| 摘要 |
A coupling arrangement between a trailer and a pulling vehicle wherein the pulling vehicle comprises first coupling plane on which the corresponding second coupling plane of said trailer is placed for obtaining locked coupling, said planes having low friction surfaces allowing said second plane to rotate on said first plane, said planes further being locked to each other by a vertical pin fixed to said second coupling plane wherein the first coupling plane comprises an open groove for said pin to get the locking position in the end of said groove, said coupling arrangement further comprising: a movable locking part fixed to said second plane and being able by means of a spring to move into the groove of said first coupling plane when said planes are rotating in relation to each other, wherein said locking part locating in said groove is locking said planes unrotatable, and for turning the steering wheels of said trailer said second coupling plane is arranged to rotate on said first coupling plane, and by means of turning angle of said second coupling plane or of a vertical axle fixed thereto, the wheels of said trailer is turned.
|
