All this trains (22133,17308,16536) are basically for Karnataka people for going to there capital city Banglore.
For Solapur, Mumbai is a capital and only one dedicated train (12116) is running on this route, others comming from south are of no use as they are full from south itself.
Passengers from Solapur is demanding more trains towards Pune, Mumbai, Kolhapur and Nagpur(No direct train until except slip coach) for connecting Maharashtra and the result is every year one new train started towards Banglore.