The utility model provides a novel guide arm
assembly, including first guide arm, the lower part of first guide arm is provided with second guide arm, and one end of first guide arm and second guide arm all is provided with the ear end of rolling, and the ear end of rolling of second guide arm is set in the ear end of rolling of first guide arm outside, forms double -
deck structure, and the ear end of rolling and guide arm whole's structural strength is strengthened through double -
deck structure, and the extension length of one end of first guide arm away from the ear end of rolling is greater than the extension length of one end of second guide arm away from the ear end of rolling to form the stepped guide arm, the utility model discloses the ear end of rolling of first guide arm, second guide arm, and the ear end of rolling of the ear end of rolling set form double -
deck structure, promote the ear end of rolling bending
shear capacity, reduce the risk of deformation fracture, stepped design optimization force transmission, avoid
stress concentration, double -deck structure reduces the thickness of
sheet material under the premise of guaranteeing the strength, realizes light weight, simplifies the process and reduces the cost.