초록 ▼

A transfer gear assembly includes a transfer gear rotatably supported directly by a tapered roller bearing and thrust bearing. A tapered snap ring is positioned in a circumferential groove on a hub to provide a preload on the tapered roller bearing and thrust bearing. The tapered roller bearing and

A transfer gear assembly includes a transfer gear rotatably supported directly by a tapered roller bearing and thrust bearing. A tapered snap ring is positioned in a circumferential groove on a hub to provide a preload on the tapered roller bearing and thrust bearing. The tapered roller bearing and thrust bearing each may include only a single race.

대표청구항 ▼

A transfer gear assembly includes a transfer gear rotatably supported directly by a tapered roller bearing and thrust bearing. A tapered snap ring is positioned in a circumferential groove on a hub to provide a preload on the tapered roller bearing and thrust bearing. The tapered roller bearing and

A transfer gear assembly includes a transfer gear rotatably supported directly by a tapered roller bearing and thrust bearing. A tapered snap ring is positioned in a circumferential groove on a hub to provide a preload on the tapered roller bearing and thrust bearing. The tapered roller bearing and thrust bearing each may include only a single race. ving upper and lower surfaces mounted on the upper surface adjacent the inboard end of said second sickle bar and extending away therefrom over the inboard portion of the upper surface of said first sickle bar in transverse alignment with both said first and second sickle bars; knife elements mounted on the lower surface of said knife back extension and co-operable with a plurality of said knife guards for cutting crop material, the knife elements being mounted on said knife back extension in transverse alignment such that said knife back extension and said second knife back sandwich a plurality of knife elements where they overlap; the relative lengths of said first and second sickle bars being such that said knife back extension is always in an overlap position relative to the said inboard end of said first sickle bar; a drive mechanism on said frame structure for providing oscillatory motion; and mechanical connection apparatus connecting said drive mechanism to each outboard end of said sickle bars for transferring oscillatory motion thereto to cause reciprocation thereof. 2. The mowing device of claim 1 wherein: each said sickle guard has at least one elongate finger-like member extending forwardly and having a first generally planar upwardly facing surface; an elongate knife back; said first and second knife backs and said knife back extension adapted to reciprocate along the length of said plurality of sickle guards such that said knife elements register with said first surfaces to cut crop material; a plurality of elongate finger-like hold-downs, one of said finger-like hold-downs associated with each said finger-like member and having a second generally planar downwardly facing surface, said first and second surfaces forming a slot between each sickle guard and respective hold-down in which said knife elements reciprocate; each said finger-like hold-down having a forward generally pointed end and an opposing rearward end, said rearward end being rigidly affixed to said flange at a point adjacent said rearward end of said hold-down; each said hold-down further having a reduced transverse cross-sectional area adjacent and forwardly of said point at which said hold-down is rigidly affixed to said frame; an adjustment mechanism interconnecting said flange and said hold-down, at a point forward of said reduced transverse cross-sectional area, to flex said hold-down about said reduced transverse cross-sectional area to modify the spacing between said second surface and said knife element. 3. The mowing device of claim 2, wherein: said hold-down has a first vertical hole therethrough adjacent said rearward end thereof and rigidly affixed to said forward end of said frame by a first bolt. 4. The mowing device of claim 3, wherein: said hold-down includes a second hole therethrough adjacent to and forward of said reduced transverse cross-sectional area; and said adjustment mechanism includes a second bolt through said second hole to modify the spacing between said second surface and said knife element. 5. The mowing device of claim 4, wherein: said second bolt interconnects said hold-down and said frame. 6. The mowing device of claim 5, wherein: said hold-own is a forging. 7. The mowing device of claim 6, wherein: said finger-like member extends forwardly beyond said hold-down. 8. The mowing device of claim 1 wherein: said knife elements are angled forwardly converging cutting edges, each said cutting edge intersecting with a cutting edge on the adjacent element at a rearward vertex and registering with said cutting edges of said sickle guards as said first and second sickle bars reciprocate, a plurality of hold-downs, one associated with each finger portion of each sickle guard, each said hold-down comprising: an elongate body having a finger-like tapered front portion, and an opposing generally rectangular box-like rear portion with a width, a top surface and an opposing bottom