A kind of bridging gear box and its assembly method

Abstract

The invention discloses a bridge gearbox, which comprises a box body part and a first transmission shaft installed on the box body part, two idler shafts and two second transmission shafts, one end of the first transmission shaft is installed with a second A clutch assembly, the first clutch assembly is connected to the steam turbine through a diaphragm coupling, the second flange is installed on one end of the second transmission shaft, and the second flange is connected to the shaft system of the output gearbox through a counter flange, The other end of the second transmission shaft is equipped with a second clutch assembly; the idler shaft on the left is respectively matched with the first transmission shaft and the second transmission shaft on the left, and the idler shaft on the right is respectively connected with the first transmission shaft and the right Drive fit with the second drive shaft on the side, the central axis of the two idler shafts and the central axes of the two second drive shafts are located on the same horizontal plane, and the central axis of the first drive shaft and the central axes of the two idler shafts are in a triangular distribution; The dynamic stability of the shaft system in the technical proposal is very good.

Description

technical field [0001] The invention relates to the technical field of marine gearboxes, in particular to a bridged gearbox and an assembly method thereof. Background technique [0002] The propulsion system is an important system of a ship that enables the ship to have the specified maneuverability. [0003] Due to the large speed span and many operating conditions of the ship, the design and operation modes of the propulsion system are diverse; the multi-working condition requirements of the propulsion system determine the complex composition of the propulsion system, and many factors need to be considered in the design, such as speed, displacement and economy. Wait. [0004] After years of development, the ship propulsion system has gradually formed a variety of forms, and the propulsion method has also developed from a single-shaft single machine to a single-shaft double machine, and a double-shaft single machine. Classification of power devices, power devices mainly i...

AI Technical Summary

Problems solved by technology

[0007] However, when the steam turbine is used as power to drive the propeller to rotate, the rotational speed is at least 3000r / min, that is, the shafting speed in the bridging gearbox is high at this time, and the shafting in the bridging gearbox is susceptible to external interference, especially the bridging gear box. The intermediate transmission shaft connected to the gearbox is more likely to lose stability when it is disturbed by the outside world. This is because the force on the sliding bearing of the intermediate transmission shaft connected to the gearbox is as follows: figure 1 As shown, in addition to its own gravity G, the resultant force F of the other forces 合 is zero, that is, the force on the sliding bearing itself is small, so that under the high-speed rotation of the bridging gearbox shaft system, the sliding bearing is very easy to be unstable due to external interference, which is not good for the high-speed navigation of the ship;

[0008] To sum up, in the existing propulsion forms that use diesel engines, gas turbines and diesel engines alternately, when the steam turbine is used as power to propel the ship forward at high speed, the force on the pinion and sliding bearing on the intermediate transmission shaft is unreasonable, that is, The shafting stability of the existing spanning gearbox is poor

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