depends on different environment and different policy in different countries ,we do have different types of gate design for feed trailers .
how many types of gates in general?
in general we have three types which are very popular in china , opening type / manual slide gate / cylinder control Slide gate .pls kindly check the photos below .
Manual Opening and Closing gate
but in some market if the wind is very strong , the gate can’t stand
strong wind will close the gate easily .
Opening and closing by cylinder
in china ,we have policy in some provinces that operator cannot go to the top the feed bulker for biosecurity . but disadvantage is one more maintainance point .
Manuall Slide Types Gate
which will avoid the issue of strong wind , but people also should go up , it is popular in middle east .
in general , now the third types of gate are more and more popular .thanks ~