CN211852541U - Self-supporting elastic high-speed transmission shafting device - Google Patents

Abstract

The utility model provides a self-supporting elastic high-speed transmission shafting device, including first transition dish, carbon fiber two membrane dish shaft couplings, carbon fiber transmission shaft, second transition dish and self-supporting high elasticity shaft coupling, wherein: the self-supporting high-elasticity coupling is connected with a prime motor; the first transition disc is connected with a working machine; the carbon fiber transmission shaft and the carbon fiber double-membrane-disc coupler form a whole; one end of the carbon fiber double-film disc coupler is connected with the first transition disc, the other end of the carbon fiber double-film disc coupler is connected with the second transition disc, and the second transition disc is connected with the self-supporting high-elasticity coupler. The utility model can reduce the weight of the shafting and the installation space by eliminating the middle bearing seat through the high-elasticity shaft coupling with the self-supporting function; the shaft system weight is further reduced and the working rotating speed of the shaft system is improved through the carbon fiber composite transmission shaft; by adopting the carbon fiber double-diaphragm coupling, the radial compensation capacity of the shafting is further improved, and the axial compensation capacity of the shafting is compensated.

Description

Self-supporting elastic high-speed transmission shafting device

technical field

The utility model relates to the field of ship main propulsion shafting, in particular to a self-supporting elastic high-speed transmission shafting device.

Background technique

The main propulsion shaft system mainly transmits the propulsion power for the ship, so that the ship can run continuously on the water. At present, the main propulsion shafting driven by the marine diesel engine is mainly divided into steel shafting and composite material shafting according to the shafting material. Among them, the steel shafting is divided into two arrangements according to whether the speed of the diesel engine is decelerated. in particular:

The first arrangement of steel shafting is that the diesel engine transmits power to the reduction gearbox through a highly elastic coupling, and the output end of the gearbox drives the propeller or the jet pump through the main propulsion shafting device. Need to add intermediate support. The main propulsion shafting in this arrangement transmits a large amount of power, but the disadvantage is that the working speed is low, the shafting compensation capability is general, and the weight of the whole system is very heavy.

The second arrangement of steel shafting is that the diesel engine is directly connected to the main propulsion shafting device through a highly elastic coupling. The main propulsion shafting needs to have an intermediate support device, and finally drives the propeller or jet pump. The main propulsion shafting of this arrangement is characterized by simple structure, low power and high speed, but its disadvantage is that the shafting compensation capacity is general, the weight of the system is heavy, and an intermediate support device needs to be added under high speed conditions.

The composite material shafting has the advantages of light weight and high strength. At present, a small number of ship main propulsion shaftings have replaced the steel shafting in the two arrangements of the steel shafting with composite material shafts, which may require additional intermediate supports. In addition to reducing the weight of the shafting, other corresponding shortcomings are not very obvious.

This patent innovatively proposes a self-supporting elastic high-speed transmission shafting device for the above-mentioned diesel engine-driven main propulsion shafting form. In the case of limited space arrangement, the shafting can have a high working speed, and at the same time, it can adapt to the harsh water surface conditions, and has sufficient axial and radial compensation capabilities.

The utility model patent with the application number of 201910030494.0 discloses a high-speed heavy-duty shafting adjustable over-torque protection structure, including an outer drive shaft, an external bearing seat, an inner drive shaft, an adjustable over-torsion protection pin assembly and an anti-flying pressure plate ;The external drive shaft with internal spline interface structure is connected with the high-speed heavy-duty planetary gearbox; the external bearing seat is connected with the gearbox box, and the external drive shaft is connected with the internal drive shaft through an adjustable over-torque protection pin assembly. The anti-flying pressure plate is connected with the inner drive shaft through bolts. After adopting this structure, by changing the number and structure of the over-torque protection pin assemblies, the safety of the test piece and the supporting tester during the running test can be improved, and the limit load of its safe operation can be obtained. It has the characteristics of high working speed, compact structure, high versatility, fast disassembly, reliability, and effectively avoid the risk of damage to the test piece. However, the above-mentioned patents take up space for layout.

Utility model content

In view of the defects in the prior art, the purpose of the present invention is to provide a self-supporting elastic high-speed transmission shafting device.

A self-supporting elastic high-speed transmission shafting device provided according to the present invention comprises a first transition disc, a carbon fiber double-film disc coupling, a carbon fiber transmission shaft, a second transition disc and a self-supporting high-elasticity coupling, wherein :

The self-supporting high elastic coupling is connected to the prime mover; the first transition plate is connected to the working machine;

The carbon fiber drive shaft and the carbon fiber double diaphragm coupling form a whole;

One end of the carbon fiber double membrane disc coupling is connected with the first transition disc, the other end of the carbon fiber double membrane disc coupling is connected with the second transition disc, and the second transition disc is connected with the self-supporting high-elasticity coupling.

Preferably, the working machine includes a jet pump.

Preferably, the prime mover comprises a diesel engine.

Preferably, the shaft length of the carbon fiber transmission shaft can be adjusted.

Preferably, an adjustment pad is provided between the carbon fiber double-film disc coupling and the second transition disc.

Preferably, the carbon fiber drive shaft is a carbon fiber composite drive shaft.

Preferably, the self-supporting high-elasticity coupling has a self-supporting function.

Compared with the prior art, the utility model has the following beneficial effects:

1. The utility model replaces the traditional high-elasticity coupling with a high-elasticity coupling with a self-supporting function, cancels the intermediate bearing seat, and can reduce the shaft weight and installation space;

2. The utility model replaces the traditional steel shafting with a carbon fiber composite material transmission shaft, and under the premise of ensuring the strength of the shafting, the weight of the shafting is further reduced, and the working speed of the shafting is increased;

3. On the basis of the carbon fiber composite material transmission shaft, the present utility model adopts the carbon fiber double-film disc coupling, which further improves the radial compensation capability of the shaft system and makes up for the axial compensation capability of the shaft system.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

Figure 1 is a structural diagram of a self-supporting elastic high-speed transmission shafting device.

The figure shows:

first transition plate 1

Carbon Fiber Double Diaphragm Coupling 2

carbon fiber driveshaft 3

Second Transition Plate 4

Self-supporting highly elastic coupling 5

Detailed ways

The present utility model will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

As shown in Figure 1, according to the self-supporting elastic high-speed transmission shafting device provided by the present utility model, it consists of a high-elasticity coupling with self-supporting function, a carbon fiber double-film disc coupling, a carbon fiber transmission shaft, a first transition disc and the second transition disc. The self-supporting high-elasticity coupling is connected with the prime mover, such as the diesel engine flywheel, and the first transition disc is connected with the working machine such as the jet pump. A transition disc is connected to the second transition disc. In order to ensure that the shafting length can be adjusted when the shafting is installed on site, a two-half adjustment pad is designed between the carbon fiber diaphragm coupling and the second transition disk.

According to the performance parameters and interface size of the diesel engine and the jet pump, the preliminary selection and scheme design of the self-supporting high-elasticity coupling, the carbon fiber double-diaphragm coupling and the carbon fiber transmission shaft are carried out. The size is matched according to the interface size of the flywheel. In the process of model selection and scheme design, it is necessary to avoid the interference between the highly elastic coupling and the peripheral accessories of the diesel engine.

According to the carbon fiber double membrane disc coupling and jet pump interface designed in the scheme, the first transition disc is preliminarily designed, and the interference with the peripheral accessories of the jet pump should be avoided during the design process. In order to meet the calculation requirements of the shafting torsional vibration and the vibration characteristics of the jet pump, on the premise of ensuring the torque transmission capacity, the weight of the first transition plate should be reduced as much as possible.

According to the design of the carbon fiber double-diaphragm disc coupling and the interface of the self-supporting high-elasticity coupling, the second transition disc is preliminarily designed. On the premise of ensuring the torque transmission capacity, the weight of the second transition disc should be minimized.

In order to ensure the installation and disassembly space of the carbon fiber double diaphragm coupling and the carbon fiber shaft, a two-half adjustment pad is arranged between the second transition disk and the carbon fiber diaphragm coupling.

The length of the carbon fiber composite shaft is determined according to the total length of the shaft system from the end face of the diesel engine flywheel to the end face of the jet pump flange.

On the premise that the shafting meets the design requirements and there is no spatial interference, the weight, center of gravity and moment of inertia of each component of the shafting are calculated, and the calculation of the torsional vibration of the shafting and the calculation of the vibration characteristics of the jet pump are carried out. If the calculation does not meet the requirements, on the premise of ensuring the torque transmission capacity and stiffness, modify the size or material of the two transition discs to reduce their weight and moment of inertia.

The utility model replaces the traditional high-elasticity coupling with a high-elasticity coupling with a self-supporting function, cancels the intermediate bearing seat, and can reduce the shaft weight and installation space; the utility model replaces the traditional steel shafting with The carbon fiber composite material transmission shaft, on the premise of ensuring the strength of the shafting, further reduces the weight of the shafting and increases the working speed of the shafting; on the basis of the carbon fiber composite material transmission shaft, the utility model adopts the carbon fiber double-film disc coupling The shaft device further improves the radial compensation ability of the shafting and makes up for the axial compensation of the shafting.

The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essential content of the present invention. The embodiments of the present application and features in the embodiments may be arbitrarily combined with each other without conflict.

Claims (7)

1. A self-supporting elastic high-speed transmission shafting device is characterized in that, comprising the first transition disc, carbon fiber double-film disc coupling, carbon fiber transmission shaft, the second transition disc and self-supporting high-elasticity coupling, wherein : The self-supporting high elastic coupling is connected to the prime mover; the first transition plate is connected to the working machine; The carbon fiber drive shaft and the carbon fiber double diaphragm coupling form a whole; One end of the carbon fiber double membrane disc coupling is connected with the first transition disc, the other end of the carbon fiber double membrane disc coupling is connected with the second transition disc, and the second transition disc is connected with the self-supporting high-elasticity coupling. 2 . The self-supporting elastic high-speed transmission shafting device according to claim 1 , wherein the working machine comprises a jet pump. 3 . 3. The self-supporting elastic high-speed transmission shafting device of claim 1, wherein the prime mover comprises a diesel engine. 4 . The self-supporting elastic high-speed transmission shafting device according to claim 1 , wherein the shafting length of the carbon fiber transmission shaft can be adjusted. 5 . 5 . The self-supporting elastic high-speed transmission shafting device according to claim 1 , wherein an adjustment pad is arranged between the carbon fiber double-film disc coupling and the second transition disc. 6 . 6 . The self-supporting elastic high-speed transmission shafting device according to claim 1 , wherein the carbon fiber transmission shaft adopts a carbon fiber composite material transmission shaft. 7 . 7 . The self-supporting elastic high-speed transmission shafting device according to claim 1 , wherein the self-supporting high-elasticity coupling has a self-supporting function. 8 .

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