how can I draw this?

2 Answers

That looks pretty complex. Instead of drawing it, can you get a copy of the assembly and all the part files?

If you have to draw this yourself, what reference information do you have? You will need detailed dimensions for each part.

there is a nice tool in Autodesk Inventor-assembly environment, top left of the interface ribbon, select drop down little arrowhead and chose "create layout". that enables you to take a stenciled copy of an orthogonal view (normal to graphic area) of the assembly you have, then you can make it solid later which going to give you the whole assembly as a part (a dummy). in this case you will not need any dimensions or anything, only the assembly file that you want to model and inventor...