F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
138/87.1, 138/80
F15B 21/00 (2006.01)
Patent
CA 1045512
Abstract of the Disclosure A motor grader includes a blade support frame in the form of a drawbar located beneath and having its forward end univer- ually pivotally connected to an arched beam forming a fore-and- aft extending main frame section of the grader. The drawbar is further connected to the arched beam through means of a suspen- sion and control linkage including a pair of bell cranks pivotally connected at opposite sides of the beam for movement about re- spective fore-and-aft axes. A transverse bar extends beneath the beam and has opposite ends thereof respectively pivotally connect- ed to respective first arms of the bell cranks. A pair of two- way hydraulic lift actuators respectively have first ends pivotal- ly connected to respective second arms of the bell crank and re- spectively have second ends pivotally connected to opposite side of the drawbar. A side-shift actuator extends beneath the beams and has its opposite ends respectively pivotally connected to one side of the drawbar and the bell crank which is the most remote therefrom. A hydraulically operable locking pin is fixed to the beam adjacent the transverse bar and the latter is provided along its length with a plurality of holes for selective reception of the locking pin to fix the blade support frame in a desired posi- tion. For the same purpose, further holes are located in the bell cranks. Provision is made for pressure engagement and dis- engagement of the locking pin.
236784
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