OPERATING EQUIPMENT OF MECHANICAL SHOVEL Russian patent published in 2000 - IPC

FIELD: earth-moving machinery. SUBSTANCE: operating equipment includes dipper stick, control cylinder whose one end is connected via system of tie-rods by means of ears and hinges with bucket, slewing device with locking members. Slewing device is made in the form of slewing brackets installed on dipper stick. One of slewing brackets is hinged with bucket and tie-rod system connecting control cylinder with bucket, and the other bracket is also hinged with the second control cylinder. For changing face shovel with backhoe or vice versa, it is required to unscrew through several revolutions the locking members located on slewing brackets and turn the latter through 180 dwg round dipper stick axis. In this case, turned together with brackets is control cylinder with system of tie-rods hinged with bucket. After turning of all members through the angle, locking members are screwed until stop. EFFECT: required reliability and productivity of equipment, accelerated change of backhoe with face shovel or vice versa without impairing kinematic parameters of operating equipment. 3 dwg