초록 ▼

A support assembly supporting a spray boom assembly from a liquid supply assembly. Spaced support arms have opposite ends pivotably mounted on frames of the liquid supply assembly and the boom assembly to afford movement of the spray boom assembly between raised and lowered positions by a changeable

A support assembly supporting a spray boom assembly from a liquid supply assembly. Spaced support arms have opposite ends pivotably mounted on frames of the liquid supply assembly and the boom assembly to afford movement of the spray boom assembly between raised and lowered positions by a changeable length assembly such as a hydraulic piston, and shocks or bouncing action transmitted from the liquid supply assembly are damped by an assembly comprising an elongate shaft, an elongate tube around the shaft, resiliently elastic shock absorbing strips disposed between the shaft and the tube that with surfaces of the shaft and tube are shaped to restrict rotation of the tube around the shaft without resilient compression of the shock absorbing strips. Either the shaft or tube is fixed to the frame or the support arms, the other has an activating arm fixed to and projecting from it, which activating arm is pivotably attached to one end of the changeable length means. Thus, a shock or bouncing action at the liquid supply assembly will be effectively damped by relative rotation between the shaft and the tube and resultant resilient compression of the shock absorbing strips.

대표청구항 ▼

[ What is claimed is:] [1.] A support assembly adapted for use on a field sprayer to support a spray boom assembly from a liquid supply assembly, said support assembly comprising:a plurality of horizontally and vertically spaced support arms each having opposite supported and supporting ends, said s

[ What is claimed is:] [1.] A support assembly adapted for use on a field sprayer to support a spray boom assembly from a liquid supply assembly, said support assembly comprising:a plurality of horizontally and vertically spaced support arms each having opposite supported and supporting ends, said supported ends of said support arms being adapted to be mounted on a frame of said liquid supply assembly and said supporting ends of said support arms being adapted to be mounted on a frame of said spray boom assembly for pivotal movement of said ends about generally parallel axes to afford movement of said frame of the spray boom assembly between a raised position with said support arms extending generally upwardly from the frame of said liquid supply assembly to the frame of said spray boom assembly, and lowered positions with said arms extending generally horizontally or downwardly from the frame of said liquid supply assembly to the frame of said spray boom assembly; andsupport means for positioning the frame of said spray boom assembly at any position between said raised and lowered positions and for damping shocks or bouncing action transmitted between said frames, said support means comprisinga changeable length assembly having first and second opposite ends, and means between said first and second ends for changing the length of said changeable length assembly, andshock absorbing means comprising:an elongate shaft member having an axis,an elongate tube member having an axis and an axially extending through opening, said tube member being positioned around said shaft member with the axes of said shaft and tube members being generally parallel,elongate resiliently elastic shock absorbing strips disposed between said shaft and said tube, adjacent surfaces of said strips and said shaft and tube members being shaped to restrict rotation of said collar around said shaft without compression of said shock absorbing strips,at least one activating arm having opposite inner and outer ends, said inner end of said arm being fixed to one of said shaft and tube members, said activating arm extending generally radially of the axes of said shaft and tube members, and the outer end of said activating arm being pivotably attached to the second end of said changeable length assembly,one of said first end of said changeable length means and said member other than the member to which said arm is attached being adapted to be attached to one of said frames, and at least one of said support arms being attached to the other of said first end and said member other than the member to which said arm is attached, said first end of said changeable length means being pivotably attached and said member being fixedly attached.