CN114294339A - Marine floating structure air spring coupling - Google Patents
Marine floating structure air spring coupling Download PDFInfo
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- CN114294339A CN114294339A CN202111392768.4A CN202111392768A CN114294339A CN 114294339 A CN114294339 A CN 114294339A CN 202111392768 A CN202111392768 A CN 202111392768A CN 114294339 A CN114294339 A CN 114294339A
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Abstract
The invention provides an air spring coupling with a floating structure for a ship, which comprises a driving drum, a driven disc, a driving seat, a driven seat, an air spring, a driving end flange and a driven end flange. The driving seat is fixed on the driving drum, the driven seat is fixed on the driven disc, and a driving end flange and a driven end flange are respectively installed on two sides of the air spring. The air springs are uniformly distributed between the driving seat and the driven seat along the circumferential direction, the front vehicle air springs for transmitting the front vehicle torque are communicated with each other, and the back vehicle air springs for transmitting the back vehicle torque are communicated with each other. The air spring driving end flange is fixedly connected with the driving seat through a bolt, and after the air spring is inflated, the air spring extends to enable the air spring driven end flange to be pressed on the driven seat. The floating structure air spring coupling has good shafting buffering and vibration absorbing performance; different rigidity characteristics can be realized according to the requirements of the ship power device by adjusting the internal pressure of the air spring.
Description
Technical Field
The invention relates to the technical field of couplings, in particular to an air spring coupling with a floating structure for a ship.
Background
The coupling is widely used in rotary machines, and includes a rigid coupling, an elastic coupling, and the like. The marine elastic coupling is generally arranged at the output end of the main machine and has the function of transmitting torque; adjusting the torsional vibration characteristic of a shafting of the transmission device; compensating the central displacement of the driving shaft and the driven shaft caused by vibration and impact; buffering and vibration absorption, and the purpose of protecting the running reliability of the driving machine, the driven machine and the whole transmission device is achieved. Because the structure of the existing elastic coupling is not reasonable, the axial displacement and the radial displacement which can be compensated can not meet the requirement sometimes; or the axial rigidity and the radial rigidity of the coupling are overlarge, and the connected power device is easy to generate fatigue failure under the repeated action of larger axial displacement and radial displacement, so that the service performance and the service life of the power device are directly influenced. Therefore, it is necessary to develop a coupling having a large amount of radial displacement compensation, a small stiffness performance, and a compact structure.
In the prior art, the couplings for ships generally adopt the structural types of rubber block couplings, diaphragm couplings and the like, such as the RATO rubber block couplings of the company VULKAN, germany, and the diaphragm couplings of the company CENTA, germany. The Ailergen transmission engineering Limited liability company of Austria (invention patent: CN103075435A) develops a radial elastic coupling which mainly comprises a plurality of radial struts and angle rods, can offset the possible radial eccentricity of the rotating shafts of the mechanical parts connected with each other, but has limited angular displacement compensation capability; german Siemens company (patent of invention: CN102537097A) designs a transmission device which simultaneously comprises a rubber coupling and a gear coupling, has better radial and axial displacement compensation capability and can transmit larger torque. Meanwhile, the structure of the coupler is complex, the installation and the disassembly are unchanged, the size and the weight of the coupler structure are large, the coupler is limited by the space of a cabin of a ship, and the coupler has defects in the aspects of maintainability, rigidity performance and the like.
Disclosure of Invention
The invention aims to provide an air spring coupling with a floating structure for a ship, which adopts an air spring filled with compressed air inside to realize good buffering, vibration absorption and large torque transfer performance of a shafting and has lower rigidity and better maintainability.
The air spring coupling is characterized by comprising a driving drum, a driven disc, a driving seat, a driven seat, a front air spring and a back air spring;
the driving drum is connected with the driving shaft, the driven disc is coaxial and adjacent to the driving drum, and the driven disc is connected with the driven shaft;
the number of the driving seats is the same as that of the driven seats, and the driving seats and the driven seats are arranged at intervals; the driving seat is arranged on the outer side of the side wall of the driving drum, and the driven seat is arranged on one side, adjacent to the driving drum, of the driven disc;
the air springs are arranged between the driving seat and the driven seat along the circumferential direction, one end of each air spring is connected with the driving seat, and the other end of each air spring is connected with the driven seat; the positive air spring is used for transmitting positive vehicle torque between the active seat and the driven seat, and the reverse air spring is used for transmitting reverse torque between the active seat and the driven seat.
Furthermore, the axial thickness of the driven seat is smaller than the diameter of the air spring, so that the side wall of the air spring is higher than the driven seat;
the outer edge of the driving drum is further provided with an annular limiting plate, the limiting plate is arranged on the outer side of the side wall of the air spring, and a gap is formed between the limiting plate and the side wall of the air spring.
Furthermore, the air spring coupling comprises a driving end flange and a driven end flange; the driving end flange and the driven end flange are respectively arranged at two ends of the air spring, the driving end flange is fixedly connected with the driving seat, and the driven end flange is in floating connection with the driven seat.
Furthermore, the front air springs are communicated with each other, and the back air springs are communicated with each other.
Furthermore, the driven end flange is provided with a circular boss, a round hole is formed in the connecting position of the driven seat and the driven end flange, the round hole is matched with the circular boss, the diameter of the round hole is larger than that of the circular boss, the circular boss and the round hole are concentric, and the boss is inserted into the round hole.
Furthermore, the driving seat and the driven seat are both hollow structures for reducing the total amount of the air spring coupling.
Furthermore, the air spring can adjust the internal pressure of the air spring according to the requirement of a ship power device.
The invention has the advantages that:
the air spring coupling of the floating structure for the ship adopts six pairs or eight pairs of air springs to form the air spring coupling, so that the device has a compact structure and light weight, and has good shafting buffering and vibration absorbing performance; different rigidity characteristics can be realized according to the requirements of the ship power device by adjusting the internal pressure of the air spring.
The air spring coupler with the floating structure for the ship adopts the limiting plate to be matched with the side wall of the air spring in the axial direction, when axial displacement occurs, the air spring is firstly contacted with the limiting plate, and the phenomenon that a driving drum is directly contacted with a driven disc is avoided, and the coupler in the prior art cannot bear axial force to cause structural damage; after the axial force is eliminated, the distance between the driving drum and the driven disc can be reset through the elasticity of the air spring; meanwhile, when the axial force is small, the axial force can be overcome through the elasticity of the air spring, and the stability of the coupler is improved.
The air spring coupling with the floating structure for the ship is in sliding connection, the traditional fixed connection is replaced, the driven end flange and the driven end can slide relatively, the axial displacement compensation capacity of the air spring coupling is greatly improved, and the axial rigidity is greatly reduced; meanwhile, the radial displacement compensation capacity of the air spring coupling can be increased, and the radial rigidity is reduced.
The floating structure air spring coupling for the ship is in floating connection, after pressure air of the forward and reverse air spring is discharged, the air spring can be taken out for maintenance and replacement only by disassembling the fixing bolt between the driving end flange and the driving seat, the structure is simple and reasonable, and the maintainability of the air spring coupling is improved.
Drawings
FIG. 1 is a schematic structural diagram of a floating structure air spring coupling for a ship according to an embodiment of the present invention;
FIG. 2 is a side view (in section through the driven seat) of a floating structure air spring coupling for a watercraft according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of an air spring in a floating structure air spring coupling for a ship according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of an air spring and a spherical roller in a floating structure air spring coupling for a ship according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram (cross section passing through the driven seat) of a limit plate in a floating structure air spring coupling for a ship according to an embodiment of the present invention.
The device comprises a driving seat 1, a driving seat 2, a reversing air spring 3, a reversing air spring 4, a driven seat 5, a driving end flange 6, a driven end flange 6, a spherical roller 8, a driving drum 9, a driven disc 10 and a limiting plate 11.
Detailed Description
The technical solution of the present invention will be described in more detail with reference to the accompanying drawings, and the present invention includes, but is not limited to, the following embodiments.
As shown in the attached figure 1, the invention provides an air spring coupling with a floating structure for a ship, which comprises a driving drum 9, a driven disc 10, a driving seat 1, a driven seat 4, a front vehicle air spring 2, a back vehicle air spring 3, a driving end flange 5 and a driven end flange 6.
The driving drum 9 is of a bell-drum-shaped structure, the driven disc 10 is a circular plate, the diameter of the driven disc 10 is larger than the outer diameter of the driving drum 9, and the driven disc 10 and the driving drum 9 are coaxial and are arranged adjacently; the side of the driving drum 9, which is far away from the driven disc 10, is connected with a driving shaft; the driven disk 10 is connected to the driven shaft on the side facing away from the drive drum 9.
The plurality of driving seats 1 are uniformly distributed on the outer side of the side wall of the driving drum 9; the driven seats 4 with the same number as the driving seats 1 are uniformly arranged on the outer edge of the front surface of the driven disc 10, the driven seats 4 are arranged at intervals with the driving seats 1, and gaps are reserved between the driven seats 4 and the side wall of the driving drum 9, so that the driven seats 4 are driven by the driving seats 1 to drive the driven disc 10 to rotate when the driving drum 9 rotates.
In one embodiment, the air spring coupling comprises 6 driving seats 1 and 6 driven seats 4, the driving seats 1 and the driven seats 4 are of inverted trapezoidal structures, and the short sides of the driving seats are close to the driving drum 9; the driving seat 1 and the driven seat 4 have the same length of long sides and the angle of bevel edges at two sides, and the distance between the long sides of the driving seat 1 and the driven seat 4 and the outer side of the side wall of the driving drum 9 is the same; the height of the driven seat 4 is shorter than that of the driving seat 1, a gap is reserved between the driven seat and the outer side of the side wall of the driving drum 9, and the driven seat 4 is fixed on a driven disc 10 through bolts; the driving seat 1 is connected with the outer wall of the driving drum 9, the joint of the driving seat and the driving drum 9 is provided with an installation wing part, and the installation wing part is fixed on the side wall of the driving drum 9 through bolts. The angles of the adjacent bevel edges on the driving seat 1 and the driven seat 4 are mutually parallel, and the surfaces of the bevel edges on the two sides are provided with round holes; the driving seat 1 and the driven seat 4 both adopt a hollow structure, and the surfaces of the driving seat 1 and the driven seat 4 facing one side of the driving shaft are both open.
The front air spring 2 and the back air spring 3 are arranged between the driving seat 1 and the driven seat 4 along the circumferential direction, the air spring for transmitting the front torque is the front air spring 2, and the air spring for transmitting the back torque is the back air spring 3. And a driving end flange 5 and a driven end flange 6 are respectively arranged at two ends of each air spring, wherein the driving end flange 5 is connected with the driving seat 1, and the driven end flange 6 is connected with the driven seat 4. The front air springs 2 for transmitting the front torque are communicated with each other, and the back air springs 3 for transmitting the back torque are communicated with each other. Meanwhile, the air spring can adjust the internal pressure of the air spring according to the requirement of a ship power device so as to realize different rigidity characteristics of the air spring coupling.
In one embodiment, the air spring adopts a cylindrical bag type rubber air bag, and the center of the cylindrical air spring is concentrically arranged with round holes on the side surfaces of the driving seat 1 and the driven seat 4. One side of the driving end flange 5, which is connected with the air spring, is provided with a groove matched with the end head of the air spring, and the other side is a plane; the driving end flange 5 is fixedly connected with the driving seat 1 through bolts. One side of the driven end flange 6, which is connected with the air spring, is provided with a groove matched with the end head of the air spring, and the other side is provided with a circular boss which is smaller than the circular hole in diameter and is concentric with the circular hole. After the air spring is inflated, the air spring is stretched so that the driven end flange 6 of the air spring is pressed against the driven seat 4.
In the shafting vehicle-driving operation process, the air spring for transmitting the vehicle-driving torque is compressed and shortened, the air spring for transmitting the vehicle-driving torque is extended, and the air in the vehicle-driving air spring 2 and the air in the vehicle-driving air spring 3 have pressure, so that the driven end flange 6 and the driven seat 4 can not be separated all the time.
When the driving part and the driven part of the shafting are axially deviated, the driving end flange 5 and the driving seat 1 axially move along with the driving part, the driven seat 4 axially moves along with the driven part, the driven end flange 6 and the driven seat 4 axially slide relatively, and the relative axial displacement between the driving part and the driven part is compensated, so that the air spring does not need to compensate the axial displacement, and axial counter force can hardly be brought to the shafting.
Similarly, when the driving part and the driven part of the shafting are radially offset, the driving end flange 5 and the driving seat 1 radially move along with the driving part, the driven seat 4 radially moves along with the driven part, the air spring compensates the relative radial displacement between the driving part and the driven part, and meanwhile, due to the fact that the friction force between the driven end flange 6 and the driven seat 4 is small, relative radial displacement between the driving part and the driven part is compensated, the overall rigidity of the air spring coupling is reduced, and the radial counter force brought to the shafting is reduced.
In another embodiment, the contact surface of the driven end flange 6 and the driven seat 4 in the air spring coupling is also provided with an annular groove concentric with the boss, and a spherical roller 8 is arranged between the groove and the driven seat 4, so that the rigidity and the counter force are further reduced through a rolling friction pair.
In another embodiment, the air spring coupling of the present invention may also be configured such that the driven end flange 6 of the air spring is fixedly connected to the driven seat 4 through a bolt, and after the air spring is inflated, the air spring extends to press the driving end flange 5 of the air spring on the driving seat 1.
As shown in fig. 5, in another embodiment, the axial thickness of the driven seat 4 in the air spring coupling of the present invention is smaller than the diameter of the air spring, so that the side wall of the installed air spring is higher than the driven seat 4; the driving drum 9 is provided with an annular limiting plate 11, the limiting plate 11 and the driving drum 9 are arranged concentrically, the limiting plate 11 is arranged on the outer side of the air spring, and a gap is formed between the limiting plate 11 and the side wall of the air spring. When the driving drum 9 and the driven disc 10 are axially deviated, the limit plate 11 and the side wall of the air spring play a role in limiting, and the driving drum 9, the driving seat 1 installed on the driving drum 9, the driven disc 10 and the driven seat 4 installed on the driven disc 10 are prevented from being directly contacted, so that structural damage is avoided. If no limiting plate is arranged, the buffer devices between the driving end and the driven end of the coupler are connected in the circumferential direction and cannot bear axial force, and when the axial force is generated, the structure of the driving end and the structure of the driven end are easily damaged.
When the air spring coupling with the floating structure for the ship is maintained, after the pressure air of the forward and reverse air spring 3 is discharged, the air spring can be taken out for maintenance and replacement only by disassembling the fixing bolt between the driving end flange 5 and the driving seat 1.
The present invention is not limited to the above embodiments, and those skilled in the art can implement the present invention in other various embodiments according to the disclosure of the embodiments and the drawings, and therefore, all designs that can be easily changed or modified by using the design structure and thought of the present invention fall within the protection scope of the present invention.
Claims (7)
1. The marine floating structure air spring coupling is characterized by comprising a driving drum (9), a driven disc (10), a driving seat (1), a driven seat (4), a forward air spring (2) and a reverse air spring (3);
the driving drum (9) is connected with a driving shaft, the driven disc (10) and the driving drum (9) are coaxial and are arranged adjacently, and the driven disc (10) is connected with a driven shaft;
the number of the active seats (1) is the same as that of the driven seats (4), and the active seats (1) and the driven seats (4) are arranged at intervals; the driving seat (1) is arranged on the outer side of the side wall of the driving drum (9), and the driven seat (4) is arranged on one side, adjacent to the driving drum (9), of the driven disc (10);
the front air spring (2) and the back air spring (3) are air springs with the same structure, the air springs are arranged between the active seat (1) and the driven seat (4) along the circumferential direction, one end of each air spring is connected with the active seat (1), and the other end of each air spring is connected with the driven seat (4); the positive air spring (2) is used for transmitting positive vehicle torque between the driving seat (1) and the driven seat (4), and the reverse air spring (3) is used for transmitting reverse torque between the driving seat (1) and the driven seat (4).
2. Air spring coupling according to claim 1, characterized in that the axial thickness of the driven seat (4) is smaller than the diameter of the air spring, making the air spring sidewall higher than the driven seat (4);
annular limiting plates (11) are further mounted on the outer edges of the driving drums (9), the limiting plates (11) are arranged on the outer sides of the side walls of the air springs, and gaps are formed between the limiting plates (11) and the side walls of the air springs.
3. Air spring coupling according to claim 1, characterized in that it comprises a driving end flange (5) and a driven end flange (6); the driving end flange (5) and the driven end flange (6) are arranged at two ends of the air spring respectively, the driving end flange (5) is fixedly connected with the driving seat (1), and the driven end flange (6) is connected with the driven seat (4) in a floating mode.
4. Air spring coupling according to claim 1, characterized in that the air springs (2) for the front vehicle are in communication with each other and the air springs (3) for the reverse vehicle are in communication with each other.
5. Air spring coupling according to claim 3, characterized in that the driven end flange (6) is provided with a circular boss, the connecting position of the driven seat (4) and the driven end flange (6) is provided with a circular hole, the circular hole is matched with the circular boss, the diameter of the circular hole is larger than that of the circular boss, the circular boss and the circular hole are concentric, and the boss is inserted into the circular hole.
6. Air spring coupling according to claim 1, characterized in that the active seat (1) and the passive seat (4) are both hollow for reducing the total amount of the air spring coupling.
7. The air spring coupling of claim 1 wherein said air spring is capable of regulating the pressure within said air spring as required by the power plant of the ship.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111392768.4A CN114294339B (en) | 2021-11-23 | 2021-11-23 | Marine floating structure air spring coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111392768.4A CN114294339B (en) | 2021-11-23 | 2021-11-23 | Marine floating structure air spring coupling |
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| Publication Number | Publication Date |
|---|---|
| CN114294339A true CN114294339A (en) | 2022-04-08 |
| CN114294339B CN114294339B (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111392768.4A Active CN114294339B (en) | 2021-11-23 | 2021-11-23 | Marine floating structure air spring coupling |
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| CN112424003A (en) * | 2018-06-28 | 2021-02-26 | Thk株式会社 | Suspension frame |
| CN213511771U (en) * | 2020-11-10 | 2021-06-22 | 青岛龙兴伟业机电设备有限公司 | Connecting structure of output shaft of pneumatic tool |
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2021
- 2021-11-23 CN CN202111392768.4A patent/CN114294339B/en active Active
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| CH630708A5 (en) * | 1978-06-27 | 1982-06-30 | Engineering Dev Leeds Ltd | Flexible coupling |
| EP0939238A2 (en) * | 1998-02-26 | 1999-09-01 | Stromag Aktiengesellschaft | Flexible shaft coupling |
| AU2005321875A1 (en) * | 2004-12-31 | 2006-07-06 | Dana Automotive Systems Group, Llc | Center bearing assembly having adjustable pneumatic support member |
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|---|---|
| CN114294339B (en) | 2023-08-18 |
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