1. First, check whether there is a locking device or a brake on the bed. If there is, it needs to be lifted.
2. The push point for finding the bed is generally on the slide rails on both sides of the bed.
3. Add proper lubricant, such as lubricating oil or grease, at the pushing point of the lathe bed to reduce friction.
4. Gently push the bed with your hands. If the bed is too heavy to push, you can try to push it with a push rod or a wooden stick.
If the bed still can't be pushed, you can try to find other help, such as using a crane or forklift.
In short, you need to be careful when pushing the bed to avoid personal injury or equipment damage. If you are not sure how to push the bed, you'd better consult a professional.