Forward eight-bar linkage working device for loading end of a backhoe loader

摘要

A forward eight-bar linkage working device for the loading end of a backhoe loader comprises a front frame, a movable boom, a rotatable bucket oil cylinder, a movable boom oil cylinder, a rotatable bucket lever, a rotatable bucket pull link, a movable boom pull rod, a movable boom lever and a bucket; and the forward eight-bar linkage mechanism enables a working device of the loading end to achieve a larger breakout force in the case of the same engine power, and makes the axle load distribution ratio of the machine more reasonable, enhancing the operation efficiency and the operation balance.

主权项

1. A forward eight-bar linkage working device for the loading end of a backhoe loader, comprising a front frame, a movable boom, a rotatable bucket oil cylinder, a movable boom oil cylinder, a rotatable bucket lever, a rotatable bucket pull link, a movable boom pull rod, a movable boom lever and a bucket, wherein said frame is hinged with one end of the boom at a point A, hinged with one end of the movable boom pull rod at a point C and hinged with one end of the movable boom oil cylinder at a point E respectively, the other end of said movable boom is hinged with the bucket at a point B, the other end of said movable boom pull rod is hinged with one end of the movable boom lever at a point D, and the other end of said movable boom oil cylinder is hinged at a point F in the middle of the boom; the middle of said movable boom lever is hinged with the movable boom at a point G which is located between the two points A and F; the other end of said movable boom lever is hinged with one end of the rotatable bucket oil cylinder at a point H, the other end of the rotatable bucket oil cylinder is hinged with one end of the rotatable bucket lever at a point I, and the other end of the rotatable bucket lever is hinged with the bucket at a point J; both ends of said rotatable bucket pull link are hinged with the rotatable bucket lever and the movable boom at points K and L respectively, said point K being located between the points I and J, and said point L being located between the points F and B; and the positional relationship among the points of said forward eight-bar linkage mechanism is as follows: taking a reference length as 1, then IK=1, 0.9