CN209870708U - High-power large-size controllable pitch propeller hub - Google Patents
High-power large-size controllable pitch propeller hub Download PDFInfo
- Publication number
- CN209870708U CN209870708U CN201920312469.7U CN201920312469U CN209870708U CN 209870708 U CN209870708 U CN 209870708U CN 201920312469 U CN201920312469 U CN 201920312469U CN 209870708 U CN209870708 U CN 209870708U
- Authority
- CN
- China
- Prior art keywords
- hub
- oil pipe
- shaft
- propeller
- piston rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model relates to a high-power and large-size controllable pitch propeller hub, one end of a propeller hub body is fixedly connected with a propeller shaft, and the other end is fixedly connected with a servo oil cylinder body; the front end shaft of the piston rod guide frame is arranged on the inner bushing of the propeller shaft hole, the rear end shaft penetrates through the rear end hole of the propeller hub body and then is fixedly connected with the piston, and each side surface of the outer polygonal boss in the middle of the piston rod guide frame is provided with a sliding groove; a sliding block is arranged in the sliding groove, an inner hole of the sliding block is matched and connected with a crank pin of a crank disk, and the crank disk is connected with a blade root flange through a blade root bolt; the piston rod guide frame is internally sleeved with an in-shaft double oil pipe, the inner oil pipe is communicated with the rear cavity, the outer oil pipe is communicated with the front cavity, when high-pressure oil is input into the rear cavity through the in-hub oil pipe, the piston and the piston rod guide frame move linearly along the axial line towards the fore end direction, a crank-slider mechanism formed by a crank disc and a slider drives the blades to rotate around the axial lines of the blades to the direction of increasing the screw pitch, and the forward turning and the distance adjusting are finished, otherwise, when the high-pressure oil is input into the front cavity through the out-hub oil pipe, the reverse turning and the distance adjusting are finished.
Description
Technical Field
The utility model relates to a boats and ships power advancing device, especially a advancing device's roll adjustment oar propeller hub.
Background
The controllable pitch propeller device is widely applied to the field of ships due to excellent control performance and ship, engine and propeller matching performance. The propeller hub is used as a final distance adjusting actuating mechanism of the distance adjusting device, is a core component in a distance adjusting propeller propulsion system, is used for connecting a propulsion shaft system and the blades, transmits the power of the propulsion shaft to the blades, and bears hydrodynamic thrust and torque borne by the blades. The reliability of the main components of the propeller hub is the key of the controllable pitch propeller, and is related to the vitality of the controllable pitch propeller and even the whole ship. Along with the demand of large ships for the controllable pitch propeller device, a novel high-power and large-size controllable pitch propeller hub is needed to meet the technical requirements of the large ships for the controllable pitch propeller device. Therefore, the pitch-adjustable propeller hub with a new structure is required to be adopted, so that the capability and reliability of the propeller hub mechanism for resisting high-strength load are improved, the requirement of the current ship field for a high-power pitch-adjustable propeller device is met, and the power application range of the pitch-adjustable propeller device is further widened. Aiming at the characteristics of a large-power and large-size propeller hub, the designed structure enables the strength and the rigidity to meet the use requirements, simultaneously reduces the weight of key parts, and enables an oil pipe in a shaft system to be disassembled and assembled from the rear end of the propeller hub. The controllable pitch propeller device is suitable for a ship power propulsion system.
Disclosure of Invention
The utility model provides a high-power, jumbo size roll adjustment oar hub to improve the ability and the reliability that the high strength load was resisted to the propeller hub mechanism, satisfy present boats and ships field to the demand of high-power roll adjustment oar device, and then promote the power application scope of roll adjustment oar device.
In order to achieve the above purpose, the technical scheme of the utility model is that: a high-power large-size controllable-pitch propeller hub is provided with at least one piston rod guide frame, a propeller hub body, a servo oil cylinder body, pistons and a plurality of crank discs corresponding to the number of blades, wherein one end of the propeller hub body is fixedly connected with a propeller shaft, and the other end of the propeller hub body is fixedly connected with the servo oil cylinder body; the front end shaft of the piston rod guide frame is arranged on the inner bushing of the propeller shaft hole, the rear end shaft penetrates through the rear end hole of the propeller hub body and then is fixedly connected with a piston positioned in the servo oil cylinder body, an outer polygonal boss corresponding to the number of the propeller blades is arranged in the middle of the piston rod guide frame, and a sliding groove is formed in each side surface of the outer polygonal boss; a sliding block is arranged in the sliding groove, and an inner hole of the sliding block is matched and connected with a crank pin of a crank disc arranged on the side face of the propeller hub body to form a crank-sliding block mechanism; the crank disc is connected with the blades through blade root flanges; the double-oil-tube type hydraulic pitch-adjusting device is characterized in that double oil tubes in the shaft are sleeved in the piston rod guide frame, an oil tube in a propeller hub of the double oil tubes in the shaft is communicated with the servo oil cylinder body and the piston, an oil tube outside the propeller hub of the double oil tubes in the shaft is communicated with a front cavity formed by the servo oil cylinder body and the piston, when high-pressure oil is input into a rear cavity through the oil tube in the propeller hub, the piston and the piston rod guide frame move linearly along the axial line towards the bow end, a crank-slider mechanism formed by the crank disc and the slider drives the blades to rotate around the axial lines of the blades in the direction of increasing the pitch, and the forward turning and the pitch adjustment are completed, otherwise, when the high-pressure oil is input.
Further, the hub of the high-power large-size controllable-pitch propeller is connected with a propeller shaft with an inner hole provided with two oil pipes through a shaft flange bolt and a torsion pin.
Further, the piston rod guide frame is processed into a hollow structure by adopting a forging piece, an inner polygonal boss is arranged inside the outer polygonal boss, and a weight reduction hole is formed in a stress part between the outer polygonal boss and the inner polygonal boss.
Furthermore, the front retaining wall and the back retaining wall on two sides of the sliding groove are connected through reinforcing ribs; and the platform at the opposite side of the sliding groove is provided with an anti-rotating strip.
Further, the crank disc is forged by a moulding bed forging die, and two die blind holes corresponding to the crank pins are formed in the moulding bed forging die and the moulding bed b.
Further, the hub inner oil pipe and the hub outer oil pipe of the shaft inner double oil pipe are plugged into the central hole of the piston rod guide frame shaft together, wherein the hub inner oil pipe is screwed into the threaded hole of the shaft inner double oil pipe joint; the oil pipe outside the propeller hub is directly inserted into an inner hole of the double-oil-pipe joint in the shaft, and the oil pipe outside the propeller hub is aligned to the notch groove on the double-oil-pipe joint in the shaft through a pre-installed anti-rotation screw; and screwing in the hexagon nut, placing a rectangular anti-loosening sheet in the hexagonal direction of the hexagon nut, and placing a hub outer oil pipe pressure ring, wherein the rectangular anti-loosening sheet is clamped in a pressure ring notch of the hub outer oil pipe pressure ring.
Furthermore, a one-way throttling check valve is mounted on the piston rod guide frame and consists of a valve body, a valve core, a spring, a gasket and a check ring, the valve core is arranged in the valve body, the spring is arranged between the valve core and the gasket and the check ring at the bottom of the valve body, and a spiral ring with a limiting and stopping function is arranged at the top of the valve body.
The utility model has the advantages that:
the utility model adopts a single oil cylinder, single crank-sliding block type rotating blade mechanism, which is suitable for the high-power hub with the hub diameter of 1000mm-2000mm and the power density PdensityAdapt to 1000-charge 1800kw/m2The utility model discloses a novel propeller hub has improved the bearing capacity of parts such as crank disc, piston rod according to the technical characterstic and the requirement of high-power, jumbo size propeller hub, has reduced quiet unbalanced moment, has alleviateed high-power propeller hub weight, has improved and has dismantled the processing property to high-power, jumbo size propeller hub's working property and reliability have been improved.
P is the shaft power and D is the propeller diameter.
Drawings
FIG. 1 is a longitudinal cross-sectional view of a high power, large size pitch propeller hub of the present invention;
FIG. 2 is a transverse cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is a three dimensional view of a piston rod guide in a prior art hub;
figure 4 is a three dimensional view of the piston rod guide of figures 1 and 2;
FIG. 5 is a three-dimensional view of the crank disk of FIGS. 1 and 2;
fig. 6 is a three-dimensional view of an example crank disk die of the present invention;
FIG. 7 is an enlarged partial view of the end of the oil pipe of FIG. 1;
FIG. 8 is a three-dimensional view of the hub outer oil tube pressure ring of FIG. 1;
FIG. 9 is the hydrostatic one-way throttle check valve of FIG. 1;
in the figure, 1, a piston rod guide frame, 1a lightening hole, 1b an anti-rotation strip, 1c an anti-rotation strip connecting screw, 1e, a small pentagon, 1f a reinforcing rib, 2, a shaft flange bolt, 3, an O-shaped sealing ring, 4, a blade sealing ring, 5, a crank disc, 5a crank disc crank pin, 5b a crank disc mould, 5c a mould pin hole, 7, a spiral ring, 8, a blade root bolt, 9, a propeller hub body, 10, a Y-shaped sealing ring, 11, a piston, 12, a servo oil cylinder body, 13, a flow guide cover, 14, a gasket, 15, an anti-loosening sheet, 16, a piston screw, 17, 18, an oil cylinder end cover, 19, a propeller hub outer oil pipe, 20, a hexagon nut, 21, a propeller hub inner oil pipe, a stop pin, 23, a propeller hub outer oil pipe, 24, 25, a shaft flange pin, 26, a shaft inner double-screw, 27, an oil pipe propeller shaft, a propeller shaft, 29, a propeller shaft flange, 30. root pin, 31, slider.
Detailed Description
In the following, the technical solution of the present invention is also applicable to 5-blade propeller hubs, and covers 4-blade pitch-adjustable propeller hubs, which are further described as follows with reference to the accompanying drawings:
as can be seen from fig. 1 and 2, a high-power, large-size controllable pitch propeller hub comprises: the device comprises a piston rod guide frame 1, a crank disc 5, a one-way throttling check valve 6, a blade root bolt 8, a propeller hub body 9, a piston 11, a propeller hub outer oil pipe pressing ring, a propeller hub inner oil pipe 21 and a propeller hub outer oil pipe 23.
The propeller hub is connected with a propeller shaft 28 with an inner hole provided with a shaft double oil pipe 26 through a shaft flange bolt 3 and a torsion pin 25, a servo oil cylinder body 12 is connected with a propeller hub body 9 through an oil cylinder bolt 24, an oil cylinder piston 11 is positioned in the servo oil cylinder body 12, a blade root flange 29 (only the part of the blade root flange is drawn in the drawing) is connected with a crank disc 5 in the propeller hub through a blade root bolt 8, a blade root pin 30 transmits blade torque, the front end of a piston rod guide frame 1 is arranged on an inner lining sleeve of the hole of the propeller shaft 28, the rear end is arranged in a hole at the rear end of the propeller hub body 9, the tail end is connected with the piston 11 through a group of screws 16, an inner hole of a sliding block 31 is matched with a crank pin of the crank disc 5, the sliding block 31 is arranged in a sliding groove of the piston rod guide frame 1, when high-pressure oil is input into a rear cavity (cavity B cavity) formed by the servo oil cylinder body 12 and, the piston 11 and the piston rod guide frame 1 move linearly along the axial line towards the fore end direction, a crank-slide block mechanism formed by the crank disk 5 and the slide block 31 drives the blade to rotate around the blade axial line of the blade to the direction of increasing the screw pitch, so as to finish the vehicle-correcting distance adjustment, and at the moment, a front cavity (A cavity) formed by the servo oil cylinder body 12 and the piston 11 returns oil; on the contrary, when the high-pressure oil is input into the front cavity (cavity A) through the annular cavity formed by the outer oil pipe and the inner oil pipe in the shaft double oil pipes 26 and the annular cavity formed by the hub outer oil pipe 23 and the hub inner oil pipe 21, the reversing distance adjustment is completed. Wherein the piston rod guide frame 1 adopts a forged piece structure, the piston rod guide frame structure adopted by the existing pitch-adjusting propeller hub is shown in figure 3, the utility model discloses example piston rod guide frame 1 structure is shown in figure 4, the retaining wall A, B of just backing up is connected by strengthening rib 1f (see figure 2, figure 4), for example be hollow structure between "little pentagon" 1e and the "big pentagon" of spout, retaining wall in figure 4 and figure 2, and design lightening hole 1a at the non-atress position, this kind of structure has both guaranteed due intensity and rigidity, has reduced weight again, this example piston rod guide frame 1 weight compares and can lighten 20%; in order to reduce eccentric force generated in the rotating process, the high-power and large-size pitch-adjusting propeller hub has static unbalance moment requirements on a large forging piece such as a piston rod guide frame, so that the design comprises an anti-rotation strip 1b and an anti-rotation strip connecting screw 1c, corresponding parts of 5 holes are optimally designed, the center of mass of the piston rod is ensured to be positioned on an axis, and the actual static unbalance moment of the piston rod is easily controlled to be about 65% of the maximum allowable value in consideration of processing factors. The maximum allowable static unbalance moment calculation formula is as follows:
wherein M isuMaximum allowable static unbalance moment: (N.m), wherein m is the mass (kg) of the piston rod, and r is the rated rotating speed (r/min) of the propeller hub.
The forging piece of the crank disc 5 is forged by adopting a blank film, the blank film forging die 5b is shown in figure 6, the blank film forging piece is adopted, the feeding weight of the crank disc in a blank is reduced by about 15% compared with that in free forging, more importantly, the mechanical property of the forging piece is superior to that in free forging, a fiber streamline between a free forging crank disc body and a crank pin can be cut off in machining, the cutting damage of the blank film forging piece to surface layer fiber tissues is far less than that in free forging, the forging piece is stressed by three-way pressure during forging, and the tissue density is superior to that of the free forging piece. In order to facilitate the preparation and machining of the crank disc forging, a die blind hole 5c with two corresponding crank pins 5a is designed and machined in the blank die 5b.
The length of the double oil pipes 26 in the shaft of the controllable pitch propeller device depends on the length of the shaft system and the position of an oil distributor of the controllable pitch propeller, and generally consists of a plurality of sections. When the controllable-pitch propeller hub is assembled with the propeller shaft 28, a longitudinal sectional view (figure 1) of the high-power controllable-pitch propeller hub and a partial enlarged view (figure 7) of the end part of an oil pipe are shown, and before the servo oil cylinder body 12 or the oil cylinder end cover 18 is installed, the double oil pipes 26 in the shaft are mutually connected and then are pushed into an inner hole of a shaft system through a shaft center hole of the piston rod guide frame 1; the connection method of the hub inner oil pipe 21 and the hub outer oil pipe 23 is as follows: the propeller hub inner oil pipe 21 and the propeller hub outer oil pipe 23 are plugged into a shaft center hole of the piston rod guide frame 1 together, and the propeller hub inner oil pipe 21 is screwed into a threaded hole of a joint of a shaft inner double oil pipe 26; the hub outer oil pipe 23 is directly inserted into an inner hole of the shaft inner double oil pipe 26 joint, and an anti-rotation screw 27 pre-installed on the hub outer oil pipe 23 is aligned with a notch groove on the shaft inner double oil pipe 26 joint during installation; screwing in the hexagonal nut 20, and placing the rectangular anti-loosening sheet 15 according to the hexagonal direction of the nut; placing a hub outer oil pipe press ring 19 (figure 8), wherein the rectangular anti-loosening sheet 15 is clamped in the press ring notch 19 a; the screw 35 is then screwed in. When the oil pipe in the shaft is disassembled, the propeller hub and the propeller shaft do not need to be disassembled, the oil cylinder end cover 18 is opened, and the screw 35 and the outer oil pipe pressing ring 19 are disassembled to be capable of disassembling the inner oil pipe, the outer oil pipe and the double oil pipes in the shaft through tools.
The utility model discloses propeller hub designs to install one-way throttle check valve 6 (see figure 9 in detail) on piston rod guide frame 1, mainly by valve body 6a, case 6b, spring 6C, packing ring 6D, retaining ring 6e constitutes, spiro 7 plays spacing locking effect, under the normal operating conditions, lubricated chamber oil circuit fluid does not flow, because of case 6b head area centre bore, the lubricated chamber of propeller hub (see C chamber in figure 1) is the same with the D chamber pressure in the shafting, when dismantling the paddle, the hydraulic pressure in C chamber has and spills over, if the C chamber, the direct intercommunication in D chamber, then a large amount of hydraulic pressure also can flow in the shafting. Because of the throttling non-return function of the one-way throttling check valve 6, the oil in the cavity D can not flow out in a large amount (the oil flowing out through the head part of the valve core 6b with a central hole can be ignored), and because the high-power and large-size propeller hub is usually matched with a large-diameter and long shaft system for use, the shaft system is inclined downwards to a certain extent along the stern part direction, and the structure can greatly reduce the outflow of the oil.
It is required to explain, the utility model discloses a high-power, jumbo size roll adjustment oar hub to improve the ability and the reliability that the high strength load was resisted to the propeller hub mechanism, satisfy present boats and ships field to the demand of high-power roll adjustment oar device, and then promote the power application scope of roll adjustment oar device. The main characteristics are as follows:
(1) in order to meet the requirement of high-power heavy-load distance adjustment, enough strength is ensured, rigidity is improved, meanwhile, in order to reduce weight, a forging piece structure (figure 4) with a special structure is adopted for the piston rod guide frame, the structural form can ensure enough strength, the rigidity is not lower than that of a piston rod (figure 3) with the existing structural form, but the weight can be reduced by 20%, 5 connecting reinforcing ribs are reserved between forward and reverse retaining walls (stress part accessories) after processing, and 5 lightening holes are processed at non-important positions. The piston rod has the other characteristic that the retaining wall parts corresponding to the 5 holes are not completely the same due to the existence of the anti-rotating strip, so that the corresponding parts of the 5 holes are optimally designed for reducing the eccentric force generated in the rotating process of the piston rod, and the barycenter of the piston rod is ensured to be positioned on the axis.
(2) The crank disc adopts the blank film forging piece, so that the weight of the fed blank of the crank disc is reduced by about 15 percent compared with that of the free forging, more importantly, the mechanical property of the crank disc is superior to that of the free forging, the fiber streamline between the free forging crank disc body and a crank pin can be cut off during machining, the cutting damage of the blank film forging piece to the surface fiber tissue is far less than that of the free forging, the forging piece bears three-way pressure stress during forging, and the tissue density is superior to that of the free forging piece.
(3) In order to improve the manufacturability of oil pipe disassembly and assembly, the structural form shown in the attached drawing 9 is adopted, and the oil pipe in the shaft can be disassembled and assembled from the rear end of the propeller hub oil cylinder without disassembling the connection between the propeller hub and the propeller shaft.
(4) When the blades are disassembled, hydraulic oil in a lubricating cavity of the propeller hub can overflow, and particularly for a large-size propeller shaft system which is obliquely installed, a one-way valve with a throttling hole is designed on a piston rod to greatly reduce the overflow of the hydraulic oil.
Claims (7)
1. The utility model provides a high-power, jumbo size controllable pitch oar propeller hub, has at least one piston rod guide bracket (1), a propeller hub body (9), a servo hydro-cylinder body (12) and piston (11), a plurality of crank disks (5) that correspond the paddle number, its characterized in that: one end of the propeller hub body (9) is fixedly connected with the propeller shaft (28), and the other end of the propeller hub body is fixedly connected with the servo oil cylinder body (12); the front end shaft of the piston rod guide frame (1) is arranged on an inner bushing of a propeller shaft (28) hole, the rear end shaft penetrates through a rear end hole of the propeller hub body (9) and then is fixedly connected with a piston (11) positioned in the servo oil cylinder body (12), an outer polygonal boss corresponding to the number of the propeller blades is arranged in the middle of the piston rod guide frame (1), and a sliding groove is formed in each side face of the outer polygonal boss; a sliding block (31) is arranged in the sliding groove, and an inner hole of the sliding block (31) is matched and connected with a crank pin of a crank disc (5) arranged on the side surface of the propeller hub body (9) to form a crank-sliding block mechanism; the crank disc (5) is connected with the blade through a blade root flange (29); an in-shaft double oil pipe (26) is sleeved in the piston rod guide frame (1), an in-hub oil pipe (21) of the in-shaft double oil pipe (26) is communicated with the servo oil cylinder body (12) and the piston (11), an out-hub oil pipe (23) of the in-shaft double oil pipe (26) is communicated with a front cavity formed by the servo oil cylinder body (12) and the piston (11), when high-pressure oil is input into a rear cavity through the in-hub oil pipe (21), the piston (11) and the piston rod guide frame (1) move linearly along the axial line towards the direction of the front end, a crank-slider mechanism formed by the crank disc (5) and the slider (31) drives the blades to rotate around the axial line of the blades to the direction of increasing the screw pitch, so that the forward vehicle pitch adjustment is completed, and on the contrary, when the high-pressure oil is input into the front cavity through the out-hub oil pipe (23), the reverse pitch adjustment is completed.
2. The high power, large size, pitch propeller hub of claim 1, wherein: the high-power large-size controllable pitch propeller hub is connected with a propeller shaft (28) of which the inner hole is provided with a double-oil-pipe (26) in the shaft through a shaft flange bolt (3) and a torsion pin (25).
3. The high power, large size, pitch propeller hub of claim 1, wherein: the piston rod guide frame (1) is processed into a hollow structure by adopting a forging piece, an inner polygonal boss is arranged inside the outer polygonal boss, and a weight-reducing hole is formed in a stress part between the outer polygonal boss and the inner polygonal boss.
4. The high power, large size, pitch propeller hub of claim 1, wherein: the front retaining wall and the back retaining wall on the two sides of the sliding groove are connected through reinforcing ribs; and the platform at the opposite side of the sliding groove is provided with an anti-rotating strip.
5. The high power, large size, pitch propeller hub of claim 1, wherein: the crank disc (5) is forged by a moulding bed forging die, and two die blind holes corresponding to the crank pins are formed in the moulding bed forging die (5 b).
6. The high power, large size, pitch propeller hub of claim 1, wherein: the hub inner oil pipe (21) and the hub outer oil pipe (23) of the shaft inner double oil pipe (26) are plugged into a shaft central hole of the piston rod guide frame (1) together, wherein the hub inner oil pipe (21) is screwed into a threaded hole of a joint of the shaft inner double oil pipe (26); the hub outer oil pipe (23) is directly inserted into an inner hole of the joint of the shaft inner double oil pipes (26), and the hub outer oil pipe (23) is aligned to the notch groove on the joint of the shaft inner double oil pipes (26) through a pre-installed anti-rotation screw (27); screwing in a hexagon nut (20), placing a rectangular anti-loosening sheet (15) and a hub outer oil pipe pressing ring (19) in the hexagon direction of the hexagon nut (20), wherein the rectangular anti-loosening sheet (15) is clamped in a pressing ring notch (19a) of the hub outer oil pipe pressing ring (19).
7. The high power, large size, pitch propeller hub of claim 1, wherein: the piston rod guide frame (1) is provided with a one-way throttling check valve (6), the one-way throttling check valve (6) is composed of a valve body (6a), a valve core (6b), a spring (6c), a gasket (6d) and a check ring (6e), the valve core (6b) is arranged in the valve body (6a), the spring (6c) is arranged between the valve core (6b) and the gasket (6d) and the check ring (6e) at the bottom of the valve body (6a), and the top of the valve body (6a) is provided with a spiral ring (7) with a limiting and stopping effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920312469.7U CN209870708U (en) | 2019-03-12 | 2019-03-12 | High-power large-size controllable pitch propeller hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920312469.7U CN209870708U (en) | 2019-03-12 | 2019-03-12 | High-power large-size controllable pitch propeller hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209870708U true CN209870708U (en) | 2019-12-31 |
Family
ID=68954720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920312469.7U Active CN209870708U (en) | 2019-03-12 | 2019-03-12 | High-power large-size controllable pitch propeller hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209870708U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109733578A (en) * | 2019-03-12 | 2019-05-10 | 中国船舶重工集团公司第七0四研究所 | High-power, large scale distance-adjustable oar hub |
| CN112278212A (en) * | 2020-10-29 | 2021-01-29 | 武汉船用机械有限责任公司 | Split type structure of steering oar rotation driving device |
-
2019
- 2019-03-12 CN CN201920312469.7U patent/CN209870708U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109733578A (en) * | 2019-03-12 | 2019-05-10 | 中国船舶重工集团公司第七0四研究所 | High-power, large scale distance-adjustable oar hub |
| CN109733578B (en) * | 2019-03-12 | 2024-03-22 | 中国船舶重工集团公司第七0四研究所 | High-power and large-size adjustable pitch propeller hub |
| CN112278212A (en) * | 2020-10-29 | 2021-01-29 | 武汉船用机械有限责任公司 | Split type structure of steering oar rotation driving device |
| CN112278212B (en) * | 2020-10-29 | 2022-01-28 | 武汉船用机械有限责任公司 | Split type structure of steering oar rotation driving device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109733578B (en) | High-power and large-size adjustable pitch propeller hub | |
| CN209870708U (en) | High-power large-size controllable pitch propeller hub | |
| RU2660202C2 (en) | Azimuth thruster | |
| CN211731774U (en) | Adjustable propeller hub for oil lubrication shafting | |
| SG195585A1 (en) | Propeller | |
| US3560108A (en) | Safety device for variable pitch propellers | |
| CN101602397A (en) | Novel ship propeller hub | |
| US6814636B2 (en) | Marine radial surface drive | |
| CN202130564U (en) | Front-mounted type cylinder ship propeller hub | |
| CN209830158U (en) | Numerical control electric screw press | |
| DE1271583C2 (en) | SCREW PROPELLERS FOR SHIPS | |
| CN202226040U (en) | Marine integral-structure propeller hub | |
| CN101602399B (en) | Propeller hub | |
| RU2383465C1 (en) | Variable-pitch propeller hub with automatic propeller feathering mechanism | |
| CN210283303U (en) | Fixed blade type propeller and film coating die | |
| US3273656A (en) | Hydraulically actuated controllable-pitch propeller system | |
| CN209956193U (en) | Push-pull rod type adjustable propeller hub | |
| CN210455160U (en) | Ship adjustable pitch propeller and pitch adjusting mechanism thereof | |
| CN213677099U (en) | Double-oil-pipe oil cylinder rear-mounted adjustable propeller hub | |
| CN212290276U (en) | Integral adjustable oar propeller hub of hydro-cylinder of taking check valve | |
| EP2551186B1 (en) | Propeller mechanism for a marine vehicle | |
| US20150329213A1 (en) | Integral ram air turbine strut and gearbox | |
| JPH0310991A (en) | Gear device for marine pusher | |
| CN102795324A (en) | Feathering propeller hub structure applied to ship propulsion | |
| CN113859495A (en) | Controllable pitch propeller hub suitable for high navigational speed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |