(1) In order to enhance the rigidity of the connection between the main beam and the end beam, sometimes a steel plate (or large angle steel) is welded on the head and end beam of the main beam by a unit, which causes the end beam to bend outward.
(2) If the cart gnaws the rail severely, the end beam will also be deformed under the action of lateral force.
(3) Due to the deflection and deformation of the main beam in use, the end beam will also be deformed.