Intermediate coupling system for generator and gearbox

Abstract

The invention provides a middle connection system for a power generator and a gear box. The middle connection system is characterized by comprising a base, a coupler, a shackle device, a brake, a barring gear, an electricity transmission device, an upper cover and a lower cover which are installed on a plane base between the gear box and the power generator, and a frame structure is formed in the axial direction of the power generator; a visualization elongation glass fiber pipe and a torsion sensor are pasted to a the coupler, and tiny elongation or torsion motion is generated on the glass fiber pipe and can be displayed on a window preserved on an outer shell of the upper cover; the brake comprises driving pincers and driven pincers and is provided with a friction sheet and a microswitch, and the driving pincers and the driven pincers are pushed in a hydraulic manner to move to generate clamping force; and meanwhile, abrasion changes of the friction sheet can be detected, an alarm signal is output, the middle connection system is used for achieving effective integration on a transmission chain of the power generator, the cost is saved, and the stability and the safety of the system are improved.

Description

technical field [0001] The invention relates to a device for connecting two shafts, in particular to a connecting device for a main shaft of a wind power generator and a shaft sleeve of a gearbox, belonging to the scope of mechanical connecting devices. Background technique [0002] At present, the development of green energy is an important strategic goal of China's sustainable development. Offshore wind power generation has been vigorously promoted. In the transmission chain link of wind power generators, the realization of the connection and assembly functions between the gearbox and the generator is particularly important; the traditional The commissioning and installation is usually that the motor drives the reduction box through a coupling, and the reduction box is connected to a flange through a cross-shaft bidirectional universal coupling, and the flange is connected to the flange of the main shaft of the wind power generating set, so that The entire transmission cha...

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Problems solved by technology

[0002] At present, the development of green energy is an important strategic goal of China's sustainable development. Offshore wind power generation has been vigorously promoted. In the transmission chain link of wind power generators, the realization of the connection and assembly functions between the gearbox and the generator is particularly important; the traditional The commissioning and installation is usually that the motor drives the reduction box through a coupling, and the reduction box is connected to a flange through a cross-shaft bidirectional universal coupling, and the flange is connected to the flange of the main shaft of the wind power generating set, so that The entire transmission chain that drives the unit is driven from the low-speed end of the wind turbine, so the moment of inertia is relatively large and the starting torque is also high, which requires high requirements for the gearbox and generator. , it is also necessary to configure a brake system between the gearbox and the motor, which greatly increases the cost; in terms of its installation, the generator needs to be centered repeatedly, for example, the 4MWSCI generator gearbox is connected to the generator with a coupling, and the generator Installed on a slope, the weight of the generator is 10 tons, and the gravity component F along the slope moves the generator downward. The coupling is a flexible connection, which is not enough to eliminate the gravity G component, so after the generator is aligned, the generator Continuous movement makes the alignment work need to be repeated, not only the system is complicated, but also the operation is extremely inconvenient; therefore, a floating frame is added to solve the problem of repeated alignment of the generator, and the floating frame is connected with the base using an elastic mechanism to realize the floating needs of the gearbox , but under the vibration condition of the long-term operation of the generator, the phenomenon of coupling distortion and cracking often occurs, and the reliability is not high

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