CN108945364B - Large ship propeller based on split type guide frame structure - Google Patents
Large ship propeller based on split type guide frame structure Download PDFInfo
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- CN108945364B CN108945364B CN201810545756.2A CN201810545756A CN108945364B CN 108945364 B CN108945364 B CN 108945364B CN 201810545756 A CN201810545756 A CN 201810545756A CN 108945364 B CN108945364 B CN 108945364B
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- guide frame
- piston
- shaft
- block
- hub
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H3/00—Propeller-blade pitch changing
- B63H3/06—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical
- B63H3/08—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid
- B63H3/081—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid actuated by control element coaxial with the propeller shaft
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- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a large ship propeller based on a split type guide frame structure, which comprises a propeller hub, an oil cylinder at the front end of the propeller hub and a stern shaft at the rear end of the propeller hub, wherein an inner oil pipe and an outer oil pipe are arranged in the stern shaft; the guide frame assembly is of a split structure and comprises a guide frame shaft, a guide frame sleeve, a guide frame block and a guide frame ring, wherein the guide frame sleeve is sleeved outside the left end of the guide frame shaft, the guide frame block is movably connected with the sliding block, and the guide frame ring is fixedly connected with the guide frame sleeve and the guide frame block respectively. The processing is convenient, and the cost is saved; the guide frame and the piston are connected without bolts, the piston nut is used for pre-tightening the piston and the guide frame, meanwhile, guide frame sleeve parts are added, the deformation of the piston nut after pre-tightening is increased, and the pre-tightening of the piston nut is safer and more reliable.
Description
Technical Field
The invention belongs to the field of marine equipment, and particularly relates to a large ship propeller based on a split type guide frame structure.
Background
The propeller hub component is a key part in a propeller ship propulsion system, the guide frame component is the most key stressed component in the propeller hub component, once a problem occurs, the distance adjusting function of the adjustable propeller cannot be realized, and huge loss is caused to the wheel ship. In the mechanism, a common guide frame adopts an integral single part, the machining is complex, meanwhile, connecting bolts between the piston and the guide frame bear great force during working, the connecting bolts have high strength requirements, once one bolt has a problem, due to unbalanced stress, breakage phenomena can occur on other bolts, and risks are brought to the safety of the structure. When the size of the hub is large, the frame is enlarged, and the single integral guide frame is inconvenient to forge, process and manufacture; meanwhile, when the size of the propeller hub is large, connecting bolts of the guide frame and the piston are difficult to select, the bolts need to be automatically produced in a non-standard mode, the cost is increased, and the safety of the bolts cannot be guaranteed.
Disclosure of Invention
The invention aims to overcome the defects and provides the large ship propeller based on the split guide frame structure, so that the forging and the processing are convenient, and the cost is saved; the guide frame and the piston are connected without bolts, the piston nut is used for pre-tightening the piston and the guide frame, meanwhile, guide frame sleeve parts are added, the deformation of the piston nut after pre-tightening is increased, and the pre-tightening of the piston nut is safer and more reliable.
In order to achieve the purpose, the invention provides a large ship propeller based on a split type guide frame structure, which comprises a propeller hub, an oil cylinder at the front end of the propeller hub and a stern shaft at the rear end of the propeller hub, wherein an inner oil pipe and an outer oil pipe are arranged in the stern shaft; the guide frame assembly is of a split structure and comprises a guide frame shaft, a guide frame sleeve, a guide frame block and a guide frame ring, wherein the guide frame sleeve is sleeved outside the left end of the guide frame shaft, the guide frame block is movably connected with the sliding block, and the guide frame ring is fixedly connected with the guide frame sleeve and the guide frame block respectively.
A piston is arranged in the oil cylinder, and a cavity between the front end of the piston and the inner wall of the oil cylinder body is a rear cavity; the cavity between the rear end of the piston and the propeller hub is a front cavity, and the piston is arranged at the front end of the guide frame shaft through a piston nut. The piston nut is fixed with the piston through a nut stop pin, and the nut is prevented from rotating. And an oil hole is formed in the piston.
The inner oil pipe in the screw shaft is communicated with the rear cavity; the outer oil pipe is communicated with the front cavity through the guide frame shaft and the oil hole of the piston, and the right end of the guide frame shaft is inserted into the left end of the stern shaft.
The outer diameter of the left end of the guide frame shaft is smaller than that of the right end of the guide frame shaft.
The guide frame block is a square block, the root part of the guide frame block is provided with an offset pin, the offset pin is inserted into the sliding block to realize movable connection, and the blade packing is fixedly connected with the blade through a blade root screw.
The propeller hub is connected with the oil cylinder through a bolt, and the propeller hub is connected with the stern shaft through a flange screw.
When the hydraulic oil circulation return device is used, when hydraulic oil enters the front cavity through the outer oil pipe, the guide frame block moves leftwards, and hydraulic oil in the rear cavity circularly returns through the inner oil pipe; when hydraulic oil enters the rear cavity through the inner oil pipe, the guide frame block is pushed to move rightwards, and the hydraulic oil in the front cavity returns circularly through the outer oil pipe. When the guide frame block moves linearly, the root part of the guide frame block is provided with an offset pin, the pin is inserted into the sliding block to realize movable connection, and the sliding groove of the blade packing, the pin on the guide frame block and the sliding block form a tangent mechanism to drive the blade packing to rotate. Because the paddle and the blade packing are fixedly connected through the blade root screw, the rotation of the blade packing changes the angle of the paddle and realizes the rotary distance adjustment of the paddle.
Compared with the prior art, the invention has the beneficial effects that:
(1) the guide frame adopts a split structure, and the guide frame component consists of the guide frame shaft, the guide frame sleeve, the guide frame block and the guide frame ring, so that the forging and the processing are convenient, and the cost is saved.
(2) According to the invention, the guide frame assembly and the piston are pre-tightened by the piston nut instead of being connected by the bolt, so that the problems of difficulty in bolt selection and unsafety of non-standard bolts are avoided.
(3) And the guide frame sleeve part is added, so that the deformation of the piston nut after pre-tightening is greatly increased, the nut pre-tightening is safer and more reliable, and the safety and reliability of the rear cavity and the front cavity of the piston are ensured.
Drawings
Fig. 1 is a schematic structural diagram of a large ship propeller based on a split type guide frame structure according to the present invention.
In the figure: 1-propeller hub, 2-oil cylinder, 3-stern shaft, 4-inner oil pipe, 5-outer oil pipe, 6-blade packing, 7-blade, 8-slide block, 9-guide frame shaft, 10-guide frame sleeve, 11-guide frame block, 12-guide frame ring, 13-piston, 14-rear chamber, 15-front chamber, 16-piston nut, 17-nut stop pin, 18-offset pin and 19-blade root screw.
Detailed Description
Preferred embodiments of the present invention will be described in more detail with reference to specific examples.
Example 1
According to the large ship propeller based on the split type guide frame structure shown in the figure 1, the large ship propeller comprises a propeller hub 1, an oil cylinder 2 connected with the front end of the propeller hub 1 through a bolt, and a stern shaft 3 connected with the rear end of the propeller hub 1 through a flange screw, wherein an inner oil pipe 4 and an outer oil pipe 5 are arranged in the stern shaft 3, a blade packing 6 is arranged on the propeller hub 1, the blade packing 6 is connected with a blade 7 and a sliding block 8, a guide frame assembly is arranged in the propeller hub 1, the front end of the guide frame assembly is inserted into the oil cylinder 2, and the rear end of the guide frame assembly is inserted into the stern; the guide frame assembly is of a split structure and comprises a guide frame shaft 9, a guide frame sleeve 10, a guide frame block 11 and a guide frame ring 12, the guide frame sleeve 10 is sleeved outside the left end of the guide frame shaft 9, the guide frame block 11 is movably connected with the sliding block 8, and the guide frame ring 12 is fixedly connected with the guide frame sleeve 10 and the guide frame block 11 respectively. The outer diameter of the left end of the guide frame shaft 9 is smaller than that of the right end of the guide frame shaft 9.
In the embodiment, a piston 13 is arranged in the oil cylinder 2, an oil hole is formed in the piston 13, and a cavity between the front end of the piston 13 and the inner wall of the oil cylinder is a rear cavity 14; the chamber between the rear end of the piston 13 and the hub 1 is a front chamber 15, and the piston 13 is mounted on the front end of the carrier shaft 9 by a piston nut 16. The piston nut 16 is secured to the piston 13 by a nut retaining pin 17.
In this embodiment, the inner oil pipe 4 in the stern shaft 3 is communicated with the rear chamber 14; the outer oil pipe 5 is communicated with the front cavity 15 through oil holes of the guide frame shaft 9 and the piston 13, and the right end of the guide frame shaft 9 is inserted into the left end part of the stern shaft 3.
In this embodiment, the guide frame block 11 is a square block, the root of the guide frame block 11 is provided with an offset pin 18, the offset pin 18 is inserted into the slider 8 to realize movable connection, and the blade packing 6 is fixedly connected with the blade 7 through a blade root screw 19.
Claims (6)
1. A large ship propeller based on a split type guide frame structure comprises a propeller hub (1), an oil cylinder (2) at the front end of the propeller hub (1) and a stern shaft (3) at the rear end of the propeller hub (1), wherein an inner oil pipe (4) and an outer oil pipe (5) are arranged in the stern shaft (3), a blade packing (6) is arranged on the propeller hub (1), and the blade packing (6) is connected with a blade (7) and a sliding block (8), and is characterized in that a guide frame assembly is arranged in the propeller hub (1), the front end of the guide frame assembly is inserted into the oil cylinder (2), and the rear end of the guide frame assembly is inserted into the stern shaft (3); the guide frame assembly is of a split structure and comprises a guide frame shaft (9), a guide frame sleeve (10), a guide frame block (11) and a guide frame ring (12), the guide frame sleeve (10) is sleeved outside the left end of the guide frame shaft (9), the guide frame block (11) is movably connected with the sliding block (8), the guide frame ring (12) is fixedly connected with the guide frame sleeve (10) and the guide frame block (11) respectively, the guide frame block (11) is a square block, an offset pin (18) is arranged at the root of the guide frame block (11), and the offset pin (18) is inserted into the sliding block (8) to realize movable connection;
a piston (13) is arranged in the oil cylinder (2), and a cavity between the front end of the piston (13) and the inner wall of the oil cylinder body is a rear cavity (14); a cavity between the rear end of the piston (13) and the hub (1) is a front cavity (15), and the piston (13) is arranged at the front end of the guide frame shaft (9) through a piston nut (16);
the piston nut (16) is fixed with the piston (13) through a nut stop pin (17).
2. Large boat thruster based on split guide frame structure according to claim 1, characterized in that the piston (13) is provided with oil holes therein.
3. The split type guide frame structure-based large ship propeller according to claim 2, wherein the inner oil pipe (4) in the stern shaft (3) is communicated with the rear chamber (14); the outer oil pipe (5) is communicated with the front cavity (15) through oil holes of the guide frame shaft (9) and the piston (13), and the right end of the guide frame shaft (9) is inserted into the left end part of the stern shaft (3).
4. The split type guide frame structure-based large ship propeller according to claim 1, wherein the outer diameter of the left end of the guide frame shaft (9) is smaller than the outer diameter of the right end of the guide frame shaft (9).
5. The split guide frame structure-based large ship propeller according to claim 1, wherein the blade packing (6) is fixedly connected to the blade (7) by a blade root screw (19).
6. The split type guide frame structure-based large ship propeller according to claim 1, wherein the hub (1) is connected with the oil cylinder (2) through bolts, and the hub (1) is connected with the stern shaft (3) through flange screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810545756.2A CN108945364B (en) | 2018-05-25 | 2018-05-25 | Large ship propeller based on split type guide frame structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810545756.2A CN108945364B (en) | 2018-05-25 | 2018-05-25 | Large ship propeller based on split type guide frame structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108945364A CN108945364A (en) | 2018-12-07 |
| CN108945364B true CN108945364B (en) | 2021-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810545756.2A Active CN108945364B (en) | 2018-05-25 | 2018-05-25 | Large ship propeller based on split type guide frame structure |
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| CN (1) | CN108945364B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB828942A (en) * | 1957-04-18 | 1960-02-24 | Ernest Charles Hatcher | Improvements relating to propellers or the like having variable-pitch blades |
| DK111869B (en) * | 1961-10-26 | 1968-10-14 | N Liaaen | Servo mechanism for turning the blades in a ship propeller. |
| US4781533A (en) * | 1986-09-30 | 1988-11-01 | Kamewa Ab | Control system for propeller with controllable pitch |
| FI890014A (en) * | 1988-03-02 | 1989-09-03 | Neptun Schiffswerft Veb | REGLERPROPELLER. |
| CN201472659U (en) * | 2009-09-21 | 2010-05-19 | 武汉船用机械有限责任公司 | Controllable pitch propeller with wind deflector |
| CN201494619U (en) * | 2009-09-24 | 2010-06-02 | 杭州前进马森船舶传动有限公司 | Oil cylinder rear-mounted type controllable screw pitch propeller |
| CN201842240U (en) * | 2010-07-23 | 2011-05-25 | 南京高精船用设备有限公司 | Large-size controllable-pitch propeller hub |
| CN203558197U (en) * | 2013-08-14 | 2014-04-23 | 南京高精船用设备有限公司 | Pitch-adjustable full-revolving propeller used for ship |
| CN206476074U (en) * | 2017-02-28 | 2017-09-08 | 合肥倍豪海洋装备技术有限公司 | A kind of propeller hub structure for adjustable-pitch screw propulsion device |
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2018
- 2018-05-25 CN CN201810545756.2A patent/CN108945364B/en active Active
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| Publication number | Publication date |
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| CN108945364A (en) | 2018-12-07 |
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