CN115258114B

CN115258114B - Marine power propulsion unit of variable pipe

Info

Publication number: CN115258114B
Application number: CN202211177903.8A
Authority: CN
Inventors: 林建华
Original assignee: Qingdao Zhuoqijian New Machinery Co ltd
Current assignee: Qingdao Zhuoqijian New Machinery Co ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2022-12-09
Anticipated expiration: 2042-09-27
Also published as: CN115258114A

Abstract

The invention provides a variable duct marine power propulsion unit, which relates to the field of marine power, solves the problem that the conventional ducts are integrally and fixedly arranged on a ship body and can not be switched between the ducts and ductless propellers, comprises a propeller, a ship shaft shell and a duct, and also comprises: a reducing driving unit for controlling the reducing motion of the conduit; the guide pipe comprises a plurality of groups of pipe flaps which are annularly arranged along the propeller to form the guide pipe; the power component is arranged in the hull of the ship shaft and drives the synchronous transmission component to move, and the synchronous transmission component drives the multiple groups of telescopic execution components to synchronously move in a telescopic manner; the telescopic execution component is installed in the telescopic connecting piece, the telescopic execution component converts the rotation of the first helical gear into linear motion, the multiple groups of telescopic execution components control the multiple groups of telescopic connecting pieces to perform synchronous telescopic motion, the multiple groups of telescopic connecting pieces of the synchronous motion control the multiple groups of tube flaps to perform radial synchronous telescopic motion along the propeller respectively, and switching of the propeller between the catheter paddle and the catheter-free paddle is achieved.

Description

Marine power propulsion unit of variable pipe

Technical Field

The invention belongs to the technical field of marine power, and particularly relates to a variable-conduit marine power propulsion device.

Background

The ducted propeller is a propulsion tool of a ship, and is formed by adding a draft tube around a propeller. The guide pipe can accelerate the water flow at the propeller, so that the efficiency of the heavy-load propeller can be increased, and the guide pipe generates positive thrust. Is widely used on tugboats, push boats and trawlers at present.

In the process of optimally designing the guide pipe, the thrust and the moment of the guide pipe paddle are reduced along with the increase of the gap between the blade tip of the guide pipe paddle and the inner wall of the guide pipe, but in the prior art, the conventional guide pipe is integrally and fixedly arranged on a ship body and cannot slightly adjust the gap between the blade tip of the guide pipe paddle, sundries such as aquatic weeds and the like are easily clamped into the gap between the excessively small guide pipe paddle and the blade tip of the propeller, and the propeller is slightly deformed to cause the collision between the blade tip and the inner wall of the guide pipe to influence normal navigation.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a power propulsion device for a variable duct ship, which is used for solving the technical problem that the conventional duct paddle in the prior art cannot be directly switched between the duct paddle and the duct-free paddle.

In order to achieve the above and other related objects, the present invention provides a power propulsion device for a variable duct ship, including a propeller, a shaft housing, and a duct sleeved on the periphery of the propeller, further including: a reducing driving unit for controlling the reducing motion of the conduit;

the guide pipe comprises a plurality of groups of pipe flaps which are annularly arranged along the propeller to form the guide pipe;

the reducing driving unit comprises a plurality of groups of telescopic connecting pieces, a plurality of groups of telescopic executing parts, a synchronous transmission part and a power part, wherein one end of each telescopic connecting piece is fixedly connected with the inner wall of the corresponding pipe valve, and the other end of each telescopic connecting piece is fixedly connected to the outer shell of the ship shaft;

the power component is arranged in the ship shaft shell and connected with the synchronous transmission component, the power component drives the synchronous transmission component to move, and the synchronous transmission component drives a plurality of groups of telescopic execution components to synchronously extend and retract;

the synchronous transmission component comprises a fixed support, a rotating shaft, first helical gears, first straight gears, second straight gears and a plurality of groups of mounting frames, wherein the inner wall of a ship shaft shell is fixedly connected with the plurality of groups of mounting frames, the number of the groups of the mounting frames corresponds to the number of the groups of the telescopic execution components, the rotating shaft can be rotatably connected on the plurality of groups of the mounting frames, the first helical gears and the first straight gears are coaxially and fixedly mounted at two ends of the rotating shaft respectively, the fixed support is fixedly connected with the ship shaft shell, the second straight gears are rotatably clamped on the fixed support, the first straight gears are meshed with the second straight gears, the second straight gears are in transmission connection with the power component, and the plurality of groups of the first helical gears are in transmission meshing with the telescopic execution components respectively;

the number of the groups of the telescopic execution parts corresponds to the number of the groups of the telescopic connecting pieces, the telescopic execution parts are installed in the telescopic connecting pieces, the telescopic execution parts convert the rotation of the first helical gears into linear motion, the plurality of groups of the telescopic execution parts control the plurality of groups of the telescopic connecting pieces to perform synchronous telescopic motion, and the plurality of groups of the telescopic connecting pieces control the plurality of groups of the tube flaps to perform synchronous telescopic motion along the radial direction of the propeller respectively.

Optionally, the telescopic connection piece includes a first connection rod and a second connection rod, the first connection rod is fixedly connected to the hull, the second connection rod is fixedly connected to the pipe flaps, hollow structures are respectively formed in the first connection rod and the second connection rod, the first connection rod is sleeved outside the second connection rod, and the second connection rod is connected to the first connection rod in a sliding manner.

Optionally, the telescopic executing component comprises a screw and a second helical gear, the screw is arranged in a first connecting rod and a second connecting rod in a penetrating manner, the first connecting rod and the second connecting rod are limited to rotate relatively by a rotation limiting structure, one end of the screw penetrates through the second helical gear coaxially and fixedly connected behind the ship shaft shell, the screw is rotatably connected with the ship shaft shell, and the second connecting rod is in threaded connection with the screw.

Optionally, the inner wall of the first connecting rod is rectangular, and the outer wall of the second connecting rod corresponds to the inner wall of the first connecting rod in shape.

Optionally, the power component includes a motor, the motor is fixedly mounted on the inner wall of the ship shaft shell, and the output shaft of the motor is coaxially connected with the set of rotating shafts through a coupler.

Optionally, the catheter is enclosed by three sets of catheter valves, the three sets of valve arcs being the same.

Optionally, the fixed bolster includes annular base and spacing collar, annular base fixed mounting be in on the ship axle housing, the spacing collar cover is established form annular groove after on the annular base, the spacing collar with fixed connection can be dismantled to the annular base.

Optionally, the limiting ring and the annular base are both provided with threaded holes, and the limiting ring is fixedly mounted with the annular base through bolts.

Optionally, a plurality of groups of pipe flaps are provided with a fit clearance at the joints, the joints are fixedly provided with elastic sealing elements, the elastic sealing elements seal the fit clearance between the pipe flaps, the ship shaft shell is provided with a distance detection unit, and the distance detection unit measures the distance between the ship shaft shell and the inner wall of the pipe flaps.

Optionally, the resilient seal is a rubber pad.

As described above, the variable duct marine power propulsion device of the present invention has at least the following advantages:

1. the power component drives the synchronous transmission component to move, the synchronous transmission component synchronously drives a plurality of groups of second straight gears which are meshed with the synchronous transmission component through the first straight gears to rotate, the plurality of groups of second straight gears synchronously rotate and respectively drive a plurality of groups of first helical gears which are coaxially and fixedly installed to rotate synchronously, the plurality of groups of first helical gears which synchronously rotate are all meshed with the second helical gears in the telescopic execution component, the telescopic execution component converts synchronous rotating motion into synchronous telescopic motion, the plurality of groups of telescopic execution components control tube flaps to synchronously telescopic motion, so that the tube flaps are respectively axially far away from the propeller, and the catheter paddle is switched to a catheter-free paddle state.

2. The distance detection unit can detect the distance between the distance detection unit and the inner wall of the pipe valve, detected distance data can correct the movement of the pipe valve controlled by the motor, a closed-loop control system is formed to improve the accuracy of the movement of the pipe valve, meanwhile, because elastic sealing elements are arranged among the fit clearance of a plurality of groups of pipe valves, the integrity of the inner wall of the conduit can be ensured, meanwhile, the plurality of groups of pipe valves can continue to reduce the diameter of the conduit in a mode of extruding the elastic sealing elements, the clearance between the blade tips of the propeller and the inner wall of the conduit is finely adjusted, the blade tips of the conduit are made to be close to the inner wall of the conduit as much as possible, and the propelling efficiency of the propeller of the conduit is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the configuration of the present invention in the non-catheter paddle configuration;

FIG. 3 is a front view of the present invention;

FIG. 4 is a schematic diagram of the internal structure of the telescopic actuator according to the present invention;

FIG. 5 is an enlarged schematic view of region a in FIG. 4;

FIG. 6 is a schematic view showing the internal structure of the synchronous drive unit according to the present invention;

fig. 7 is an enlarged structural view of a region b in fig. 6.

In the figure: 10. a propeller; 11. a telescopic connecting piece; 111. a first connecting rod; 112. a second connecting rod; 12. a pipe valve; 121. fitting gaps; 122. a rubber pad; 13. a shaft housing; 130. a groove; 151. a screw; 161. a fixed bracket; 1610. an annular base; 1611. a limiting ring; 162. a rotating shaft; 163. a first helical gear; 164. a second helical gear; 165. a first straight gear; 166. a second spur gear; 168. a motor; 169. and (7) mounting frames.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure of the present invention.

Please refer to fig. 1 to 5. It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions of the present disclosure, so that the present disclosure is not limited to the technical essence, and any modifications of the structures, changes of the ratios, or adjustments of the sizes, can still fall within the scope of the present disclosure without affecting the function and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are used for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms may be changed or adjusted without substantial change in the technical content.

The following examples are for illustrative purposes only. Various embodiments may be combined, and are not limited to only those presented in the following single embodiment.

Example 1:

referring to fig. 1 to 5, a power propulsion device for a variable duct ship includes a propeller 10, a shaft housing 13, and a duct sleeved on the periphery of the propeller 10, and further includes: a reducing driving unit for controlling the reducing motion of the conduit;

the pipe includes multiunit tube lamella 12, multiunit tube lamella 12 is arranged to the ring along screw 10 and is formed the pipe, further multiunit tube lamella 12 size can evenly set up, also can multiunit tube lamella 12 is not of uniform size, multiunit tube lamella 12 is synchronous radial outside or radial inside removal, make the reducing of pipe, change the clearance of 10 tips of screw and pipe inner wall, realize the switching between pipe oar and no pipe oar, can prevent simultaneously that debris such as pasture and water are gone into to 10 tips of screw and pipe inner wall clearance card.

Reducing drive unit includes multiunit telescopic connection piece 11, the flexible executive component of multiunit, synchronous transmission part and power unit, 11 one end of telescopic connection piece and 12 inner wall fixed connection of tube flaps, and 11 other end fixed connection of telescopic connection piece are on beam shell 13, and furtherly, a set of tube flaps 12 also can carry out fixed mounting through multiunit telescopic connection piece 11, further increases the installation strength.

The power component is arranged in the ship shaft shell 13 and is connected with the synchronous transmission component, the power component drives the synchronous transmission component to move, and the synchronous transmission component drives the multiple groups of telescopic execution components to synchronously move in a telescopic manner.

The synchronous transmission component comprises a fixed support 161, a rotating shaft 162, a first helical gear 163, a first straight gear 165, a second straight gear 166 and a plurality of groups of mounting frames 169, the inner wall of the ship shaft shell 13 is fixedly connected with the plurality of groups of mounting frames 169, the number of groups of mounting frames 169 corresponds to the number of groups of telescopic execution components, the rotating shaft 162 can be rotatably connected to the plurality of groups of mounting frames 169, two ends of the rotating shaft 162 are respectively and coaxially and fixedly provided with the first helical gear 163 and the first straight gear 165, the fixed support 161 is fixedly connected with the ship shaft shell 13, the second straight gear 166 is rotatably clamped on the fixed support 161, the first straight gear 165 is meshed with the second straight gear 166, the second straight gear 166 is in transmission connection with the power component, and the plurality of groups of first helical gears 163 are in transmission meshing with the telescopic execution components respectively.

The synchronous transmission component synchronously drives a plurality of groups of second straight gears 166 meshed with the synchronous transmission component to rotate through a first straight gear 165, the plurality of groups of second straight gears 166 synchronously rotate to respectively drive a plurality of groups of first helical gears 163 coaxially and fixedly installed with the synchronous transmission component to synchronously rotate, the plurality of groups of first helical gears 163 synchronously rotate to be meshed with second helical gears 164 in the telescopic execution component, the telescopic execution component converts synchronous rotating motion into synchronous telescopic motion, and the plurality of groups of telescopic execution components control pipe flaps 12 to synchronously extend and retract.

The flexible executive component group number corresponds with the 11 group numbers of telescopic connection spare, flexible executive component installs in telescopic connection spare 11, flexible executive component turns into linear motion with first helical gear 163's rotation, the flexible executive component of multiunit controls the 11 synchronous concertina movements of multiunit telescopic connection spare, synchronous motion's multiunit telescopic connection spare 11 control multiunit tube lamella 12 is respectively along the radial synchronous concertina movement of screw 10, realize the reducing motion of pipe, make the pipe switch between having the pipe oar and not having the pipe oar, increase the propulsive efficiency of boats and ships when freely sailing, adjustable convenience in screw 10 tip and pipe inner wall clearance is overhauld screw 10 simultaneously, also can prevent impurity card such as pasture and water from going into in the clearance of screw 10 tip and pipe inner wall.

Example 2:

referring to fig. 4 to 7, on the basis of embodiment 1, further,

the telescopic connecting piece 11 comprises a first connecting rod 111 and a second connecting rod 112, the first connecting rod 111 is fixedly connected with the ship body, the second connecting rod 112 is fixedly connected with the pipe flaps 12, hollow structures are arranged inside the first connecting rod 111 and the second connecting rod 112, the first connecting rod 111 is sleeved outside the second connecting rod 112, the second connecting rod 112 is connected with the first connecting rod 111 in a relative sliding mode, the telescopic connecting piece 11 to be pointed out can also be a telescopic structure more than two levels, and the telescopic connecting piece 11 is used for telescopically installing the pipe flaps 12.

The telescopic execution component comprises a screw rod 151 and a second bevel gear 164, the screw rod 151 is arranged in the first connecting rod 111 and the second connecting rod 112 in a penetrating mode, the first connecting rod 111 and the second connecting rod 112 are limited to rotate relatively through a rotation limiting structure, one end of the screw rod 151 penetrates through the ship shaft shell 13 and then is coaxially and fixedly connected with the second bevel gear 164, the screw rod 151 is rotatably connected with the ship shaft shell 13, the second connecting rod 112 is in threaded connection with the screw rod 151, the telescopic execution component converts rotation into linear motion, and optionally, the telescopic execution component can also be a motion conversion structure such as a cam mechanism and a worm gear.

Example 3:

referring to fig. 4 to 7, on the basis of embodiment 2, further,

the cross section of the inner hole of the first connecting rod 111 is rectangular, the outer wall of the second connecting rod 112 corresponds to the inner wall of the first connecting rod 111, the second connecting rod 112 cannot rotate around the first connecting rod 111, and it should be noted that the cross section of the inner hole of the first connecting rod 111 can be any shape except a non-circle center, so that the purpose of preventing relative rotation is achieved.

Example 4:

referring to fig. 4 to 7, on the basis of embodiment 1, further,

the power component includes a motor 168, the motor 168 is fixedly installed on the inner wall of the ship shaft housing 13, and an output shaft of the motor 168 is coaxially connected with one group of rotating shafts 162 through a coupling, it should be noted that the motor 168 can be coaxially connected with any rotating shaft 162 to realize power input of the motor 168.

Example 5:

referring to fig. 4 to 7, on the basis of embodiment 1, further,

the catheter is formed by surrounding three groups of tube flaps 12, the radians of the three groups of tube flaps 12 are the same, and the radians are the same, so that the acting force of water flow on the catheter is uniform.

Example 6:

referring to fig. 4 to 7, on the basis of embodiment 1, further,

the fixed support 161 comprises an annular base 1610 and a limit ring 1611, the annular base 1610 is fixedly installed on a ship shaft shell 13, the annular base 1610 is coaxial with the ship shaft shell 13, the axial direction of the annular base 1610 is of a stepped shaft structure, the limit ring 1611 is sleeved on the annular base 1610 and then forms an annular groove 130, firstly, a first straight gear 165 is sleeved on the annular base 1610 along the axial direction, then, the limit ring 1611 is sleeved on the annular base 1610, after the limit ring 1611 is detachably and fixedly connected with the annular base 1610, the first straight gear 165 is clamped by the annular base 1610 and the limit ring 1611 to limit the movement, and the first straight gear 165 can only rotate along the axial direction.

Further, threaded holes are formed in the limiting ring 1611 and the annular base 1610, and the limiting ring 1611 is fixedly mounted with the annular base 1610 through bolts.

Example 7:

referring to fig. 4 to 7, on the basis of embodiment 1, further,

the mutual connection of a plurality of groups of pipe flaps 12 is provided with a matching gap 121, the mutual connection of the pipe flaps 12 is fixedly provided with an elastic sealing element, the elastic sealing element seals the matching gap 121 between the pipe flaps 12, the ship shaft shell 13 is provided with a distance detection unit, and the distance detection unit measures the distance between the distance and the inner wall of the pipe flaps 12.

When the catheter paddle is switched to, the multiple groups of tube flaps 12 move inwards in a synchronous radial direction, the multiple groups of tube flaps 12 are contacted again to form a catheter, the distance detection unit can detect the distance between the multiple groups of tube flaps 12 and the inner wall of the tube flaps 12, detected distance data can correct the movement of the tube flaps 12 controlled by the motor 168, and a closed-loop control system is formed to improve the movement accuracy of the tube flaps 12.

Because the elastic sealing elements are arranged among the matching gaps 121 of the multiple groups of tube flaps 12, the integrity of the inner wall of the conduit can be ensured, and meanwhile, in order to further improve the propelling efficiency of the conduit propeller, the gaps between the tips of the propeller 10 and the inner wall of the conduit can be finely adjusted by extruding the elastic sealing elements to continuously reduce the diameter of the conduit, so that the tips of the conduit blades are close to the inner wall of the conduit as much as possible.

Still further, the elastic sealing element is a rubber pad 122, and it should be noted that the elastic sealing element is used to make the inner wall of the catheter surrounded by the multiple groups of tube segments 12 still have integrity after the variable diameter movement, and the elastic sealing element may also be a telescopic structure.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a marine power advancing device of variable pipe, includes screw (10), ship axle housing (13) and establishes the pipe of screw (10) periphery at cover, its characterized in that still includes: a reducing driving unit for controlling the reducing motion of the conduit;

the duct comprises a plurality of groups of tube flaps (12), and the tube flaps (12) are annularly arranged along the propeller (10) to form the duct;

the reducing driving unit comprises a plurality of groups of telescopic connecting pieces (11), a plurality of groups of telescopic executing parts, a synchronous transmission part and a power part, one end of each telescopic connecting piece (11) is fixedly connected with the inner wall of the corresponding pipe valve (12), and the other end of each telescopic connecting piece (11) is fixedly connected to the ship shaft shell (13);

the power component is arranged in the ship shaft shell (13), the power component is connected with the synchronous transmission component, the power component drives the synchronous transmission component to move, and the synchronous transmission component drives a plurality of groups of telescopic execution components to synchronously move in a telescopic mode;

the synchronous transmission component comprises a fixed support (161), a rotating shaft (162), a first helical gear (163), a first straight gear, a second straight gear and a plurality of groups of mounting frames (169), wherein the inner wall of the ship shaft shell (13) is fixedly connected with the plurality of groups of mounting frames (169), the number of the groups of the mounting frames (169) corresponds to the number of the groups of the telescopic execution components, the plurality of groups of the mounting frames (169) can be rotatably connected with the rotating shaft (162), the first helical gear (163) and the first straight gear are coaxially and fixedly mounted at two ends of the rotating shaft (162) respectively, the fixed support (161) is fixedly connected with the ship shaft shell (13), the second straight gear is rotatably clamped on the fixed support (161), the first straight gear is meshed with the second straight gear, the second straight gear is in transmission connection with the power component, and the plurality of groups of the first helical gear (163) are in transmission engagement with the telescopic execution component respectively;

the number of the groups of the telescopic execution parts corresponds to the number of the groups of the telescopic connecting pieces, the telescopic execution parts are installed in the telescopic connecting pieces, the telescopic execution parts convert the rotation of the first helical gears (163) into linear motion, the plurality of groups of the telescopic execution parts control the plurality of groups of the telescopic connecting pieces to perform synchronous telescopic motion, and the plurality of groups of the telescopic connecting pieces (11) which perform synchronous motion control the plurality of groups of tube flaps to perform radial synchronous telescopic motion along the propeller (10) respectively.

2. The power propulsion device for a variable conduit vessel according to claim 1, wherein: the telescopic connecting piece (11) comprises a first connecting rod (111) and a second connecting rod (112), the first connecting rod (111) is fixedly connected with the ship shaft shell (13), the second connecting rod (112) is fixedly connected with the pipe flaps (12), the first connecting rod (111) and the second connecting rod (112) are both internally provided with hollow structures, the first connecting rod (111) is sleeved outside the second connecting rod (112), and the second connecting rod (112) is connected with the first connecting rod (111) in a relative sliding mode.

3. The variable duct marine power propulsion device of claim 2, wherein: the telescopic execution component comprises a screw (151) and a second bevel gear (164), the screw (151) is arranged in a first connecting rod (111) and a second connecting rod (112) in a penetrating mode, the first connecting rod (111) and the second connecting rod (112) are limited to rotate relatively through a rotation limiting structure, one end of the screw (151) penetrates through the second bevel gear (164) which is coaxially and fixedly connected with the rear portion of the ship shaft shell (13), the screw (151) is rotatably connected with the ship shaft shell (13), and the second connecting rod (112) is in threaded connection with the screw (151).

4. A variable duct marine power propulsion unit according to claim 3, characterised in that: the inner cross section of the first connecting rod (111) is rectangular, and the outer wall of the second connecting rod (112) corresponds to the inner wall of the first connecting rod.

5. The variable duct marine power propulsion device of claim 1, wherein: the catheter is formed by surrounding three groups of catheter flaps (12), and the radians of the three groups of catheter flaps (12) are the same.

6. The power propulsion device for a variable conduit vessel according to claim 1, wherein: fixed bolster (161) include annular base (1610) and spacing collar (1611), annular base (1610) fixed mounting be in on the ship axle housing (13), spacing collar (1611) cover is established form annular groove (130) after on annular base (1610), spacing collar (1611) with fixed connection can be dismantled to annular base (1610).

7. The variable duct marine power propulsion device of claim 6, wherein: threaded holes are formed in the limiting ring (1611) and the base (1610), and the limiting ring (1611) is fixedly mounted with the base (1610) through bolts.

8. The variable duct marine power propulsion device of claim 1, wherein: the multi-group pipe lamella (12) interconnect department opens there is fit clearance (121), pipe lamella (12) interconnect department fixed mounting has elastic sealing element, fit clearance (121) between elastic sealing element sealing pipe lamella (12), install apart from detecting element on ship axle housing (13), apart from detecting element measurement and the interval of pipe lamella (12) inner wall.

9. The variable duct marine power propulsion device of claim 8, wherein: the resilient seal is a rubber pad (122).