of the hexagonal sleeve 2-6, when the external transmission mechanism 1 rotates reversely, the discontinuous threads 2-7 are gradually rotated out of the external continuous threads 3-2 matched with the discontinuous threads, the hexagonal sleeve 2-6 moves towards the direction far away from the circular sleeve 2-1, the hexagonal sleeve 2-6 drives the pull rod 2-3 to move, the pull rod 2-3 drives the swing rod 2-2 to move, the pulling and holding mechanism is tightened, and the spring 2-5 is gradually restored to the original state. At this point, the power source is turned off, the ducts 2-8 stop rotating, the propellers work alone, and the ducts pre-swirl the propellers.
The working principle of the invention is as follows: when the invention works, when the rotating speed of the propeller 3-3 is more than 600r/min, the power source provides power for the transmission mechanism, the rotating speed of the outer transmission shaft 1-4 is kept equal to that of the inner transmission shaft 3-1, the speed of the pulling and holding mechanism rotating around the central axis of the outer transmission shaft 1-4 is higher, at this time, the counterweight 2-4 rotates at high speed, under the action of centrifugal force, the spring 2-5 contracts, the swing rod 2-2 rotates around the pin joint and gradually expands, in the process of unfolding the swing rod 2-2, the swing rod 2-2 pulls the pull rod 2-3 and pulls the hexagonal sleeve 2-6 to move towards the round sleeve 2-1 through the pull rod 2-3, thus, discontinuous threads 2-7 arranged on the inner hole of the small hole end of the hexagonal sleeve 2-6 are matched with the external continuous threads 3-2 of the internal transmission shaft 3-1. At this time, the power source is turned off, and the guide pipe 2-8 and the propeller 3-3 rotate at the same speed. When the rotating speed of the propeller is less than 600r/min, the power source provides power for the external transmission mechanism 1. The outer drive shaft 1-4 drives the rotatable conduit assembly 2 to rotate in a direction opposite to the inner drive shaft 3-1. Discontinuous threads 2-7 arranged in an inner hole of a small hole end of a hexagonal sleeve 2-6 in the rotatable catheter component 2 are gradually separated from outer continuous threads 3-2 on an inner transmission shaft 3-1 in reverse rotation to drive the hexagonal sleeve 2-6 to move in a direction far away from the circular sleeve 2-1, the hexagonal sleeve 2-6 drives a pull rod 2-3 to move, the pull rod 2-3 drives a swing rod 2-2 to move, a pulling and holding mechanism is tightened, and a spring 2-5 is restored. At this point the power source is turned off and the conduits 2-8 are stopped.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention; various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (3)
1. A rotatable preposed energy-saving conduit is characterized by comprising an outer transmission mechanism (1), a rotatable conduit assembly (2) and an inner transmission mechanism (3), wherein the rotatable conduit assembly (2) is connected with the outer transmission mechanism (1) through a flange bolt or welding and is sleeved on the inner transmission mechanism (3) in a following manner;
the external transmission mechanism (1) comprises a connecting shaft (1-1), a first helical gear (1-2), a second helical gear (1-3) and an external rotating shaft (1-4); one end of the connecting shaft (1-1) is coaxially and fixedly sleeved with a first helical gear (1-2) and is vertically arranged with an external transmission shaft (1-4), a second helical gear (1-3) is coaxially and fixedly sleeved at one end of the external transmission shaft (1-4) and is meshed with the first helical gear (1-2), a power source provides power for the transmission mechanism, the connecting shaft (1-1) rotates to drive the first helical gear (1-2) to rotate so as to drive the second helical gear (1-3) to rotate, and the second helical gear (1-3) rotates to drive the external transmission shaft (1-4) to rotate;
the rotatable catheter component (2) comprises a pulling and holding mechanism which is formed by a round sleeve (2-1) and a hexagonal sleeve (2-6) and has an included angle beta, an included angle alpha and an included angle theta triangle, wherein the round sleeve (2-1) is a stepped sleeve with large and small outer diameters, 3U-shaped ear rings A are uniformly arranged on the outer circumference of one end with the large outer diameter, a swing rod (2-2) is connected with the U-shaped ear rings A in a pin mode, a counterweight (2-4) is connected with the end face of the overhanging end of the swing rod (2-2), and a spring (2-5) is sleeved on one end with the small outer diameter; the hexagonal sleeve (2-6) is internally provided with a large stepped hole and a small stepped hole, the circumferential surface of the middle part of the outer hexagonal sleeve is equally provided with 3U-shaped ear rings B, a pull rod (2-3) is connected with the U-shaped ear rings B in a pin mode, and the other end of the pull rod (2-3) is connected with the middle part of the swing rod (2-2) in a pin mode; the large hole end of the hexagonal sleeve (2-6) is sleeved on the small outer diameter of the round sleeve (2-1) and props against the spring (2-5), the inner hole of the small hole end is provided with discontinuous threads (2-7), and the outer hexagonal is provided with a guide pipe (2-8);
the included angle beta is an included angle between the central axis of the round sleeve (2-1) and the swing rod (2-2), and beta is 30 degrees +/-5 degrees; the included angle alpha is an included angle between the swing rod (2-2) and the pull rod (2-3), and alpha is 135 degrees +/-5 degrees; the included angle theta is an included angle between the pull rod (2-3) and the central axis of the hexagonal sleeve (2-6), and theta is 15 degrees +/-5 degrees;
the inner transmission mechanism (3) comprises an inner transmission shaft (3-1), one end, corresponding to the hexagonal sleeve (2-6), of the inner transmission shaft (3-1) is provided with an outer continuous thread (3-2) matched with a discontinuous thread (2-7) arranged in an inner hole at the small hole end of the hexagonal sleeve (2-6), and the right end of the inner transmission shaft (3-1) is provided with a propeller (3-3).
2. Rotatable pre-bustle pipe according to claim 1, characterized in that said counterweights (2-4) are spheres.
3. Rotatable pre economizer conduit according to claim 1, characterized in that the conduit (2-8) is welded with its inner stator on the outer hexagon of the hexagonal sleeve (2-6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910521363.2A CN110329468B (en) | 2019-06-17 | 2019-06-17 | Rotary preposed energy-saving conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910521363.2A CN110329468B (en) | 2019-06-17 | 2019-06-17 | Rotary preposed energy-saving conduit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110329468A CN110329468A (en) | 2019-10-15 |
| CN110329468B true CN110329468B (en) | 2021-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910521363.2A Active CN110329468B (en) | 2019-06-17 | 2019-06-17 | Rotary preposed energy-saving conduit |
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| CN (1) | CN110329468B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7013069A (en) * | 1969-09-05 | 1971-03-09 | ||
| JPS50158089A (en) * | 1974-06-12 | 1975-12-20 | ||
| JPS56160196U (en) * | 1980-04-30 | 1981-11-28 | ||
| CN2054782U (en) * | 1989-09-02 | 1990-03-21 | 武汉水运工程学院 | Energy-saving device for tracking regulating operation of shipping main engine |
| DE4223570C1 (en) * | 1992-07-17 | 1993-09-16 | Herbert Prof. Dr.-Ing. 5100 Aachen De Schneekluth | Streamline control for variable pitch marine screw - has ring duct with smaller diameter than screw to reduce flow rate around hub and increase flow rate through propeller blades |
| CN202593838U (en) * | 2012-05-18 | 2012-12-12 | 大连船舶重工集团有限公司 | Ship hydrodynamic front guide wheel energy-saving device |
| JP6758210B2 (en) * | 2017-01-31 | 2020-09-23 | 三菱重工業株式会社 | Duct equipment and ships |
| CN109095313A (en) * | 2018-11-12 | 2018-12-28 | 杨传前 | Method is transported safely based on parallel hydraulic convection type lift car |
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2019
- 2019-06-17 CN CN201910521363.2A patent/CN110329468B/en active Active
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