What is the mechanical structure of an electric locomotive?​

What is the mechanical structure of an electric locomotive?

1、 Mechanical structure of electric locomotive

The mechanical part of electric locomotive includes frame, wheel set, bearing and bearing box, spring bracket, braking device, gear transmission device
Connect the buffer device, sanding device and air compression system.
（1） Frame
The frame is the body component of the electric locomotive. The structural form is generally plate type and steel frame type, which is composed of side plate, diaphragm, end plate and bottom plate
Yes. Since all mechanical and electrical equipment on the electric locomotive are installed on the frame, the frame also bears the package during operation
The weight of the equipment to be installed, including the frame, and the effects of traction, braking force, impact force and some additional forces
The strength of the frame should be large enough. Generally, the frame of electric locomotive is made of 20mm ~ 50mm thick steel according to different models and positions
Plate welded.
（2） Wheelset
The wheel set is composed of two wheels pressed on a shaft. Since the wheel set not only bears the full weight of the electric locomotive, the electric locomotive
The traction and braking force shall be generated by the wheel set acting on the track, and in operation, the wheel set also directly bears the track joint and turnout
And the impact force caused by the uneven line. When crossing the curve, it is also affected by centrifugal force. Therefore, the working conditions of wheel sets are extremely poor.
The axle is forged with high-quality axle steel and processed. The wheel is assembled by hot pressing of wheel center and wheel hoop, and the wheel center is made of cast iron or cast steel
Material: the tyre is rolled with high-quality steel. When the tire is worn, it can be replaced without scrapping the whole wheel set. In some small electric
The locomotive also has integral wheels.
（3） Bearings and bearing housings
Both ends of the axle of the electric locomotive are installed in the bearing box, which is the connection point between the frame and the wheel set. The most common stop is shown in the figure
For the bearing box of push roller bearing, the Journal of wheel set is sleeved in the inner race of bearing, and felt pad is used to prevent coal dust from invading people and lubricating oil
Throw it out. A hole seat for installing the spring bracket is arranged on the bearing box, and the chute on both sides of the box shell is matched with the frame
When driving on an uneven track, the axle can slide up and down on the frame, which acts as a buffer through the spring bracket.