Road grader attachment for a skid steer

Abstract

In accordance with the present disclosure, a motor grader attachment for a skid steer work machine is disclosed. The attachment may comprise of a chassis, a plurality of traction devices, a motor grade circle, a grader blade, an articulation joint, and an attachment hydraulic control valve coupled to the chassis. The motor grade circle may be coupled to the chassis and positioned between the front traction device and the work machine. The grader blade may coupled to the motor grade circle for rotation about a blade axis. The articulation joint to the chassis at a rear end of chassis may permit pivotal articulation of the chassis about the ball joint at the rearward end relative to a skid steer frame. The attachment hydraulic control valve may be coupled to the chassis, and meter flow of hydraulic fluid from an auxiliary port located on the skid steer to the hydraulic circuit.

What is claimed is: 
     
         1 . A motor grader attachment for a skid steer work machine, the attachment comprising:
 a chassis;   a plurality of traction devices positioned to support the chassis and including at least one front traction device;   a motor grade circle coupled to the chassis and positioned between the front traction device and the work machine;   a grader blade coupled to the motor grade circle for rotation about a blade axis;   an articulation joint coupled to the chassis at a rear end of chassis, permitting pivotal articulation of the chassis about the ball joint at the rearward end relative to a skid steer frame; and   an attachment hydraulic control valve coupled to the chassis, metering a flow of hydraulic fluid from an auxiliary port located on the skid steer to a hydraulic circuit for driving movement of a plurality of actuators coupled to the chassis.   
     
     
         2 . The attachment of  claim 1 , wherein the plurality of actuators comprises:
 at least one steering actuator, the steering actuator coupled to the front traction device, enabling steerability of the front traction device.   
     
     
         3 . The attachment of  claim 1 , wherein the plurality of actuators comprises:
 at least one lift actuator, the lift actuator coupled to the blade, enabling a lift of the blade.   
     
     
         4 . The attachment of  claim 1 , wherein the plurality of actuators comprises:
 at least one side shift, the side shift actuator coupled to the blade, enabling side shifting of the blade.   
     
     
         5 . The attachment of  claim 1 , wherein the plurality of actuators comprises:
 at least one blade pitch actuator coupled to the blade, enabling pitching of the blade.   
     
     
         6 . The attachment of  claim 1 , wherein the plurality of actuators comprises:
 at least one circle rotate actuator, the circle rotate actuator enabling the motor grade circle to turn about a motor grade circle axis.   
     
     
         7 . The attachment of  claim 1 , wherein the plurality of actuators comprises:
 at least one wheel lean actuator enabling the front traction device to lean.   
     
     
         8 . A skid steer work machine including an auxiliary port, the work machine comprising:
 a skid steer frame;   a boom assembly;   a chassis including:   a plurality of traction devices positioned to support the chassis and including at least one front traction device;   a motor grade circle coupled to the chassis and positioned between the front traction device and the skid steer frame;   a grader blade coupled to the motor grade circle for rotation about a blade axis;   an articulation joint coupled to the chassis at a rear end of chassis, permitting pivotal articulation of the chassis about the ball joint at the rearward end relative to the skid steer frame;   an attachment hydraulic control valve coupled to the chassis, metering flow of hydraulic fluid from the auxiliary port located on the skid steer to a hydraulic circuit for driving movement of a plurality of actuators coupled to the chassis.   
     
     
         9 . The work machine of  claim 8 , wherein the plurality of actuators comprises:
 at least one steering actuator, the steering actuator coupled to the front traction device, enabling steerability of the front traction device.   
     
     
         10 . The work machine of  claim 8 , wherein the plurality of actuators comprises:
 at least one lift actuator, the lift actuator coupled to the blade, enabling a lift of the blade.   
     
     
         11 . The work machine of  claim 8 , wherein the plurality of actuators comprises:
 at least one side shift, the side shift actuator coupled to the blade, enabling side shifting of the blade.   
     
     
         12 . The work machine of  claim 8 , wherein the plurality of actuators comprises:
 at least one blade pitch actuator, coupled to the blade, enabling pitching of the blade.   
     
     
         13 . The work machine of  claim 8 , wherein the plurality of actuators comprises:
 at least one circle rotate actuator, the circle rotate actuator enabling the motor grade circle to turn about a motor grade circle axis.   
     
     
         14 . The work machine of  claim 8 , wherein the plurality of actuators comprises:
 at least one wheel lean actuator enabling the front traction device to lean.