CN220010056U - Deformable propeller duct - Google Patents

Abstract

The utility model discloses a deformable propeller duct, which comprises a duct shell, a propeller frame, a front telescopic cone, a rear telescopic cone and a ring gear, wherein the duct shell is of a conical sleeve structure, the inside of the duct shell is hollow and comprises an inner shell and an outer shell, the propeller frame is covered at the front end of the duct shell, the propeller frame extends out from the center of the duct shell to form a plurality of upright posts, the three upright posts penetrate through the inner shell and the outer shell from the outer side to fixedly connect the inner shell and the outer shell, a cylindrical groove is formed between the inner shell and the outer shell, the front end face and the rear end face of the duct shell are respectively provided with a front notch and a rear notch which lead to the cylindrical groove, the ring gear is arranged in the middle of the cylindrical groove, the front telescopic cone is arranged in front of the ring gear, the ring gear is connected with the front telescopic cone through a front driving mechanism, the rear telescopic cone is arranged at the rear side of the ring gear, and the ring gear is connected with the rear telescopic cone through a rear driving mechanism; the utility model can adjust the size of the conduit so that the conduit can meet the requirements of navigational speed and increase the propulsion efficiency.

Description

Deformable propeller duct

Technical Field

The utility model belongs to the technical field of ship propellers, and particularly relates to a deformable propeller guide pipe.

Background

The conduit propeller is also called sleeve propeller, which is formed by adding an annular sleeve on the periphery of the propeller, and is a special propeller. The conduit propeller is less influenced by the change of external sea conditions when the marine ship is sailed, and the sleeve can play a role in protecting the propeller and increasing the stability, so that the conduit propeller is widely applied to ship types such as fishing boats, tugboats, commercial boats and the like.

The guide pipe propeller on the civil ship is mostly an accelerating guide pipe, is in a horn shape with a larger opening and a smaller tail part, and has the structure that the forward flow and the backward wake flow of the propeller can be improved, the water flow on the surface of the propeller is accelerated, and the propulsion efficiency of the propeller is improved; in addition, because the blade tip and duct clearance is small, the bypass flow caused by the pressure difference between the blade face and the blade back is greatly reduced, and the energy loss is reduced. Therefore, the accelerating type conduit propeller has the characteristics of large thrust, high efficiency, good performance in stormy waves and the like. For a conventional ducted propeller, the optimum dimensions of its ducts are also different for vessels at different speeds. However, the whole existing conduit is of a fixed structure, and the size cannot be changed, so that the whole thrust and torque of the conduit propeller cannot be changed by changing the conduit, and the whole propulsion efficiency is improved.

Disclosure of Invention

Aiming at the problems and the technical requirements, the utility model aims to provide a novel deformable conduit, the size of an opening at the front end and the length of the tail of the conduit are adjustable, the conduit can be suitable for the requirements of different sea conditions and navigational speeds by adjusting the size of the conduit, and the propulsion efficiency of a conduit propeller is increased.

The technical scheme of the utility model is as follows: the utility model provides a deformable screw pipe, includes pipe casing, screw frame, leading flexible cone, post-expansion cylinder and ring gear, the pipe casing is conical sleeve structure, inside cavity of pipe casing, including inlayer shell and outer shell, screw frame cover is established in pipe casing front end, a plurality of stands outwards stretch out from the center in the screw frame, three stand is respectively from outside through inlayer shell and outer shell with its fixed connection, make inlayer shell and outer shell keep coaxial unsettled, be a section of thick bamboo type groove between inlayer shell and the outer shell, the preceding notch and the back notch that lead to a section of thick bamboo type groove have been seted up respectively to the terminal surface around the pipe casing, ring gear sets up at a section of thick bamboo type groove middle part, the leading flexible cone is established in the ring gear the place ahead, connect through leading actuating mechanism between ring gear and the leading flexible cone, the post-expansion cylinder is established at the ring gear rear side, connect through post-actuating mechanism between the ring gear, can drive leading flexible cone notch outwards stretches out from the front notch when the ring gear rotates, perhaps drive post-expansion cone stretches out outwards from the back notch. In this scheme, set up the pipe casing to hollow structure, leading flexible awl section of thick bamboo and rearmounted flexible drum homoenergetic outwards stretch out or retract, in the shrink state, the whole appearance of pipe is the same with the pipe of integral type structure, but when needs change pipe structure according to sea state or navigation requirement, leading flexible awl section of thick bamboo can outwards stretch out, can increase the flow of the forward inflow of oar, rearmounted flexible drum outwards stretches out, can prolong the flow length of the wake behind the oar, reduces energy loss, increases the propulsion efficiency of pipe screw.

Further, the middle part of the barrel-shaped groove is provided with a motor, a driving gear and an annular base, the annular base is fixedly arranged around the inner shell, the inner side of the annular gear is rotationally connected to the annular base, the outer side face of the annular gear is provided with a driving gear ring, the motor is arranged on the inner side of the outer shell and is connected with the driving gear, the driving gear is meshed with the annular gear, and the motor drives the annular gear to rotate forwards or reversely around the annular base.

Further, the front driving mechanism comprises a plurality of crank rocker mechanisms which are arranged in parallel around the circumference, a conical gear ring is arranged on the front end face of the ring gear, and the front telescopic conical cylinder is connected with the conical gear ring through 6-9 crank rocker mechanisms.

Further, the front-mounted telescopic cone comprises a plurality of identical arc plates, the arc plates are spliced around the center to form a cone shape, two adjacent arc plates are movably connected through an arc slide buckle, and all the arc plates are pushed out towards the front end simultaneously under the pushing of the crank rocker mechanism, so that the diameter of the enclosed arc plates is gradually increased.

The arc slide buckle is adopted to movably connect the arc plates to form an integrated front telescopic cone, so that smooth pushing and diameter changing are conveniently realized, because the number of the arc plates is more, if each arc plate is independently pushed, the mechanical structure is quite complex, and the structures among the arc plates are mutually linked, therefore, the requirement of pushing and stretching can be met only by properly arranging a plurality of crank rocker mechanisms in the guide pipe.

Further, the center of the propeller frame is connected with the propeller, three stand columns of the propeller frame are connected to the front end of the guide pipe shell, arc plates at the installation positions of the stand columns are empty, the stand columns divide the front telescopic cone into three arc plate sections, and 2 or 3 crank rocker mechanisms are arranged at the rear end of each arc plate section. The installation position of the arc plate is staggered with the upright post, so that interference between the front telescopic cone and the upright post is avoided when the front telescopic cone extends outwards, and the space-avoiding effect is achieved.

Further, crank rocker mechanism includes spacing groove, catch bar, rocker and conical gear, and conical gear is connected with the conical gear meshing, and the spacing groove is along axial fixity setting in outer shell, and the catch bar passes from the spacing groove, and the arc board is connected to catch bar one end, and the other end is articulated with the rocker tip, and the eccentric articulated on the conical gear terminal surface of rocker other end, and ring gear drives conical gear and rotates, and conical gear passes through the front-end flexible cone concertina movement of rocker drive.

The ring gear drives the bevel gear, the bevel gear drives the crank rocker mechanism, the push rod is connected with the rear end of the arc plate, and a plurality of push rods simultaneously push all the arc plates integrally connected, so that the arc plates are simultaneously and outwards pushed in parallel and simultaneously spread circumferentially, and the expansion and the diameter change of the front-mounted telescopic cone are realized.

Further, a straight gear ring is arranged on the rear end face of the ring gear, a plurality of positioning holes are formed in the ring base in a penetrating mode along the axial direction, and each positioning hole corresponds to one rear driving mechanism; the rear driving mechanism comprises a straight gear and a rack, two ends of the straight gear are rotationally connected to the inner shell and the outer shell, the rack penetrates through the positioning hole, the tail end of the rack is connected with the rear telescopic cylinder, the tooth part of the rack is arranged on the side face, the straight gear is simultaneously meshed with the rack and the straight gear ring, the rack is driven to axially move when the ring gear rotates, and the rack drives the rear telescopic cylinder to telescopically move.

Further, the positioning hole is internally provided with a lug, the rack is correspondingly provided with a groove along the axial direction, and the lug and the groove are connected in a sliding embedded manner.

Further, the length of the arc plate is L, the radian of the two ends of the arc plate is inconsistent, and the radian of the front end is theta ₁ The radian of the rear end is theta ₂ The arc length of the front end is r, theta ₂ The following formula is satisfied: θ ₂ =θ ₁ （1-θ ₁ *L/r）。

Further, the front end radian of the arc plate is 0.14, and the front telescopic cone comprises 41 arc plates.

The front end of the arc plate is tightly connected in a contracted state, the radian of the front end is the same as that of the front end of the catheter shell, the shape of the catheter is consistent with that of a conventional catheter at the moment, and when the arc plate is completely extended, the circular outline formed after the rear end of the arc plate is unfolded is consistent with the front end of the catheter shell, so that the rear end of the arc plate can be matched with the front notch, and the radian of the rear end of the telescopic arc plate is slightly reduced relative to the front end.

Compared with the prior art, the utility model has the beneficial effects that: the guide pipe is internally provided with the hollow cylinder with the notch at the front and the rear on the basis of a conventional propeller, the shape of the guide pipe is the same as that of the conventional guide pipe, but the front telescopic cone and the rear telescopic cylinder arranged in the cylinder type groove can respectively extend towards the front end and the tail end of the guide pipe, the ring gear arranged in the middle of the guide pipe is a power output structure, the front telescopic cone can extend outwards by mechanical pushing and simultaneously expand the diameter of an opening, the collection of incoming flow is increased, the rear telescopic cylinder extends to increase the tail length, and the contraction effect of wake flow is enhanced; the larger conduit external dimension has larger accelerating effect, and the large-flow accelerating water flow enables the propeller to be in a larger speed field, so that the integral thrust and torque of the conduit propeller can be changed by adjusting the conduit external dimension under different navigational speeds or when different navigational requirements are needed.

Drawings

FIG. 1 is a schematic view of a deformable catheter of the present utility model in a contracted configuration;

FIG. 2 is a block diagram of a deformable catheter of the present utility model in a fully deployed state;

FIG. 3 is an overall block diagram of the interior of a catheter;

FIG. 4 is a detailed view of the interior of the catheter;

FIG. 5 is a block diagram of a duct housing and a propeller housing;

FIG. 6 is a block diagram of a crank and rocker mechanism;

marked in the figure as: the guide pipe casing 1, the inner casing 11, the outer casing 12, the front notch 13, the rear notch 14, the propeller frame 2, the upright post 21, the propeller 22, the front telescopic cone 3, the arc plate 31, the arc slide buckle 32, the crank rocker mechanism 4, the limit groove 41, the push rod 42, the rocker 43, the conical gear 44, the ring gear 5, the conical gear ring 51, the driving gear ring 52, the driving gear 521, the straight gear ring 53, the straight gear 531, the annular base 6, the rack 7 and the rear telescopic cylinder 8.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

The utility model relates to a deformable conduit, which comprises a conduit shell 1, a propeller frame 2, a front telescopic cone cylinder 3, a rear telescopic cylinder 8 and a ring gear 5, wherein the conduit shell 1 is of a conical sleeve structure, the interior of the conduit shell 1 is hollow and comprises an inner shell 11 and an outer shell 12, the propeller frame 2 is covered at the front end of the conduit shell 1, the propeller frame 2 extends out of the center to form a plurality of upright posts 21, the three upright posts 21 respectively penetrate through the inner shell 11 and the outer shell 12 from the outer side to fixedly connect the inner shell 11 and the outer shell 12, a cylindrical groove is formed between the inner shell 11 and the outer shell 12, a front notch 13 and a rear notch 14 leading to the cylindrical groove are respectively formed in the front end face and the rear end face of the conduit shell 1, and the ring gear 5 is arranged in the middle of the cylindrical groove.

The front telescopic cone 3 is arranged in front of the ring gear 5, the ring gear 5 is connected with the front telescopic cone 3 through a front driving mechanism, the rear telescopic cylinder 8 is arranged at the rear side of the ring gear 5, and the ring gear 5 is connected with the rear telescopic cylinder 8 through a rear driving mechanism.

The front driving mechanism comprises a plurality of crank rocker mechanisms 4 which are arranged in parallel around the circumference, a conical gear ring 51 is arranged on the front end face of the ring gear 5, and the front telescopic conical cylinder 3 is connected with the conical gear ring 51 through 6-9 crank rocker mechanisms 4. The front telescopic cone 3 comprises a plurality of identical arc plates 31, the arc plates 31 are spliced around the center to form a cone shape, two adjacent arc plates 31 are movably connected through an arc slide fastener 32, and all the arc plates 31 are pushed out towards the front end at the same time under the pushing of the crank rocker mechanism 4, so that the diameter of the enclosed arc plates is gradually increased. The center of the propeller frame 2 is connected with a propeller 22, three upright posts 21 of the propeller frame 2 are connected to the front end of the catheter housing 1, arc plates 31 at the installation positions of the upright posts 21 are empty, the upright posts 21 divide the front telescopic cone 3 into three arc plate sections, and 2 or 3 crank rocker mechanisms 4 are arranged at the rear end of each arc plate section. The installation position of the arc plate 31 is staggered with the upright post 21, so that interference between the front telescopic cone 3 and the upright post 21 is avoided when the front telescopic cone extends outwards, and the space-avoiding effect is achieved.

The rear end face of the ring gear 5 is provided with a straight gear ring 53, the ring base 6 is provided with a plurality of positioning holes in an axial penetrating way, and each positioning hole corresponds to a rear driving mechanism; the rear driving mechanism comprises a straight gear 53 and a rack 7, two ends of the straight gear 53 are rotationally connected to the inner shell and the outer shell, the rack 7 penetrates through the positioning hole, the tail end of the rack 7 is connected with the rear telescopic cylinder 8, the tooth part of the rack 7 is arranged on the side face, the straight gear 53 is simultaneously meshed with the rack 7 and the straight gear ring 53, the rack 7 is driven to axially move when the ring gear 5 rotates, and the rack 7 drives the rear telescopic cylinder 8 to telescopically move. The positioning hole is internally provided with a lug, the rack is correspondingly provided with a groove along the axial direction, and the lug is connected with the groove in a sliding embedded manner. The concave-convex jogged connection can ensure the parallel movement of the rack 7. The length of the rear telescopic cylinder 8 is selected according to the length of the catheter and the required size, and the length is not more than 30% of the length of the catheter housing 1. In order to ensure that the driving structure normally pushes the rear telescopic cylinder 8, a plurality of groups of straight gears 531 and racks 7 need to be symmetrically distributed along the circumferential direction of the ring gear 5, and the number of the groups of straight gears 531 and racks 7 is preferably 3-6.

In this scheme, the barrel-shaped groove middle part is equipped with a lantern ring shaped gear 5 as actuating mechanism only, barrel-shaped groove middle part is equipped with motor, driving gear 521 and annular base 6, annular base 6 is around the fixed setting of inlayer shell 11, the inboard rotation of ring gear 5 is connected on annular base 6, ring gear 5 lateral surface is equipped with drive ring gear 52, the motor sets up inboard at outer shell 12, the motor is connected with driving gear 521, driving gear 521 is connected with ring gear 5 meshing, motor drive ring gear 5 is around annular base 6 corotation or reversal, the front flexible cone 3 of simultaneous driving and the outside extension of rear flexible drum 8 when ring gear 5 rotates. The scheme can synchronously control the front telescopic cone 3 and the rear telescopic cylinder 8, so that the front telescopic cone and the rear telescopic cone can be simultaneously extended or simultaneously retracted, the control efficiency is high, and the flexibility is weaker.

In another preferred scheme, two sets of parallel ring gear driving structures which are independent of each other are adopted, the two ring gears respectively and independently control the front telescopic cone 3 and the rear telescopic cone 8, and by adopting the control mode, the overall shape change of the catheter can be more diversified, and the flexibility is good but the structure is slightly complex.

The crank rocker mechanism 4 comprises a limit groove 41, a push rod 42, a rocker 43 and a conical gear 44, the conical gear 44 is meshed with the conical gear ring 51, the limit groove 41 is fixedly arranged in the outer shell 12 along the axial direction, the push rod 42 penetrates through the limit groove 41, one end of the push rod 42 is connected with the arc plate 31, the other end of the push rod is hinged with the end of the rocker 43, the other end of the rocker 43 is eccentrically hinged on the end face of the conical gear 44, the conical gear 44 is driven by the ring gear 5 to rotate, and the conical gear 44 drives the front telescopic cone 3 to move in a telescopic manner through the rocker 43.

The front ends of the arc plates 31 are tightly connected in a contracted state, the radian of the front ends is the same as that of the front ends of the catheter shells, the shape of the catheter is consistent with that of a conventional catheter at the moment, when the arc plates 31 are fully extended, the circular outline formed by the expanded rear ends of the arc plates 31 is consistent with the front ends of the catheter shells, so that the rear ends of the arc plates can be matched with the front notch 13, and the radian of the rear ends of the telescopic arc plates is slightly reduced relative to the front ends; the front end radian of the arc plate is 0.14, and the front telescopic cone comprises 41 arc plates. The length of the arc plate is L, the radian of the two ends of the arc plate is inconsistent, and the radian of the front end is theta ₁ The radian of the rear end is theta ₂ The arc length of the front end is r, theta ₂ The following formula is satisfied: θ ₂ =θ ₁ （1-θ ₁ *L/r）。

The action principle of the utility model: the motor drives the driving gear 521 to rotate, the driving gear 521 drives the ring gear 5 to rotate around the ring base 6, the conical gear ring 51 drives the conical gear 44 to rotate, the rocker 43 pushes the push rod 42 outwards, the push rod 42 pushes the front telescopic conical cylinder 3 outwards along the axial direction under the action of the limit groove 41, and the arc plate 31 is simultaneously unfolded along the arc slide fastener 32 along the circumferential direction while pushing outwards along the axial direction, so that the incoming flow caliber is enlarged; in synchronization, the straight ring 53 at the other side of the ring gear 5 drives the straight gear 531 to rotate, the straight gear 531 drives the rack 7 to push out axially towards the rear end, the rack 7 pushes out the rear telescopic cylinder 8 from the rear notch 14, and in order to ensure the synchronization of the front and rear end telescopic, the rotation angle of the conical gear 44 should not exceed 180 ° when the rack 7 pushes out the rear telescopic cylinder 8 from full shrinkage until full expansion. When the telescopic device is required to be contracted, the motor drives the driving gear 521 to rotate reversely, so that the front telescopic cone 3 and the rear telescopic cylinder 8 are synchronously contracted into the catheter housing 1.

While the utility model has been described with respect to several preferred embodiments, the scope of the utility model is not limited thereto, and any changes and substitutions that would be apparent to one skilled in the art within the scope of the utility model are intended to be included within the scope of the utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims (10)

1. A deformable propeller conduit, characterized by: including pipe casing, screw frame, leading flexible cone, post-expansion cylinder and ring gear, the pipe casing is conical sleeve structure, inside cavity of pipe casing, including inlayer shell and outer shell, screw frame cover is established at pipe casing front end, a plurality of stands are outwards stretched out from the center to the screw frame, three stand pass inlayer shell and outer shell respectively from the outside and with its fixed connection, make inlayer shell and outer shell keep coaxial unsettled, be the barrel-type groove between inlayer shell and the outer shell, preceding notch and the back notch that lead to barrel-type groove have been seted up respectively to the terminal surface around the pipe casing, ring gear sets up at barrel-type groove middle part, and leading flexible cone is established in the ring gear the place ahead, is connected through leading actuating mechanism between ring gear and the leading flexible cone, and leading flexible cone of post-expansion cylinder is established in the ring gear rear side, through leading actuating mechanism connection between ring gear and the leading flexible cone of post-expansion cylinder, can drive when rotating outwards stretch out from the front notch, perhaps drive the leading flexible cone of post-expansion cylinder outwards stretches out from the back notch.

2. A deformable propeller conduit as claimed in claim 1, wherein: the middle part of the barrel-shaped groove is provided with a motor, a driving gear and an annular base, the annular base is fixedly arranged around the inner shell, the inner side of the annular gear is rotationally connected to the annular base, the outer side face of the annular gear is provided with a driving gear ring, the motor is arranged on the inner side of the outer shell and is connected with the driving gear, the driving gear is meshed with the annular gear, and the motor drives the annular gear to rotate forwards or reversely around the annular base.

3. A deformable propeller conduit as claimed in claim 2, wherein: the front driving mechanism comprises a plurality of crank rocker mechanisms which are arranged in parallel around the circumference, a conical gear ring is arranged on the front end face of the ring gear, and the front telescopic cone cylinder is connected with the conical gear ring through 6-9 crank rocker mechanisms.

4. A deformable propeller conduit as claimed in claim 3, wherein: the front telescopic cone comprises a plurality of identical arc plates, the arc plates are spliced around the center to form a cone shape, two adjacent arc plates are movably connected through an arc slide buckle, and all the arc plates are pushed out towards the front end simultaneously under the pushing of a crank rocker mechanism, so that the diameter of the enclosed arc plates is gradually increased.

5. A deformable propeller conduit as claimed in claim 4, wherein: the center of the propeller frame is connected with the propeller, three upright posts of the propeller frame are connected to the front end of the catheter shell, arc plates at the installation positions of the upright posts are empty, the upright posts divide the front telescopic cone barrel into three arc plate sections, and 2 or 3 crank rocker mechanisms are arranged at the rear end of each arc plate section.

6. A deformable propeller conduit as claimed in claim 5, wherein: the crank rocker mechanism comprises a limit groove, a pushing rod, a rocker and a conical gear, the conical gear is meshed with the conical gear ring, the limit groove is axially fixedly arranged in the outer shell, the pushing rod penetrates through the limit groove, one end of the pushing rod is connected with the arc plate, the other end of the pushing rod is hinged to the end of the rocker, the other end of the rocker is eccentrically hinged to the end face of the conical gear, the conical gear is driven to rotate by the annular gear, and the conical gear drives the front telescopic conical cylinder to move in a telescopic mode through the rocker.

7. A deformable propeller conduit as claimed in claim 6, wherein: the rear end face of the ring gear is provided with a straight gear ring, the ring base is provided with a plurality of positioning holes in an axial penetrating way, and each positioning hole corresponds to a rear driving mechanism; the rear driving mechanism comprises a straight gear and a rack, two ends of the straight gear are rotationally connected to the inner shell and the outer shell, the rack penetrates through the positioning hole, the tail end of the rack is connected with the rear telescopic cylinder, the tooth part of the rack is arranged on the side face, the straight gear is simultaneously meshed with the rack and the straight gear ring, the rack is driven to axially move when the ring gear rotates, and the rack drives the rear telescopic cylinder to telescopically move.

8. A deformable propeller conduit as claimed in claim 7, wherein: the positioning hole is internally provided with a lug, the rack is correspondingly provided with a groove along the axial direction, and the lug is connected with the groove in a sliding embedded manner.

9. A deformable propeller conduit as claimed in claim 8, wherein: the length of the arc plate is L, the radian of the two ends of the arc plate is inconsistent, and the radian of the front end is theta ₁ The radian of the rear end is theta ₂ The arc length of the front end is r, theta ₂ The following formula is satisfied: θ ₂ =θ ₁ （1-θ ₁ *L/r）。

10. A deformable propeller conduit as claimed in claim 9, wherein: the front end radian of the arc plate is 0.14, and the front telescopic cone comprises 41 arc plates.