Like I said, 'bock' has many usages and the actual piece of equipment varies in large and small contexts -- with the Eng term varying accordingly. I would therefore ask that you specify your request into the separate terms you are looking for -- that is, one term per question, as the rules state.

When it comes to heavy lifting, as in a shop handling large machines, and heavy load, I think you are heading in this direction. You can even find 'mobile' trestles. But you really need to give more context.