I find keeping a strict schedule helps the dog settle in, it does take a few days though.
Dogs follow patterns, so make a ritual and follow it each time for crating. My ritual for crating the dogs is, get a treat and divide it into two, call the dog over and toss one of the treats into the crate. When the dog goes into the crate then they get the second treat, a quick pat, the door gets closed and it's time to leave. No fuss, just a "see you later." Now when the dogs hear me get a treat and I start heading for the crates they beat me there and wait inside the crate for their treats, so it's a good thing to go into the crate. You can use a stuffed kong to keep them focused on that for a good 30 minutes and by the time they're finished they should hopefully be relaxed enough to sleep
Playing quiet music like classical or even talk shows to give the dogs something soothing to listen to can help.
If the dog really hates the crate then work on it slowly (as much as time allows) where the dog is crated for 5 minutes and treated regularly if they're quiet, then push to 10 minutes. Eventually leaving the room for short periods of times and coming back and treating the quiet then leaving again.
Also, make sure the dog is good and tired before crating. Make sure they have plenty of exercise and a good potty break before putting them away, so they're more likely to relax and rest.
Jasmine - Female Miniature Poodle - born Aug 15, 2010
Loker Delgado Von Stalworth - Male GSD - born Jan 26, 2012
Koda & Zazu - 5 year old male cats
Alex - Male Cocker Spaniel (rescue) - RIP Cuddlebug 2007-2010